./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 735b3cc8 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/39_rand_lock_p0_vs-b.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 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:19:42,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:19:42,381 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-14 01:19:42,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:19:42,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:19:42,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:19:42,407 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:19:42,407 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:19:42,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:19:42,409 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:19:42,409 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:19:42,409 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:19:42,410 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:19:42,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:19:42,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:19:42,411 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 -> 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 [2025-03-14 01:19:42,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:19:42,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:19:42,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:19:42,627 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:19:42,627 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:19:42,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2025-03-14 01:19:43,788 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/386ae7dfe/6323b1d0be024f2daca7fe35124741be/FLAG9577f9426 [2025-03-14 01:19:44,058 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:19:44,058 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2025-03-14 01:19:44,067 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/386ae7dfe/6323b1d0be024f2daca7fe35124741be/FLAG9577f9426 [2025-03-14 01:19:44,351 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/386ae7dfe/6323b1d0be024f2daca7fe35124741be [2025-03-14 01:19:44,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:19:44,354 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:19:44,355 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:19:44,356 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:19:44,360 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:19:44,361 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7334861a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44, skipping insertion in model container [2025-03-14 01:19:44,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,390 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:19:44,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:19:44,575 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:19:44,616 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:19:44,646 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:19:44,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44 WrapperNode [2025-03-14 01:19:44,647 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:19:44,648 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:19:44,648 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:19:44,648 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:19:44,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,681 INFO L138 Inliner]: procedures = 171, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 86 [2025-03-14 01:19:44,683 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:19:44,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:19:44,684 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:19:44,684 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:19:44,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,697 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,698 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:19:44,701 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:19:44,702 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:19:44,702 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:19:44,702 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (1/1) ... [2025-03-14 01:19:44,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:19:44,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:19:44,725 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) [2025-03-14 01:19:44,727 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 [2025-03-14 01:19:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-14 01:19:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-14 01:19:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:19:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-14 01:19:44,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:19:44,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:19:44,743 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:19:44,823 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:19:44,825 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:19:45,005 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:19:45,006 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:19:45,006 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:19:45,066 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:19:45,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:19:45 BoogieIcfgContainer [2025-03-14 01:19:45,067 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:19:45,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:19:45,069 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:19:45,072 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:19:45,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:19:44" (1/3) ... [2025-03-14 01:19:45,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477f97dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:19:45, skipping insertion in model container [2025-03-14 01:19:45,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:19:44" (2/3) ... [2025-03-14 01:19:45,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477f97dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:19:45, skipping insertion in model container [2025-03-14 01:19:45,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:19:45" (3/3) ... [2025-03-14 01:19:45,074 INFO L128 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs-b.i [2025-03-14 01:19:45,086 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:19:45,087 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 39_rand_lock_p0_vs-b.i that has 2 procedures, 77 locations, 1 initial locations, 2 loop locations, and 7 error locations. [2025-03-14 01:19:45,088 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:19:45,142 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:45,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 81 transitions, 166 flow [2025-03-14 01:19:45,198 INFO L124 PetriNetUnfolderBase]: 4/88 cut-off events. [2025-03-14 01:19:45,200 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:19:45,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 88 events. 4/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2025-03-14 01:19:45,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 81 transitions, 166 flow [2025-03-14 01:19:45,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 81 transitions, 166 flow [2025-03-14 01:19:45,214 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:45,222 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;@7f83e333, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:45,223 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-03-14 01:19:45,235 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:45,237 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2025-03-14 01:19:45,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:19:45,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:45,238 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:45,239 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2025-03-14 01:19:45,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:45,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1473880547, now seen corresponding path program 1 times [2025-03-14 01:19:45,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645942004] [2025-03-14 01:19:45,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:45,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:45,306 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-14 01:19:45,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:19:45,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:45,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:45,317 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:45,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-14 01:19:45,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-14 01:19:45,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:45,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:45,346 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:45,348 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:45,349 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2025-03-14 01:19:45,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2025-03-14 01:19:45,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2025-03-14 01:19:45,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2025-03-14 01:19:45,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2025-03-14 01:19:45,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2025-03-14 01:19:45,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2025-03-14 01:19:45,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2025-03-14 01:19:45,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2025-03-14 01:19:45,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2025-03-14 01:19:45,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2025-03-14 01:19:45,352 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2025-03-14 01:19:45,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2025-03-14 01:19:45,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2025-03-14 01:19:45,353 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2025-03-14 01:19:45,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:19:45,354 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-14 01:19:45,356 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:45,356 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-14 01:19:45,392 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:45,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 141 transitions, 292 flow [2025-03-14 01:19:45,448 INFO L124 PetriNetUnfolderBase]: 8/157 cut-off events. [2025-03-14 01:19:45,448 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 01:19:45,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 157 events. 8/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 312 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 127. Up to 3 conditions per place. [2025-03-14 01:19:45,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 141 transitions, 292 flow [2025-03-14 01:19:45,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 141 transitions, 292 flow [2025-03-14 01:19:45,455 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:45,457 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;@7f83e333, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:45,457 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-14 01:19:45,466 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:45,469 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2025-03-14 01:19:45,469 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-14 01:19:45,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:45,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:45,469 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-14 01:19:45,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1715879003, now seen corresponding path program 1 times [2025-03-14 01:19:45,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:45,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070334073] [2025-03-14 01:19:45,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:45,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:45,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:19:45,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:19:45,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:45,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:19:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:19:45,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:19:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070334073] [2025-03-14 01:19:45,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070334073] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:19:45,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:19:45,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:19:45,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149120845] [2025-03-14 01:19:45,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:19:45,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:19:45,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:19:45,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:19:45,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:19:45,614 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 141 [2025-03-14 01:19:45,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 141 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:19:45,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:19:45,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 141 [2025-03-14 01:19:45,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:19:45,751 INFO L124 PetriNetUnfolderBase]: 83/697 cut-off events. [2025-03-14 01:19:45,751 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-14 01:19:45,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 697 events. 83/697 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3886 event pairs, 30 based on Foata normal form. 158/798 useless extension candidates. Maximal degree in co-relation 642. Up to 112 conditions per place. [2025-03-14 01:19:45,758 INFO L140 encePairwiseOnDemand]: 112/141 looper letters, 25 selfloop transitions, 10 changer transitions 0/134 dead transitions. [2025-03-14 01:19:45,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 134 transitions, 353 flow [2025-03-14 01:19:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:19:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:19:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2025-03-14 01:19:45,769 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.900709219858156 [2025-03-14 01:19:45,770 INFO L175 Difference]: Start difference. First operand has 138 places, 141 transitions, 292 flow. Second operand 3 states and 381 transitions. [2025-03-14 01:19:45,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 134 transitions, 353 flow [2025-03-14 01:19:45,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 134 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-14 01:19:45,781 INFO L231 Difference]: Finished difference. Result has 126 places, 129 transitions, 336 flow [2025-03-14 01:19:45,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=126, PETRI_TRANSITIONS=129} [2025-03-14 01:19:45,786 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, -12 predicate places. [2025-03-14 01:19:45,786 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 129 transitions, 336 flow [2025-03-14 01:19:45,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:19:45,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:45,787 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:45,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:19:45,790 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-14 01:19:45,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1221591890, now seen corresponding path program 1 times [2025-03-14 01:19:45,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:45,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010400527] [2025-03-14 01:19:45,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:45,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:45,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:19:45,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:19:45,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:45,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:45,814 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:45,816 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-14 01:19:45,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-14 01:19:45,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:45,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:45,832 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:45,832 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:45,832 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2025-03-14 01:19:45,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2025-03-14 01:19:45,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2025-03-14 01:19:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2025-03-14 01:19:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2025-03-14 01:19:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2025-03-14 01:19:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2025-03-14 01:19:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2025-03-14 01:19:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2025-03-14 01:19:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2025-03-14 01:19:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2025-03-14 01:19:45,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2025-03-14 01:19:45,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2025-03-14 01:19:45,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2025-03-14 01:19:45,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2025-03-14 01:19:45,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2025-03-14 01:19:45,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2025-03-14 01:19:45,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2025-03-14 01:19:45,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2025-03-14 01:19:45,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2025-03-14 01:19:45,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2025-03-14 01:19:45,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2025-03-14 01:19:45,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 01:19:45,837 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-14 01:19:45,838 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:45,838 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-14 01:19:45,873 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:45,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 201 transitions, 420 flow [2025-03-14 01:19:45,921 INFO L124 PetriNetUnfolderBase]: 12/226 cut-off events. [2025-03-14 01:19:45,921 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-14 01:19:45,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 226 events. 12/226 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 625 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 186. Up to 4 conditions per place. [2025-03-14 01:19:45,923 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 201 transitions, 420 flow [2025-03-14 01:19:45,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 201 transitions, 420 flow [2025-03-14 01:19:45,925 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:45,926 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;@7f83e333, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:45,926 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-14 01:19:45,929 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:45,929 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2025-03-14 01:19:45,929 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-14 01:19:45,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:45,930 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:45,930 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-14 01:19:45,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2005518665, now seen corresponding path program 1 times [2025-03-14 01:19:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:45,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232940417] [2025-03-14 01:19:45,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:45,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:19:45,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:19:45,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:45,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:19:45,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:19:45,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:19:45,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232940417] [2025-03-14 01:19:45,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232940417] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:19:45,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:19:45,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:19:45,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495422060] [2025-03-14 01:19:45,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:19:45,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:19:45,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:19:45,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:19:45,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:19:46,018 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 201 [2025-03-14 01:19:46,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 201 transitions, 420 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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) [2025-03-14 01:19:46,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:19:46,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 201 [2025-03-14 01:19:46,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:19:47,009 INFO L124 PetriNetUnfolderBase]: 1850/8283 cut-off events. [2025-03-14 01:19:47,010 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2025-03-14 01:19:47,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11581 conditions, 8283 events. 1850/8283 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 88823 event pairs, 737 based on Foata normal form. 2158/9599 useless extension candidates. Maximal degree in co-relation 7207. Up to 1856 conditions per place. [2025-03-14 01:19:47,091 INFO L140 encePairwiseOnDemand]: 158/201 looper letters, 38 selfloop transitions, 15 changer transitions 0/193 dead transitions. [2025-03-14 01:19:47,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 193 transitions, 522 flow [2025-03-14 01:19:47,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:19:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:19:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2025-03-14 01:19:47,096 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8971807628524047 [2025-03-14 01:19:47,096 INFO L175 Difference]: Start difference. First operand has 196 places, 201 transitions, 420 flow. Second operand 3 states and 541 transitions. [2025-03-14 01:19:47,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 193 transitions, 522 flow [2025-03-14 01:19:47,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 193 transitions, 518 flow, removed 2 selfloop flow, removed 0 redundant places. [2025-03-14 01:19:47,103 INFO L231 Difference]: Finished difference. Result has 178 places, 185 transitions, 488 flow [2025-03-14 01:19:47,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=488, PETRI_PLACES=178, PETRI_TRANSITIONS=185} [2025-03-14 01:19:47,105 INFO L279 CegarLoopForPetriNet]: 196 programPoint places, -18 predicate places. [2025-03-14 01:19:47,105 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 185 transitions, 488 flow [2025-03-14 01:19:47,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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) [2025-03-14 01:19:47,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:47,106 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] [2025-03-14 01:19:47,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 01:19:47,106 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-14 01:19:47,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:47,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1229918828, now seen corresponding path program 1 times [2025-03-14 01:19:47,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:47,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678972550] [2025-03-14 01:19:47,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:47,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:47,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-14 01:19:47,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-14 01:19:47,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:47,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:47,134 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:47,136 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-14 01:19:47,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-14 01:19:47,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:47,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:47,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:47,154 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:47,154 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-03-14 01:19:47,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2025-03-14 01:19:47,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2025-03-14 01:19:47,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2025-03-14 01:19:47,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2025-03-14 01:19:47,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2025-03-14 01:19:47,154 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2025-03-14 01:19:47,155 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2025-03-14 01:19:47,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2025-03-14 01:19:47,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2025-03-14 01:19:47,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2025-03-14 01:19:47,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2025-03-14 01:19:47,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2025-03-14 01:19:47,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2025-03-14 01:19:47,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2025-03-14 01:19:47,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2025-03-14 01:19:47,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2025-03-14 01:19:47,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2025-03-14 01:19:47,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-14 01:19:47,157 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-14 01:19:47,157 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:47,157 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-14 01:19:47,195 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:47,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 261 transitions, 550 flow [2025-03-14 01:19:47,275 INFO L124 PetriNetUnfolderBase]: 16/295 cut-off events. [2025-03-14 01:19:47,275 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-14 01:19:47,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 295 events. 16/295 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 984 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 245. Up to 5 conditions per place. [2025-03-14 01:19:47,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 261 transitions, 550 flow [2025-03-14 01:19:47,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 261 transitions, 550 flow [2025-03-14 01:19:47,280 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:47,280 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;@7f83e333, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:47,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2025-03-14 01:19:47,282 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:47,283 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2025-03-14 01:19:47,283 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-14 01:19:47,283 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:47,283 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:47,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-14 01:19:47,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:47,283 INFO L85 PathProgramCache]: Analyzing trace with hash -681903575, now seen corresponding path program 1 times [2025-03-14 01:19:47,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:47,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22444440] [2025-03-14 01:19:47,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:47,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:47,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:19:47,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:19:47,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:47,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:19:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:19:47,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:19:47,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22444440] [2025-03-14 01:19:47,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22444440] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:19:47,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:19:47,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:19:47,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948443678] [2025-03-14 01:19:47,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:19:47,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:19:47,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:19:47,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:19:47,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:19:47,348 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 261 [2025-03-14 01:19:47,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 261 transitions, 550 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2025-03-14 01:19:47,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:19:47,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 261 [2025-03-14 01:19:47,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:19:56,249 INFO L124 PetriNetUnfolderBase]: 31456/99417 cut-off events. [2025-03-14 01:19:56,249 INFO L125 PetriNetUnfolderBase]: For 11679/11679 co-relation queries the response was YES. [2025-03-14 01:19:56,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148900 conditions, 99417 events. 31456/99417 cut-off events. For 11679/11679 co-relation queries the response was YES. Maximal size of possible extension queue 3033. Compared 1437860 event pairs, 13027 based on Foata normal form. 28296/116477 useless extension candidates. Maximal degree in co-relation 87110. Up to 27457 conditions per place. [2025-03-14 01:19:57,364 INFO L140 encePairwiseOnDemand]: 204/261 looper letters, 51 selfloop transitions, 20 changer transitions 0/252 dead transitions. [2025-03-14 01:19:57,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 252 transitions, 695 flow [2025-03-14 01:19:57,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:19:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:19:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2025-03-14 01:19:57,367 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8952745849297573 [2025-03-14 01:19:57,367 INFO L175 Difference]: Start difference. First operand has 254 places, 261 transitions, 550 flow. Second operand 3 states and 701 transitions. [2025-03-14 01:19:57,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 252 transitions, 695 flow [2025-03-14 01:19:57,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 252 transitions, 683 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-14 01:19:57,377 INFO L231 Difference]: Finished difference. Result has 230 places, 241 transitions, 640 flow [2025-03-14 01:19:57,378 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=640, PETRI_PLACES=230, PETRI_TRANSITIONS=241} [2025-03-14 01:19:57,378 INFO L279 CegarLoopForPetriNet]: 254 programPoint places, -24 predicate places. [2025-03-14 01:19:57,378 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 241 transitions, 640 flow [2025-03-14 01:19:57,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2025-03-14 01:19:57,379 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:57,379 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] [2025-03-14 01:19:57,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-14 01:19:57,379 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-14 01:19:57,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash 415377949, now seen corresponding path program 1 times [2025-03-14 01:19:57,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:57,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916777117] [2025-03-14 01:19:57,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:57,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:57,389 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-14 01:19:57,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-14 01:19:57,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:57,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:57,395 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:19:57,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-14 01:19:57,401 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-14 01:19:57,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:57,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:19:57,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:19:57,414 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:19:57,414 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2025-03-14 01:19:57,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2025-03-14 01:19:57,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2025-03-14 01:19:57,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2025-03-14 01:19:57,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2025-03-14 01:19:57,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2025-03-14 01:19:57,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2025-03-14 01:19:57,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2025-03-14 01:19:57,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2025-03-14 01:19:57,416 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2025-03-14 01:19:57,417 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2025-03-14 01:19:57,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2025-03-14 01:19:57,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2025-03-14 01:19:57,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2025-03-14 01:19:57,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2025-03-14 01:19:57,418 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2025-03-14 01:19:57,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-14 01:19:57,418 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-14 01:19:57,419 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:19:57,419 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-14 01:19:57,462 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:19:57,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 321 transitions, 682 flow [2025-03-14 01:19:57,677 INFO L124 PetriNetUnfolderBase]: 20/364 cut-off events. [2025-03-14 01:19:57,678 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-14 01:19:57,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 364 events. 20/364 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1365 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 308. Up to 6 conditions per place. [2025-03-14 01:19:57,681 INFO L82 GeneralOperation]: Start removeDead. Operand has 312 places, 321 transitions, 682 flow [2025-03-14 01:19:57,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 321 transitions, 682 flow [2025-03-14 01:19:57,688 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:19:57,688 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;@7f83e333, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:19:57,688 INFO L334 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2025-03-14 01:19:57,691 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:19:57,691 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2025-03-14 01:19:57,691 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-14 01:19:57,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:19:57,691 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:19:57,691 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err6ASSERT_VIOLATIONDATA_RACE === [thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err5ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2025-03-14 01:19:57,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:19:57,692 INFO L85 PathProgramCache]: Analyzing trace with hash 456338885, now seen corresponding path program 1 times [2025-03-14 01:19:57,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:19:57,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676308792] [2025-03-14 01:19:57,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:19:57,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:19:57,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-14 01:19:57,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-14 01:19:57,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:19:57,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:19:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:19:57,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:19:57,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676308792] [2025-03-14 01:19:57,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676308792] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:19:57,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:19:57,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:19:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442370393] [2025-03-14 01:19:57,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:19:57,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:19:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:19:57,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:19:57,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:19:57,778 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 321 [2025-03-14 01:19:57,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 321 transitions, 682 flow. Second operand has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 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) [2025-03-14 01:19:57,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:19:57,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 321 [2025-03-14 01:19:57,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand