./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/29_conditionals_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/29_conditionals_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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:45:22,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:45:22,232 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-17 10:45:22,237 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:45:22,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:45:22,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:45:22,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:45:22,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:45:22,263 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:45:22,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:45:22,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:45:22,264 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:45:22,264 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:45:22,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:45:22,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:45:22,265 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:45:22,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:45:22,265 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:45:22,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:45:22,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:45:22,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:45:22,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:45:22,266 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 10:45:22,266 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 10:45:22,266 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:45:22,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:45:22,266 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:45:22,266 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:45:22,266 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:45:22,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:45:22,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:45:22,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:45:22,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:45:22,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:45:22,267 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:45:22,267 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:45:22,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:45:22,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:45:22,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:45:22,267 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:45:22,267 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:45:22,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:45:22,268 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 -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2025-03-17 10:45:22,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:45:22,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:45:22,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:45:22,489 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:45:22,489 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:45:22,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2025-03-17 10:45:23,584 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b549f9182/24e40550e2b94326ba35dbd34f7a885c/FLAGcf0e8add3 [2025-03-17 10:45:23,820 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:45:23,820 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2025-03-17 10:45:23,830 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b549f9182/24e40550e2b94326ba35dbd34f7a885c/FLAGcf0e8add3 [2025-03-17 10:45:24,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b549f9182/24e40550e2b94326ba35dbd34f7a885c [2025-03-17 10:45:24,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:45:24,144 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:45:24,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:45:24,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:45:24,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:45:24,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2f0276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24, skipping insertion in model container [2025-03-17 10:45:24,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,180 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:45:24,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:45:24,355 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:45:24,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:45:24,427 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:45:24,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24 WrapperNode [2025-03-17 10:45:24,428 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:45:24,429 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:45:24,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:45:24,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:45:24,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,461 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 69 [2025-03-17 10:45:24,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:45:24,462 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:45:24,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:45:24,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:45:24,467 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,471 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,473 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,479 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:45:24,480 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:45:24,480 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:45:24,480 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:45:24,484 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (1/1) ... [2025-03-17 10:45:24,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:45:24,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:45:24,516 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 10:45:24,518 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 10:45:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-17 10:45:24,536 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-17 10:45:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:45:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 10:45:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:45:24,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:45:24,539 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 10:45:24,615 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:45:24,616 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:45:24,764 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 10:45:24,764 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:45:24,819 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:45:24,819 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 10:45:24,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:45:24 BoogieIcfgContainer [2025-03-17 10:45:24,819 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:45:24,823 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:45:24,823 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:45:24,826 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:45:24,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:45:24" (1/3) ... [2025-03-17 10:45:24,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed934c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:45:24, skipping insertion in model container [2025-03-17 10:45:24,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:45:24" (2/3) ... [2025-03-17 10:45:24,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ed934c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:45:24, skipping insertion in model container [2025-03-17 10:45:24,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:45:24" (3/3) ... [2025-03-17 10:45:24,828 INFO L128 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2025-03-17 10:45:24,838 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:45:24,839 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 29_conditionals_vs.i that has 2 procedures, 52 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2025-03-17 10:45:24,839 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 10:45:24,878 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:24,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 118 flow [2025-03-17 10:45:24,931 INFO L124 PetriNetUnfolderBase]: 5/64 cut-off events. [2025-03-17 10:45:24,936 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:45:24,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2025-03-17 10:45:24,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 57 transitions, 118 flow [2025-03-17 10:45:24,941 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 57 transitions, 118 flow [2025-03-17 10:45:24,945 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:24,952 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;@5f798b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:24,952 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-17 10:45:24,960 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:24,961 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2025-03-17 10:45:24,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:45:24,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:24,962 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:24,962 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2025-03-17 10:45:24,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:24,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1376482264, now seen corresponding path program 1 times [2025-03-17 10:45:24,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:24,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596173183] [2025-03-17 10:45:24,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:24,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:25,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 10:45:25,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 10:45:25,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:25,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:25,041 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:25,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-17 10:45:25,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-17 10:45:25,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:25,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:25,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:25,073 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:25,073 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2025-03-17 10:45:25,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2025-03-17 10:45:25,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2025-03-17 10:45:25,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2025-03-17 10:45:25,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2025-03-17 10:45:25,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2025-03-17 10:45:25,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2025-03-17 10:45:25,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2025-03-17 10:45:25,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2025-03-17 10:45:25,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:45:25,077 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 10:45:25,081 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:25,081 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 10:45:25,113 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:25,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 94 transitions, 198 flow [2025-03-17 10:45:25,154 INFO L124 PetriNetUnfolderBase]: 10/110 cut-off events. [2025-03-17 10:45:25,156 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 10:45:25,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 110 events. 10/110 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 215 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 81. Up to 3 conditions per place. [2025-03-17 10:45:25,158 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 94 transitions, 198 flow [2025-03-17 10:45:25,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 94 transitions, 198 flow [2025-03-17 10:45:25,161 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:25,162 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;@5f798b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:25,163 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-17 10:45:25,177 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:25,177 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2025-03-17 10:45:25,177 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 10:45:25,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:25,177 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:25,178 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-03-17 10:45:25,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1358900594, now seen corresponding path program 1 times [2025-03-17 10:45:25,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:25,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575362825] [2025-03-17 10:45:25,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:25,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:25,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 10:45:25,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 10:45:25,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:25,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:25,197 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:25,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-17 10:45:25,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-17 10:45:25,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:25,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:25,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:25,209 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2025-03-17 10:45:25,210 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2025-03-17 10:45:25,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:45:25,210 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 10:45:25,211 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:25,211 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 10:45:25,261 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:25,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 131 transitions, 280 flow [2025-03-17 10:45:25,295 INFO L124 PetriNetUnfolderBase]: 15/156 cut-off events. [2025-03-17 10:45:25,295 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 10:45:25,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 15/156 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 414 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2025-03-17 10:45:25,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 131 transitions, 280 flow [2025-03-17 10:45:25,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 131 transitions, 280 flow [2025-03-17 10:45:25,299 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:25,299 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;@5f798b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:25,299 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-03-17 10:45:25,312 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:25,312 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-17 10:45:25,312 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 10:45:25,312 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:25,312 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:25,312 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-17 10:45:25,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:25,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1055532526, now seen corresponding path program 1 times [2025-03-17 10:45:25,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:25,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665427416] [2025-03-17 10:45:25,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:25,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:25,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 10:45:25,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 10:45:25,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:25,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:25,386 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 10:45:25,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665427416] [2025-03-17 10:45:25,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665427416] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:25,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:25,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 10:45:25,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708191355] [2025-03-17 10:45:25,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:25,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:45:25,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:25,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:45:25,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:45:25,409 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 131 [2025-03-17 10:45:25,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 131 transitions, 280 flow. Second operand has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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 10:45:25,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:25,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 131 [2025-03-17 10:45:25,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:45:25,508 INFO L124 PetriNetUnfolderBase]: 81/506 cut-off events. [2025-03-17 10:45:25,508 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2025-03-17 10:45:25,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 506 events. 81/506 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2627 event pairs, 42 based on Foata normal form. 104/553 useless extension candidates. Maximal degree in co-relation 184. Up to 82 conditions per place. [2025-03-17 10:45:25,515 INFO L140 encePairwiseOnDemand]: 112/131 looper letters, 9 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2025-03-17 10:45:25,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 242 flow [2025-03-17 10:45:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:45:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 10:45:25,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 228 transitions. [2025-03-17 10:45:25,526 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8702290076335878 [2025-03-17 10:45:25,527 INFO L175 Difference]: Start difference. First operand has 123 places, 131 transitions, 280 flow. Second operand 2 states and 228 transitions. [2025-03-17 10:45:25,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 242 flow [2025-03-17 10:45:25,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 240 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-17 10:45:25,537 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 222 flow [2025-03-17 10:45:25,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2025-03-17 10:45:25,541 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, -21 predicate places. [2025-03-17 10:45:25,541 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 222 flow [2025-03-17 10:45:25,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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 10:45:25,542 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:25,542 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:25,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:45:25,542 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-17 10:45:25,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:25,543 INFO L85 PathProgramCache]: Analyzing trace with hash 839549, now seen corresponding path program 1 times [2025-03-17 10:45:25,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:25,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230380675] [2025-03-17 10:45:25,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:25,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:25,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 10:45:25,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 10:45:25,565 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:25,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:25,566 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:25,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-17 10:45:25,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-17 10:45:25,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:25,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:25,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:25,586 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:25,587 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-03-17 10:45:25,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2025-03-17 10:45:25,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2025-03-17 10:45:25,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2025-03-17 10:45:25,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2025-03-17 10:45:25,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2025-03-17 10:45:25,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2025-03-17 10:45:25,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2025-03-17 10:45:25,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2025-03-17 10:45:25,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2025-03-17 10:45:25,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2025-03-17 10:45:25,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2025-03-17 10:45:25,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2025-03-17 10:45:25,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2025-03-17 10:45:25,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2025-03-17 10:45:25,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2025-03-17 10:45:25,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2025-03-17 10:45:25,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:45:25,590 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:45:25,591 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:25,591 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-17 10:45:25,627 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:25,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 168 transitions, 364 flow [2025-03-17 10:45:25,655 INFO L124 PetriNetUnfolderBase]: 20/202 cut-off events. [2025-03-17 10:45:25,655 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 10:45:25,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 202 events. 20/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 603 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 164. Up to 5 conditions per place. [2025-03-17 10:45:25,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 168 transitions, 364 flow [2025-03-17 10:45:25,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 168 transitions, 364 flow [2025-03-17 10:45:25,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:25,662 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;@5f798b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:25,663 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-17 10:45:25,667 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:25,667 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-03-17 10:45:25,667 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 10:45:25,667 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:25,667 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:25,668 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-03-17 10:45:25,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1438070038, now seen corresponding path program 1 times [2025-03-17 10:45:25,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:25,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778084555] [2025-03-17 10:45:25,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:25,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:25,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 10:45:25,696 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 10:45:25,696 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:25,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:25,707 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 10:45:25,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:25,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778084555] [2025-03-17 10:45:25,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778084555] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:25,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:25,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 10:45:25,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808433750] [2025-03-17 10:45:25,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:25,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:45:25,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:25,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:45:25,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:45:25,712 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 168 [2025-03-17 10:45:25,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 168 transitions, 364 flow. Second operand has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 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 10:45:25,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:25,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 168 [2025-03-17 10:45:25,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:45:25,919 INFO L124 PetriNetUnfolderBase]: 324/1604 cut-off events. [2025-03-17 10:45:25,920 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2025-03-17 10:45:25,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1604 events. 324/1604 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 11945 event pairs, 204 based on Foata normal form. 392/1819 useless extension candidates. Maximal degree in co-relation 639. Up to 325 conditions per place. [2025-03-17 10:45:25,934 INFO L140 encePairwiseOnDemand]: 143/168 looper letters, 12 selfloop transitions, 0 changer transitions 0/132 dead transitions. [2025-03-17 10:45:25,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 132 transitions, 316 flow [2025-03-17 10:45:25,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:45:25,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 10:45:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 291 transitions. [2025-03-17 10:45:25,938 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8660714285714286 [2025-03-17 10:45:25,938 INFO L175 Difference]: Start difference. First operand has 157 places, 168 transitions, 364 flow. Second operand 2 states and 291 transitions. [2025-03-17 10:45:25,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 132 transitions, 316 flow [2025-03-17 10:45:25,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 132 transitions, 310 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-03-17 10:45:25,941 INFO L231 Difference]: Finished difference. Result has 130 places, 132 transitions, 286 flow [2025-03-17 10:45:25,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=286, PETRI_PLACES=130, PETRI_TRANSITIONS=132} [2025-03-17 10:45:25,944 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, -27 predicate places. [2025-03-17 10:45:25,945 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 132 transitions, 286 flow [2025-03-17 10:45:25,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 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 10:45:25,946 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:25,946 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] [2025-03-17 10:45:25,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 10:45:25,946 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-03-17 10:45:25,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash -78733611, now seen corresponding path program 1 times [2025-03-17 10:45:25,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:25,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498747094] [2025-03-17 10:45:25,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:25,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:25,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-17 10:45:25,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 10:45:25,970 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:25,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:25,971 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:25,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-17 10:45:25,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 10:45:25,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:25,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:25,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:25,992 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:25,992 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-03-17 10:45:25,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2025-03-17 10:45:25,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2025-03-17 10:45:25,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2025-03-17 10:45:25,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2025-03-17 10:45:25,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2025-03-17 10:45:25,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2025-03-17 10:45:25,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2025-03-17 10:45:25,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2025-03-17 10:45:25,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2025-03-17 10:45:25,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2025-03-17 10:45:25,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2025-03-17 10:45:25,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2025-03-17 10:45:25,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2025-03-17 10:45:25,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2025-03-17 10:45:25,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2025-03-17 10:45:25,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2025-03-17 10:45:25,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2025-03-17 10:45:25,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2025-03-17 10:45:25,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2025-03-17 10:45:25,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2025-03-17 10:45:25,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 10:45:25,995 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:45:25,995 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:25,995 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-17 10:45:26,038 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:26,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 205 transitions, 450 flow [2025-03-17 10:45:26,063 INFO L124 PetriNetUnfolderBase]: 25/248 cut-off events. [2025-03-17 10:45:26,063 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-17 10:45:26,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 248 events. 25/248 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 800 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 215. Up to 6 conditions per place. [2025-03-17 10:45:26,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 205 transitions, 450 flow [2025-03-17 10:45:26,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 205 transitions, 450 flow [2025-03-17 10:45:26,068 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:26,069 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;@5f798b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:26,069 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-03-17 10:45:26,073 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:26,073 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-17 10:45:26,073 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 10:45:26,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:26,073 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:26,073 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-17 10:45:26,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:26,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1575194117, now seen corresponding path program 1 times [2025-03-17 10:45:26,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:26,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288117865] [2025-03-17 10:45:26,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:26,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:26,083 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 10:45:26,085 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 10:45:26,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:26,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:26,103 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 10:45:26,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:26,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288117865] [2025-03-17 10:45:26,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288117865] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:26,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:26,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 10:45:26,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932013429] [2025-03-17 10:45:26,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:26,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:45:26,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:26,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:45:26,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:45:26,105 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 205 [2025-03-17 10:45:26,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 450 flow. Second operand has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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 10:45:26,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:26,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 205 [2025-03-17 10:45:26,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:45:26,737 INFO L124 PetriNetUnfolderBase]: 1215/5060 cut-off events. [2025-03-17 10:45:26,737 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2025-03-17 10:45:26,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 5060 events. 1215/5060 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 48396 event pairs, 852 based on Foata normal form. 1418/5941 useless extension candidates. Maximal degree in co-relation 2142. Up to 1216 conditions per place. [2025-03-17 10:45:26,813 INFO L140 encePairwiseOnDemand]: 174/205 looper letters, 15 selfloop transitions, 0 changer transitions 0/161 dead transitions. [2025-03-17 10:45:26,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 161 transitions, 392 flow [2025-03-17 10:45:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:45:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 10:45:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 354 transitions. [2025-03-17 10:45:26,815 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8634146341463415 [2025-03-17 10:45:26,815 INFO L175 Difference]: Start difference. First operand has 191 places, 205 transitions, 450 flow. Second operand 2 states and 354 transitions. [2025-03-17 10:45:26,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 161 transitions, 392 flow [2025-03-17 10:45:26,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 161 transitions, 380 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-17 10:45:26,820 INFO L231 Difference]: Finished difference. Result has 158 places, 161 transitions, 350 flow [2025-03-17 10:45:26,821 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=350, PETRI_PLACES=158, PETRI_TRANSITIONS=161} [2025-03-17 10:45:26,821 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, -33 predicate places. [2025-03-17 10:45:26,821 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 161 transitions, 350 flow [2025-03-17 10:45:26,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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 10:45:26,822 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:26,822 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] [2025-03-17 10:45:26,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 10:45:26,822 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-17 10:45:26,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash -688882570, now seen corresponding path program 1 times [2025-03-17 10:45:26,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:26,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124273455] [2025-03-17 10:45:26,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:26,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:26,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-17 10:45:26,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-17 10:45:26,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:26,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:26,838 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:26,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-17 10:45:26,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-17 10:45:26,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:26,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:26,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:26,856 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:26,856 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-03-17 10:45:26,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2025-03-17 10:45:26,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2025-03-17 10:45:26,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2025-03-17 10:45:26,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2025-03-17 10:45:26,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2025-03-17 10:45:26,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2025-03-17 10:45:26,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2025-03-17 10:45:26,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 10:45:26,859 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:45:26,859 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:26,859 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-03-17 10:45:26,895 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:26,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 242 transitions, 538 flow [2025-03-17 10:45:26,919 INFO L124 PetriNetUnfolderBase]: 30/294 cut-off events. [2025-03-17 10:45:26,919 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-03-17 10:45:26,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 294 events. 30/294 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1016 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 267. Up to 7 conditions per place. [2025-03-17 10:45:26,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 242 transitions, 538 flow [2025-03-17 10:45:26,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 242 transitions, 538 flow [2025-03-17 10:45:26,924 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:26,924 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;@5f798b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:26,924 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-17 10:45:26,927 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:26,927 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-17 10:45:26,927 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 10:45:26,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:26,927 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:26,927 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-17 10:45:26,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1362643977, now seen corresponding path program 1 times [2025-03-17 10:45:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:26,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698720327] [2025-03-17 10:45:26,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:26,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:26,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 10:45:26,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 10:45:26,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:26,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:26,942 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 10:45:26,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:26,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698720327] [2025-03-17 10:45:26,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698720327] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:26,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:26,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 10:45:26,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742744167] [2025-03-17 10:45:26,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:26,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:45:26,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:26,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:45:26,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:45:26,944 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 242 [2025-03-17 10:45:26,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 242 transitions, 538 flow. Second operand has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 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 10:45:26,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:26,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 242 [2025-03-17 10:45:26,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:45:28,903 INFO L124 PetriNetUnfolderBase]: 4374/15914 cut-off events. [2025-03-17 10:45:28,903 INFO L125 PetriNetUnfolderBase]: For 10297/10297 co-relation queries the response was YES. [2025-03-17 10:45:28,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22665 conditions, 15914 events. 4374/15914 cut-off events. For 10297/10297 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 181104 event pairs, 3282 based on Foata normal form. 4982/19279 useless extension candidates. Maximal degree in co-relation 7056. Up to 4375 conditions per place. [2025-03-17 10:45:29,069 INFO L140 encePairwiseOnDemand]: 205/242 looper letters, 18 selfloop transitions, 0 changer transitions 0/190 dead transitions. [2025-03-17 10:45:29,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 190 transitions, 470 flow [2025-03-17 10:45:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:45:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 10:45:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 417 transitions. [2025-03-17 10:45:29,071 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8615702479338843 [2025-03-17 10:45:29,071 INFO L175 Difference]: Start difference. First operand has 225 places, 242 transitions, 538 flow. Second operand 2 states and 417 transitions. [2025-03-17 10:45:29,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 190 transitions, 470 flow [2025-03-17 10:45:29,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 190 transitions, 450 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-03-17 10:45:29,080 INFO L231 Difference]: Finished difference. Result has 186 places, 190 transitions, 414 flow [2025-03-17 10:45:29,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=186, PETRI_TRANSITIONS=190} [2025-03-17 10:45:29,080 INFO L279 CegarLoopForPetriNet]: 225 programPoint places, -39 predicate places. [2025-03-17 10:45:29,081 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 190 transitions, 414 flow [2025-03-17 10:45:29,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 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 10:45:29,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:29,081 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:29,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 10:45:29,081 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-17 10:45:29,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:29,082 INFO L85 PathProgramCache]: Analyzing trace with hash 645973056, now seen corresponding path program 1 times [2025-03-17 10:45:29,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:29,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715478259] [2025-03-17 10:45:29,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:29,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:29,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-17 10:45:29,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-17 10:45:29,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:29,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:29,093 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:29,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-17 10:45:29,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-17 10:45:29,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:29,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:29,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:29,107 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:29,107 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-03-17 10:45:29,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2025-03-17 10:45:29,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2025-03-17 10:45:29,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2025-03-17 10:45:29,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2025-03-17 10:45:29,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2025-03-17 10:45:29,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2025-03-17 10:45:29,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2025-03-17 10:45:29,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2025-03-17 10:45:29,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2025-03-17 10:45:29,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2025-03-17 10:45:29,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2025-03-17 10:45:29,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2025-03-17 10:45:29,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2025-03-17 10:45:29,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2025-03-17 10:45:29,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 10:45:29,109 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:45:29,110 WARN L246 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:29,110 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2025-03-17 10:45:29,141 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:29,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 279 transitions, 628 flow [2025-03-17 10:45:29,166 INFO L124 PetriNetUnfolderBase]: 35/340 cut-off events. [2025-03-17 10:45:29,166 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-03-17 10:45:29,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 340 events. 35/340 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1223 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2025-03-17 10:45:29,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 279 transitions, 628 flow [2025-03-17 10:45:29,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 279 transitions, 628 flow [2025-03-17 10:45:29,173 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:29,173 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;@5f798b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:29,173 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2025-03-17 10:45:29,175 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:29,175 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-03-17 10:45:29,175 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 10:45:29,175 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:29,175 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:29,176 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-17 10:45:29,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:29,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2128671352, now seen corresponding path program 1 times [2025-03-17 10:45:29,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:29,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580355524] [2025-03-17 10:45:29,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:29,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:29,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 10:45:29,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 10:45:29,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:29,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:29,195 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 10:45:29,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:29,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580355524] [2025-03-17 10:45:29,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580355524] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:29,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:29,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 10:45:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255617946] [2025-03-17 10:45:29,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:29,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:45:29,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:29,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:45:29,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:45:29,200 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 279 [2025-03-17 10:45:29,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 279 transitions, 628 flow. Second operand has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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 10:45:29,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:29,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 279 [2025-03-17 10:45:29,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:45:35,655 INFO L124 PetriNetUnfolderBase]: 15309/49934 cut-off events. [2025-03-17 10:45:35,655 INFO L125 PetriNetUnfolderBase]: For 42373/42373 co-relation queries the response was YES. [2025-03-17 10:45:36,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73453 conditions, 49934 events. 15309/49934 cut-off events. For 42373/42373 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 654091 event pairs, 12030 based on Foata normal form. 17132/62209 useless extension candidates. Maximal degree in co-relation 23013. Up to 15310 conditions per place. [2025-03-17 10:45:36,705 INFO L140 encePairwiseOnDemand]: 236/279 looper letters, 21 selfloop transitions, 0 changer transitions 0/219 dead transitions. [2025-03-17 10:45:36,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 219 transitions, 550 flow [2025-03-17 10:45:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:45:36,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 10:45:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 480 transitions. [2025-03-17 10:45:36,707 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8602150537634409 [2025-03-17 10:45:36,707 INFO L175 Difference]: Start difference. First operand has 259 places, 279 transitions, 628 flow. Second operand 2 states and 480 transitions. [2025-03-17 10:45:36,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 219 transitions, 550 flow [2025-03-17 10:45:36,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 219 transitions, 520 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-03-17 10:45:36,726 INFO L231 Difference]: Finished difference. Result has 214 places, 219 transitions, 478 flow [2025-03-17 10:45:36,727 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=214, PETRI_TRANSITIONS=219} [2025-03-17 10:45:36,727 INFO L279 CegarLoopForPetriNet]: 259 programPoint places, -45 predicate places. [2025-03-17 10:45:36,728 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 219 transitions, 478 flow [2025-03-17 10:45:36,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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 10:45:36,728 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:36,728 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:36,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 10:45:36,728 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-17 10:45:36,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:36,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1075711469, now seen corresponding path program 1 times [2025-03-17 10:45:36,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:36,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425023137] [2025-03-17 10:45:36,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:36,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:36,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 10:45:36,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 10:45:36,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:36,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:36,745 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:45:36,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 10:45:36,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 10:45:36,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:36,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:45:36,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:45:36,761 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:45:36,761 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2025-03-17 10:45:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2025-03-17 10:45:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2025-03-17 10:45:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2025-03-17 10:45:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2025-03-17 10:45:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2025-03-17 10:45:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2025-03-17 10:45:36,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2025-03-17 10:45:36,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2025-03-17 10:45:36,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2025-03-17 10:45:36,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2025-03-17 10:45:36,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2025-03-17 10:45:36,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2025-03-17 10:45:36,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2025-03-17 10:45:36,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2025-03-17 10:45:36,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2025-03-17 10:45:36,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2025-03-17 10:45:36,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2025-03-17 10:45:36,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2025-03-17 10:45:36,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 10:45:36,763 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:45:36,764 WARN L246 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:45:36,764 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2025-03-17 10:45:36,803 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:45:36,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 316 transitions, 720 flow [2025-03-17 10:45:36,834 INFO L124 PetriNetUnfolderBase]: 40/386 cut-off events. [2025-03-17 10:45:36,834 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2025-03-17 10:45:36,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 386 events. 40/386 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1404 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 374. Up to 9 conditions per place. [2025-03-17 10:45:36,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 316 transitions, 720 flow [2025-03-17 10:45:36,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 316 transitions, 720 flow [2025-03-17 10:45:36,844 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:45:36,845 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;@5f798b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:45:36,845 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2025-03-17 10:45:36,847 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:45:36,847 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-17 10:45:36,847 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 10:45:36,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:45:36,847 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:45:36,848 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2025-03-17 10:45:36,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:45:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1182823080, now seen corresponding path program 1 times [2025-03-17 10:45:36,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:45:36,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002751533] [2025-03-17 10:45:36,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:45:36,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:45:36,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 10:45:36,860 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 10:45:36,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:45:36,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:45:36,869 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 10:45:36,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:45:36,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002751533] [2025-03-17 10:45:36,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002751533] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:45:36,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:45:36,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 10:45:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526727987] [2025-03-17 10:45:36,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:45:36,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:45:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:45:36,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:45:36,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:45:36,871 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 316 [2025-03-17 10:45:36,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 316 transitions, 720 flow. Second operand has 2 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 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 10:45:36,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:45:36,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 316 [2025-03-17 10:45:36,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:46:00,714 INFO L124 PetriNetUnfolderBase]: 52488/156368 cut-off events. [2025-03-17 10:46:00,715 INFO L125 PetriNetUnfolderBase]: For 167032/167032 co-relation queries the response was YES. [2025-03-17 10:46:03,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236750 conditions, 156368 events. 52488/156368 cut-off events. For 167032/167032 co-relation queries the response was YES. Maximal size of possible extension queue 4036. Compared 2280336 event pairs, 42648 based on Foata normal form. 57956/199747 useless extension candidates. Maximal degree in co-relation 74529. Up to 52489 conditions per place. [2025-03-17 10:46:04,528 INFO L140 encePairwiseOnDemand]: 267/316 looper letters, 24 selfloop transitions, 0 changer transitions 0/248 dead transitions. [2025-03-17 10:46:04,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 248 transitions, 632 flow [2025-03-17 10:46:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:46:04,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-17 10:46:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 543 transitions. [2025-03-17 10:46:04,530 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8591772151898734 [2025-03-17 10:46:04,531 INFO L175 Difference]: Start difference. First operand has 293 places, 316 transitions, 720 flow. Second operand 2 states and 543 transitions. [2025-03-17 10:46:04,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 248 transitions, 632 flow [2025-03-17 10:46:04,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 248 transitions, 590 flow, removed 21 selfloop flow, removed 0 redundant places. [2025-03-17 10:46:04,722 INFO L231 Difference]: Finished difference. Result has 242 places, 248 transitions, 542 flow [2025-03-17 10:46:04,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=542, PETRI_PLACES=242, PETRI_TRANSITIONS=248} [2025-03-17 10:46:04,723 INFO L279 CegarLoopForPetriNet]: 293 programPoint places, -51 predicate places. [2025-03-17 10:46:04,723 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 248 transitions, 542 flow [2025-03-17 10:46:04,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 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 10:46:04,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:46:04,723 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:46:04,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 10:46:04,723 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2025-03-17 10:46:04,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:46:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1548049969, now seen corresponding path program 1 times [2025-03-17 10:46:04,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:46:04,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189631440] [2025-03-17 10:46:04,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:46:04,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:46:04,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-17 10:46:04,735 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-17 10:46:04,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:04,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:46:04,735 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:46:04,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-17 10:46:04,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-17 10:46:04,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:04,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:46:04,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:46:04,747 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:46:04,747 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2025-03-17 10:46:04,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2025-03-17 10:46:04,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2025-03-17 10:46:04,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2025-03-17 10:46:04,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2025-03-17 10:46:04,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2025-03-17 10:46:04,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2025-03-17 10:46:04,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2025-03-17 10:46:04,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 10:46:04,750 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:46:04,750 WARN L246 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:46:04,750 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2025-03-17 10:46:04,790 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:46:04,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 353 transitions, 814 flow [2025-03-17 10:46:04,826 INFO L124 PetriNetUnfolderBase]: 45/432 cut-off events. [2025-03-17 10:46:04,827 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2025-03-17 10:46:04,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 432 events. 45/432 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1601 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 430. Up to 10 conditions per place. [2025-03-17 10:46:04,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 353 transitions, 814 flow [2025-03-17 10:46:04,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 353 transitions, 814 flow [2025-03-17 10:46:04,836 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:46:04,837 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;@5f798b03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:46:04,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-03-17 10:46:04,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:46:04,839 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-03-17 10:46:04,839 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 10:46:04,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:46:04,839 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:46:04,839 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2025-03-17 10:46:04,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:46:04,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1109545395, now seen corresponding path program 1 times [2025-03-17 10:46:04,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:46:04,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356450519] [2025-03-17 10:46:04,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:46:04,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:46:04,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 10:46:04,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 10:46:04,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:46:04,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:46:04,852 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 10:46:04,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:46:04,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356450519] [2025-03-17 10:46:04,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356450519] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:46:04,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:46:04,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 10:46:04,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429018332] [2025-03-17 10:46:04,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:46:04,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:46:04,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:46:04,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:46:04,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:46:04,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 353 [2025-03-17 10:46:04,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 353 transitions, 814 flow. Second operand has 2 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 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 10:46:04,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:46:04,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 353 [2025-03-17 10:46:04,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand