./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 735b3cc8 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind3-nondet.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 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 --- Real Ultimate output --- This is Ultimate 0.3.0-?-735b3cc-m [2025-03-14 01:52:32,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-14 01:52:32,756 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-14 01:52:32,760 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-14 01:52:32,760 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-14 01:52:32,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-14 01:52:32,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-14 01:52:32,784 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-14 01:52:32,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-14 01:52:32,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-14 01:52:32,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-14 01:52:32,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-14 01:52:32,784 INFO L153 SettingsManager]: * Use SBE=true [2025-03-14 01:52:32,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-14 01:52:32,785 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-14 01:52:32,787 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-14 01:52:32,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-14 01:52:32,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-14 01:52:32,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:52:32,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-14 01:52:32,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-14 01:52:32,787 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-14 01:52:32,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-14 01:52:32,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-14 01:52:32,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-14 01:52:32,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-14 01:52:32,788 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-14 01:52:32,788 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-14 01:52:32,788 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-14 01:52:32,788 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 -> 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 [2025-03-14 01:52:33,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-14 01:52:33,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-14 01:52:33,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-14 01:52:33,033 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-14 01:52:33,033 INFO L274 PluginConnector]: CDTParser initialized [2025-03-14 01:52:33,036 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-03-14 01:52:34,196 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff34fdd1e/2d8b973dd44f4693bf1307fcdd3ffc54/FLAG6c3e2fc52 [2025-03-14 01:52:34,429 INFO L384 CDTParser]: Found 1 translation units. [2025-03-14 01:52:34,429 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-03-14 01:52:34,438 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff34fdd1e/2d8b973dd44f4693bf1307fcdd3ffc54/FLAG6c3e2fc52 [2025-03-14 01:52:34,449 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff34fdd1e/2d8b973dd44f4693bf1307fcdd3ffc54 [2025-03-14 01:52:34,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-14 01:52:34,451 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-14 01:52:34,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-14 01:52:34,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-14 01:52:34,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-14 01:52:34,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33bf08ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34, skipping insertion in model container [2025-03-14 01:52:34,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,479 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-14 01:52:34,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:52:34,712 INFO L200 MainTranslator]: Completed pre-run [2025-03-14 01:52:34,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-14 01:52:34,776 INFO L204 MainTranslator]: Completed translation [2025-03-14 01:52:34,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34 WrapperNode [2025-03-14 01:52:34,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-14 01:52:34,777 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-14 01:52:34,777 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-14 01:52:34,777 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-14 01:52:34,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,789 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,802 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 83 [2025-03-14 01:52:34,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-14 01:52:34,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-14 01:52:34,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-14 01:52:34,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-14 01:52:34,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,813 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,815 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,817 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-14 01:52:34,817 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-14 01:52:34,817 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-14 01:52:34,817 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-14 01:52:34,818 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (1/1) ... [2025-03-14 01:52:34,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-14 01:52:34,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-14 01:52:34,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-14 01:52:34,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-14 01:52:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-14 01:52:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-14 01:52:34,861 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-14 01:52:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-14 01:52:34,861 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-14 01:52:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-14 01:52:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-14 01:52:34,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-14 01:52:34,862 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-14 01:52:34,957 INFO L256 CfgBuilder]: Building ICFG [2025-03-14 01:52:34,958 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-14 01:52:35,101 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-14 01:52:35,102 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-14 01:52:35,102 INFO L318 CfgBuilder]: Performing block encoding [2025-03-14 01:52:35,120 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-14 01:52:35,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:52:35 BoogieIcfgContainer [2025-03-14 01:52:35,120 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-14 01:52:35,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-14 01:52:35,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-14 01:52:35,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-14 01:52:35,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.03 01:52:34" (1/3) ... [2025-03-14 01:52:35,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177aac2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:52:35, skipping insertion in model container [2025-03-14 01:52:35,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.03 01:52:34" (2/3) ... [2025-03-14 01:52:35,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177aac2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.03 01:52:35, skipping insertion in model container [2025-03-14 01:52:35,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.03 01:52:35" (3/3) ... [2025-03-14 01:52:35,129 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2025-03-14 01:52:35,138 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-14 01:52:35,140 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-nondet.i that has 3 procedures, 102 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-03-14 01:52:35,140 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-14 01:52:35,200 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:52:35,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 108 transitions, 224 flow [2025-03-14 01:52:35,282 INFO L124 PetriNetUnfolderBase]: 10/157 cut-off events. [2025-03-14 01:52:35,284 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:52:35,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 157 events. 10/157 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 268 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 95. Up to 4 conditions per place. [2025-03-14 01:52:35,289 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 108 transitions, 224 flow [2025-03-14 01:52:35,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 91 transitions, 189 flow [2025-03-14 01:52:35,298 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:52:35,306 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;@41689c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:52:35,306 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-14 01:52:35,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:52:35,311 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-14 01:52:35,311 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:52:35,311 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:35,312 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:35,312 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-03-14 01:52:35,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:35,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1745959639, now seen corresponding path program 1 times [2025-03-14 01:52:35,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:35,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368805408] [2025-03-14 01:52:35,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:35,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:35,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 01:52:35,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:52:35,406 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:35,406 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:35,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:35,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368805408] [2025-03-14 01:52:35,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368805408] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:35,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:35,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:35,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078443674] [2025-03-14 01:52:35,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:35,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:35,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:35,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:35,564 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 108 [2025-03-14 01:52:35,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:35,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:35,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 108 [2025-03-14 01:52:35,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:35,617 INFO L124 PetriNetUnfolderBase]: 11/147 cut-off events. [2025-03-14 01:52:35,618 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-14 01:52:35,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 147 events. 11/147 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 291 event pairs, 8 based on Foata normal form. 1/131 useless extension candidates. Maximal degree in co-relation 104. Up to 33 conditions per place. [2025-03-14 01:52:35,621 INFO L140 encePairwiseOnDemand]: 103/108 looper letters, 13 selfloop transitions, 2 changer transitions 1/88 dead transitions. [2025-03-14 01:52:35,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 213 flow [2025-03-14 01:52:35,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:35,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2025-03-14 01:52:35,633 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8611111111111112 [2025-03-14 01:52:35,635 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 189 flow. Second operand 3 states and 279 transitions. [2025-03-14 01:52:35,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 213 flow [2025-03-14 01:52:35,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:35,641 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 184 flow [2025-03-14 01:52:35,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2025-03-14 01:52:35,648 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, 0 predicate places. [2025-03-14 01:52:35,648 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 184 flow [2025-03-14 01:52:35,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:35,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:35,649 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] [2025-03-14 01:52:35,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-14 01:52:35,650 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-03-14 01:52:35,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:35,651 INFO L85 PathProgramCache]: Analyzing trace with hash 890061647, now seen corresponding path program 1 times [2025-03-14 01:52:35,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:35,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430568103] [2025-03-14 01:52:35,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:35,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:35,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:52:35,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:52:35,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:35,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:35,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:35,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430568103] [2025-03-14 01:52:35,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430568103] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:35,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:35,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:35,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480651721] [2025-03-14 01:52:35,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:35,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:35,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:35,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:35,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:35,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 108 [2025-03-14 01:52:35,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:35,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:35,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 108 [2025-03-14 01:52:35,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:35,781 INFO L124 PetriNetUnfolderBase]: 7/129 cut-off events. [2025-03-14 01:52:35,782 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 01:52:35,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 129 events. 7/129 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 226 event pairs, 4 based on Foata normal form. 3/124 useless extension candidates. Maximal degree in co-relation 144. Up to 25 conditions per place. [2025-03-14 01:52:35,785 INFO L140 encePairwiseOnDemand]: 102/108 looper letters, 11 selfloop transitions, 1 changer transitions 24/82 dead transitions. [2025-03-14 01:52:35,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 82 transitions, 202 flow [2025-03-14 01:52:35,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2025-03-14 01:52:35,787 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8271604938271605 [2025-03-14 01:52:35,787 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 184 flow. Second operand 3 states and 268 transitions. [2025-03-14 01:52:35,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 82 transitions, 202 flow [2025-03-14 01:52:35,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 82 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:52:35,789 INFO L231 Difference]: Finished difference. Result has 87 places, 58 transitions, 122 flow [2025-03-14 01:52:35,790 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=87, PETRI_TRANSITIONS=58} [2025-03-14 01:52:35,790 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2025-03-14 01:52:35,790 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 58 transitions, 122 flow [2025-03-14 01:52:35,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:35,791 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:35,791 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:35,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-14 01:52:35,791 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-03-14 01:52:35,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1791617286, now seen corresponding path program 1 times [2025-03-14 01:52:35,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:35,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303335804] [2025-03-14 01:52:35,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:35,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:35,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 55 statements into 1 equivalence classes. [2025-03-14 01:52:35,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 55 of 55 statements. [2025-03-14 01:52:35,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:35,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:36,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303335804] [2025-03-14 01:52:36,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303335804] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:36,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:36,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:52:36,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550982660] [2025-03-14 01:52:36,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:36,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:52:36,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:36,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:52:36,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:52:36,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 108 [2025-03-14 01:52:36,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 58 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:36,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 108 [2025-03-14 01:52:36,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:36,107 INFO L124 PetriNetUnfolderBase]: 2/86 cut-off events. [2025-03-14 01:52:36,110 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-14 01:52:36,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 86 events. 2/86 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 2 based on Foata normal form. 1/86 useless extension candidates. Maximal degree in co-relation 88. Up to 17 conditions per place. [2025-03-14 01:52:36,111 INFO L140 encePairwiseOnDemand]: 103/108 looper letters, 11 selfloop transitions, 2 changer transitions 4/61 dead transitions. [2025-03-14 01:52:36,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 162 flow [2025-03-14 01:52:36,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:52:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:52:36,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2025-03-14 01:52:36,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8296296296296296 [2025-03-14 01:52:36,114 INFO L175 Difference]: Start difference. First operand has 87 places, 58 transitions, 122 flow. Second operand 5 states and 448 transitions. [2025-03-14 01:52:36,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 162 flow [2025-03-14 01:52:36,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:36,116 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 127 flow [2025-03-14 01:52:36,117 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2025-03-14 01:52:36,118 INFO L279 CegarLoopForPetriNet]: 93 programPoint places, -26 predicate places. [2025-03-14 01:52:36,118 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 127 flow [2025-03-14 01:52:36,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:36,119 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:36,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-14 01:52:36,119 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2025-03-14 01:52:36,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:36,120 INFO L85 PathProgramCache]: Analyzing trace with hash 244739749, now seen corresponding path program 1 times [2025-03-14 01:52:36,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:36,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633419347] [2025-03-14 01:52:36,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:36,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:36,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-14 01:52:36,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-14 01:52:36,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:36,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:36,153 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:52:36,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-14 01:52:36,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-14 01:52:36,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:36,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:36,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:52:36,185 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:52:36,186 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2025-03-14 01:52:36,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2025-03-14 01:52:36,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2025-03-14 01:52:36,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2025-03-14 01:52:36,187 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2025-03-14 01:52:36,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2025-03-14 01:52:36,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2025-03-14 01:52:36,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2025-03-14 01:52:36,188 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2025-03-14 01:52:36,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-14 01:52:36,188 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-14 01:52:36,190 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:52:36,190 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-14 01:52:36,216 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:52:36,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 144 transitions, 308 flow [2025-03-14 01:52:36,244 INFO L124 PetriNetUnfolderBase]: 14/220 cut-off events. [2025-03-14 01:52:36,244 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-14 01:52:36,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 220 events. 14/220 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 471 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 231. Up to 6 conditions per place. [2025-03-14 01:52:36,246 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 144 transitions, 308 flow [2025-03-14 01:52:36,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 98 transitions, 209 flow [2025-03-14 01:52:36,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:52:36,248 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;@41689c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:52:36,249 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-03-14 01:52:36,250 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:52:36,252 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-14 01:52:36,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:52:36,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:36,252 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:36,252 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2025-03-14 01:52:36,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:36,253 INFO L85 PathProgramCache]: Analyzing trace with hash 510905047, now seen corresponding path program 1 times [2025-03-14 01:52:36,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:36,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529513498] [2025-03-14 01:52:36,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:36,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:36,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 01:52:36,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:52:36,258 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:36,258 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:36,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:36,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529513498] [2025-03-14 01:52:36,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529513498] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:36,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:36,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:36,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356369788] [2025-03-14 01:52:36,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:36,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:36,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:36,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:36,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:36,323 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 144 [2025-03-14 01:52:36,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:36,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 144 [2025-03-14 01:52:36,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:36,358 INFO L124 PetriNetUnfolderBase]: 38/271 cut-off events. [2025-03-14 01:52:36,358 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-03-14 01:52:36,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 271 events. 38/271 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 904 event pairs, 34 based on Foata normal form. 1/243 useless extension candidates. Maximal degree in co-relation 188. Up to 83 conditions per place. [2025-03-14 01:52:36,361 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 15 selfloop transitions, 2 changer transitions 1/95 dead transitions. [2025-03-14 01:52:36,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 237 flow [2025-03-14 01:52:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2025-03-14 01:52:36,363 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2025-03-14 01:52:36,363 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 209 flow. Second operand 3 states and 368 transitions. [2025-03-14 01:52:36,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 237 flow [2025-03-14 01:52:36,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 95 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:36,365 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 204 flow [2025-03-14 01:52:36,365 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2025-03-14 01:52:36,366 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, 0 predicate places. [2025-03-14 01:52:36,366 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 204 flow [2025-03-14 01:52:36,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:36,368 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] [2025-03-14 01:52:36,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-14 01:52:36,369 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2025-03-14 01:52:36,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash -672434353, now seen corresponding path program 1 times [2025-03-14 01:52:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:36,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471339981] [2025-03-14 01:52:36,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:36,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:36,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:52:36,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:52:36,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:36,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:36,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:36,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471339981] [2025-03-14 01:52:36,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471339981] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:36,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:36,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:36,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454253941] [2025-03-14 01:52:36,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:36,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:36,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:36,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:36,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:36,408 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 144 [2025-03-14 01:52:36,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:36,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 144 [2025-03-14 01:52:36,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:36,438 INFO L124 PetriNetUnfolderBase]: 26/233 cut-off events. [2025-03-14 01:52:36,438 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-03-14 01:52:36,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 233 events. 26/233 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 708 event pairs, 22 based on Foata normal form. 7/223 useless extension candidates. Maximal degree in co-relation 300. Up to 63 conditions per place. [2025-03-14 01:52:36,439 INFO L140 encePairwiseOnDemand]: 138/144 looper letters, 13 selfloop transitions, 1 changer transitions 18/89 dead transitions. [2025-03-14 01:52:36,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 89 transitions, 226 flow [2025-03-14 01:52:36,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:36,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2025-03-14 01:52:36,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8125 [2025-03-14 01:52:36,441 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 204 flow. Second operand 3 states and 351 transitions. [2025-03-14 01:52:36,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 89 transitions, 226 flow [2025-03-14 01:52:36,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 89 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:52:36,442 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 154 flow [2025-03-14 01:52:36,442 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2025-03-14 01:52:36,443 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, -6 predicate places. [2025-03-14 01:52:36,443 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 154 flow [2025-03-14 01:52:36,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:36,443 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:36,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-14 01:52:36,443 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2025-03-14 01:52:36,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1932738045, now seen corresponding path program 1 times [2025-03-14 01:52:36,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:36,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530569539] [2025-03-14 01:52:36,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:36,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:36,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-14 01:52:36,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-14 01:52:36,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:36,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:36,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:36,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:36,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530569539] [2025-03-14 01:52:36,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530569539] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:36,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:36,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:52:36,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538794947] [2025-03-14 01:52:36,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:36,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:52:36,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:36,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:52:36,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:52:36,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 144 [2025-03-14 01:52:36,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:36,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 144 [2025-03-14 01:52:36,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:36,616 INFO L124 PetriNetUnfolderBase]: 17/181 cut-off events. [2025-03-14 01:52:36,616 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-14 01:52:36,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 181 events. 17/181 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 425 event pairs, 17 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 224. Up to 51 conditions per place. [2025-03-14 01:52:36,617 INFO L140 encePairwiseOnDemand]: 138/144 looper letters, 13 selfloop transitions, 2 changer transitions 10/75 dead transitions. [2025-03-14 01:52:36,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 75 transitions, 204 flow [2025-03-14 01:52:36,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:52:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:52:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 602 transitions. [2025-03-14 01:52:36,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8361111111111111 [2025-03-14 01:52:36,619 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 154 flow. Second operand 5 states and 602 transitions. [2025-03-14 01:52:36,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 75 transitions, 204 flow [2025-03-14 01:52:36,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 75 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:36,620 INFO L231 Difference]: Finished difference. Result has 82 places, 65 transitions, 149 flow [2025-03-14 01:52:36,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=82, PETRI_TRANSITIONS=65} [2025-03-14 01:52:36,620 INFO L279 CegarLoopForPetriNet]: 102 programPoint places, -20 predicate places. [2025-03-14 01:52:36,621 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 65 transitions, 149 flow [2025-03-14 01:52:36,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,621 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:36,621 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:36,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-14 01:52:36,621 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2025-03-14 01:52:36,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:36,622 INFO L85 PathProgramCache]: Analyzing trace with hash -978731554, now seen corresponding path program 1 times [2025-03-14 01:52:36,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:36,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820054883] [2025-03-14 01:52:36,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:36,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:36,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-14 01:52:36,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-14 01:52:36,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:36,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:36,641 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:52:36,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-03-14 01:52:36,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-03-14 01:52:36,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:36,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:36,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:52:36,660 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:52:36,661 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2025-03-14 01:52:36,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2025-03-14 01:52:36,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2025-03-14 01:52:36,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2025-03-14 01:52:36,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2025-03-14 01:52:36,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2025-03-14 01:52:36,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 10 remaining) [2025-03-14 01:52:36,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2025-03-14 01:52:36,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2025-03-14 01:52:36,661 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2025-03-14 01:52:36,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-14 01:52:36,661 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-14 01:52:36,664 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:52:36,665 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-14 01:52:36,687 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:52:36,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 180 transitions, 396 flow [2025-03-14 01:52:36,703 INFO L124 PetriNetUnfolderBase]: 18/283 cut-off events. [2025-03-14 01:52:36,704 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-14 01:52:36,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 283 events. 18/283 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 662 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 300. Up to 8 conditions per place. [2025-03-14 01:52:36,705 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 180 transitions, 396 flow [2025-03-14 01:52:36,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 105 transitions, 231 flow [2025-03-14 01:52:36,706 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:52:36,706 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;@41689c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:52:36,706 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-03-14 01:52:36,708 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:52:36,708 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-14 01:52:36,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:52:36,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:36,708 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:36,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2025-03-14 01:52:36,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:36,708 INFO L85 PathProgramCache]: Analyzing trace with hash 40828631, now seen corresponding path program 1 times [2025-03-14 01:52:36,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:36,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393411083] [2025-03-14 01:52:36,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:36,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:36,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 01:52:36,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:52:36,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:36,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:36,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:36,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:36,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393411083] [2025-03-14 01:52:36,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393411083] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:36,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:36,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:36,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667588503] [2025-03-14 01:52:36,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:36,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:36,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:36,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:36,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:36,766 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 180 [2025-03-14 01:52:36,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 105 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:36,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 180 [2025-03-14 01:52:36,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:36,815 INFO L124 PetriNetUnfolderBase]: 115/517 cut-off events. [2025-03-14 01:52:36,815 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-03-14 01:52:36,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 517 events. 115/517 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2359 event pairs, 110 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 384. Up to 207 conditions per place. [2025-03-14 01:52:36,818 INFO L140 encePairwiseOnDemand]: 175/180 looper letters, 17 selfloop transitions, 2 changer transitions 1/102 dead transitions. [2025-03-14 01:52:36,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 263 flow [2025-03-14 01:52:36,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2025-03-14 01:52:36,820 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8462962962962963 [2025-03-14 01:52:36,820 INFO L175 Difference]: Start difference. First operand has 111 places, 105 transitions, 231 flow. Second operand 3 states and 457 transitions. [2025-03-14 01:52:36,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 263 flow [2025-03-14 01:52:36,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 102 transitions, 260 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:36,822 INFO L231 Difference]: Finished difference. Result has 111 places, 101 transitions, 224 flow [2025-03-14 01:52:36,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=111, PETRI_TRANSITIONS=101} [2025-03-14 01:52:36,822 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, 0 predicate places. [2025-03-14 01:52:36,822 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 101 transitions, 224 flow [2025-03-14 01:52:36,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:36,823 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] [2025-03-14 01:52:36,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-14 01:52:36,823 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2025-03-14 01:52:36,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash 595671119, now seen corresponding path program 1 times [2025-03-14 01:52:36,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:36,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65943504] [2025-03-14 01:52:36,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:36,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:36,827 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:52:36,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:52:36,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:36,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:36,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:36,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65943504] [2025-03-14 01:52:36,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65943504] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:36,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:36,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:36,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491412656] [2025-03-14 01:52:36,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:36,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:36,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:36,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:36,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:36,869 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 180 [2025-03-14 01:52:36,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:36,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 180 [2025-03-14 01:52:36,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:36,922 INFO L124 PetriNetUnfolderBase]: 83/435 cut-off events. [2025-03-14 01:52:36,923 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2025-03-14 01:52:36,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 435 events. 83/435 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1875 event pairs, 78 based on Foata normal form. 15/420 useless extension candidates. Maximal degree in co-relation 626. Up to 159 conditions per place. [2025-03-14 01:52:36,926 INFO L140 encePairwiseOnDemand]: 174/180 looper letters, 15 selfloop transitions, 1 changer transitions 18/96 dead transitions. [2025-03-14 01:52:36,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 250 flow [2025-03-14 01:52:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2025-03-14 01:52:36,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8037037037037037 [2025-03-14 01:52:36,928 INFO L175 Difference]: Start difference. First operand has 111 places, 101 transitions, 224 flow. Second operand 3 states and 434 transitions. [2025-03-14 01:52:36,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 250 flow [2025-03-14 01:52:36,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 96 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:52:36,929 INFO L231 Difference]: Finished difference. Result has 105 places, 78 transitions, 174 flow [2025-03-14 01:52:36,930 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2025-03-14 01:52:36,930 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, -6 predicate places. [2025-03-14 01:52:36,931 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 174 flow [2025-03-14 01:52:36,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:36,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:36,932 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:36,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-14 01:52:36,932 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2025-03-14 01:52:36,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:36,932 INFO L85 PathProgramCache]: Analyzing trace with hash 641114357, now seen corresponding path program 1 times [2025-03-14 01:52:36,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:36,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449049339] [2025-03-14 01:52:36,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:36,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:36,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-14 01:52:36,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-14 01:52:36,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:36,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:37,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:37,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449049339] [2025-03-14 01:52:37,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449049339] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:37,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:37,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:52:37,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134424688] [2025-03-14 01:52:37,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:37,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:52:37,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:37,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:52:37,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:52:37,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 180 [2025-03-14 01:52:37,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 78 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:37,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:37,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 180 [2025-03-14 01:52:37,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:37,082 INFO L124 PetriNetUnfolderBase]: 61/332 cut-off events. [2025-03-14 01:52:37,082 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2025-03-14 01:52:37,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 332 events. 61/332 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1196 event pairs, 61 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 463. Up to 127 conditions per place. [2025-03-14 01:52:37,084 INFO L140 encePairwiseOnDemand]: 174/180 looper letters, 15 selfloop transitions, 2 changer transitions 10/82 dead transitions. [2025-03-14 01:52:37,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 82 transitions, 228 flow [2025-03-14 01:52:37,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:52:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:52:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 754 transitions. [2025-03-14 01:52:37,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8377777777777777 [2025-03-14 01:52:37,086 INFO L175 Difference]: Start difference. First operand has 105 places, 78 transitions, 174 flow. Second operand 5 states and 754 transitions. [2025-03-14 01:52:37,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 82 transitions, 228 flow [2025-03-14 01:52:37,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:37,087 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 169 flow [2025-03-14 01:52:37,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2025-03-14 01:52:37,088 INFO L279 CegarLoopForPetriNet]: 111 programPoint places, -20 predicate places. [2025-03-14 01:52:37,088 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 169 flow [2025-03-14 01:52:37,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:37,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:37,088 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:37,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-14 01:52:37,089 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2025-03-14 01:52:37,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:37,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1792904484, now seen corresponding path program 1 times [2025-03-14 01:52:37,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:37,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128586205] [2025-03-14 01:52:37,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:37,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:37,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-14 01:52:37,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-14 01:52:37,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:37,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:37,109 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:52:37,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-14 01:52:37,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-14 01:52:37,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:37,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:37,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:52:37,130 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:52:37,130 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2025-03-14 01:52:37,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2025-03-14 01:52:37,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2025-03-14 01:52:37,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2025-03-14 01:52:37,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2025-03-14 01:52:37,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2025-03-14 01:52:37,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 11 remaining) [2025-03-14 01:52:37,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2025-03-14 01:52:37,130 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2025-03-14 01:52:37,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2025-03-14 01:52:37,131 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2025-03-14 01:52:37,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-14 01:52:37,131 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-14 01:52:37,131 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:52:37,131 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-14 01:52:37,169 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:52:37,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 216 transitions, 488 flow [2025-03-14 01:52:37,188 INFO L124 PetriNetUnfolderBase]: 22/346 cut-off events. [2025-03-14 01:52:37,188 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-14 01:52:37,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 346 events. 22/346 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 870 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 370. Up to 10 conditions per place. [2025-03-14 01:52:37,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 216 transitions, 488 flow [2025-03-14 01:52:37,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 112 transitions, 255 flow [2025-03-14 01:52:37,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:52:37,190 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@41689c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:52:37,190 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-03-14 01:52:37,192 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:52:37,192 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-14 01:52:37,192 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:52:37,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:37,192 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:37,192 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-03-14 01:52:37,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash 335730391, now seen corresponding path program 1 times [2025-03-14 01:52:37,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:37,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646011059] [2025-03-14 01:52:37,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:37,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 01:52:37,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:52:37,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:37,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:37,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:37,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646011059] [2025-03-14 01:52:37,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646011059] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:37,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:37,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:37,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337068869] [2025-03-14 01:52:37,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:37,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:37,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:37,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:37,206 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:37,236 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 216 [2025-03-14 01:52:37,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 112 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 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) [2025-03-14 01:52:37,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:37,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 216 [2025-03-14 01:52:37,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:37,330 INFO L124 PetriNetUnfolderBase]: 316/1031 cut-off events. [2025-03-14 01:52:37,331 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2025-03-14 01:52:37,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1668 conditions, 1031 events. 316/1031 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5801 event pairs, 310 based on Foata normal form. 1/967 useless extension candidates. Maximal degree in co-relation 835. Up to 503 conditions per place. [2025-03-14 01:52:37,338 INFO L140 encePairwiseOnDemand]: 211/216 looper letters, 19 selfloop transitions, 2 changer transitions 1/109 dead transitions. [2025-03-14 01:52:37,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 109 transitions, 291 flow [2025-03-14 01:52:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2025-03-14 01:52:37,339 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8425925925925926 [2025-03-14 01:52:37,340 INFO L175 Difference]: Start difference. First operand has 120 places, 112 transitions, 255 flow. Second operand 3 states and 546 transitions. [2025-03-14 01:52:37,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 109 transitions, 291 flow [2025-03-14 01:52:37,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 109 transitions, 284 flow, removed 3 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:37,342 INFO L231 Difference]: Finished difference. Result has 120 places, 108 transitions, 244 flow [2025-03-14 01:52:37,342 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=120, PETRI_TRANSITIONS=108} [2025-03-14 01:52:37,343 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, 0 predicate places. [2025-03-14 01:52:37,343 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 108 transitions, 244 flow [2025-03-14 01:52:37,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 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) [2025-03-14 01:52:37,343 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:37,343 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] [2025-03-14 01:52:37,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-14 01:52:37,344 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-03-14 01:52:37,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash 399410767, now seen corresponding path program 1 times [2025-03-14 01:52:37,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:37,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629430360] [2025-03-14 01:52:37,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:37,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:37,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:52:37,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:52:37,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:37,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:37,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:37,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629430360] [2025-03-14 01:52:37,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629430360] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:37,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:37,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:37,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184587753] [2025-03-14 01:52:37,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:37,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:37,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:37,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:37,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:37,386 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 216 [2025-03-14 01:52:37,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 108 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:37,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:37,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 216 [2025-03-14 01:52:37,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:37,475 INFO L124 PetriNetUnfolderBase]: 236/853 cut-off events. [2025-03-14 01:52:37,476 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-03-14 01:52:37,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 853 events. 236/853 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4554 event pairs, 230 based on Foata normal form. 31/837 useless extension candidates. Maximal degree in co-relation 1332. Up to 391 conditions per place. [2025-03-14 01:52:37,480 INFO L140 encePairwiseOnDemand]: 210/216 looper letters, 17 selfloop transitions, 1 changer transitions 18/103 dead transitions. [2025-03-14 01:52:37,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 103 transitions, 274 flow [2025-03-14 01:52:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2025-03-14 01:52:37,482 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7978395061728395 [2025-03-14 01:52:37,482 INFO L175 Difference]: Start difference. First operand has 120 places, 108 transitions, 244 flow. Second operand 3 states and 517 transitions. [2025-03-14 01:52:37,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 103 transitions, 274 flow [2025-03-14 01:52:37,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 103 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:52:37,485 INFO L231 Difference]: Finished difference. Result has 114 places, 85 transitions, 194 flow [2025-03-14 01:52:37,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=114, PETRI_TRANSITIONS=85} [2025-03-14 01:52:37,486 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, -6 predicate places. [2025-03-14 01:52:37,486 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 85 transitions, 194 flow [2025-03-14 01:52:37,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:37,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:37,487 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:37,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-14 01:52:37,487 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-03-14 01:52:37,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1042922224, now seen corresponding path program 1 times [2025-03-14 01:52:37,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:37,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994118976] [2025-03-14 01:52:37,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:37,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:37,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-14 01:52:37,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-14 01:52:37,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:37,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:37,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:37,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:37,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994118976] [2025-03-14 01:52:37,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994118976] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:37,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:37,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:52:37,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151214385] [2025-03-14 01:52:37,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:37,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:52:37,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:37,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:52:37,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:52:37,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 216 [2025-03-14 01:52:37,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 85 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:37,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:37,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 216 [2025-03-14 01:52:37,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:37,715 INFO L124 PetriNetUnfolderBase]: 181/655 cut-off events. [2025-03-14 01:52:37,715 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-03-14 01:52:37,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024 conditions, 655 events. 181/655 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3082 event pairs, 181 based on Foata normal form. 1/651 useless extension candidates. Maximal degree in co-relation 994. Up to 311 conditions per place. [2025-03-14 01:52:37,718 INFO L140 encePairwiseOnDemand]: 210/216 looper letters, 17 selfloop transitions, 2 changer transitions 10/89 dead transitions. [2025-03-14 01:52:37,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 89 transitions, 252 flow [2025-03-14 01:52:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:52:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:52:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 906 transitions. [2025-03-14 01:52:37,720 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8388888888888889 [2025-03-14 01:52:37,720 INFO L175 Difference]: Start difference. First operand has 114 places, 85 transitions, 194 flow. Second operand 5 states and 906 transitions. [2025-03-14 01:52:37,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 89 transitions, 252 flow [2025-03-14 01:52:37,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 89 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:37,722 INFO L231 Difference]: Finished difference. Result has 100 places, 79 transitions, 189 flow [2025-03-14 01:52:37,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=189, PETRI_PLACES=100, PETRI_TRANSITIONS=79} [2025-03-14 01:52:37,722 INFO L279 CegarLoopForPetriNet]: 120 programPoint places, -20 predicate places. [2025-03-14 01:52:37,722 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 79 transitions, 189 flow [2025-03-14 01:52:37,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:37,723 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:37,723 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:37,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-14 01:52:37,723 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-03-14 01:52:37,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:37,724 INFO L85 PathProgramCache]: Analyzing trace with hash 604425183, now seen corresponding path program 1 times [2025-03-14 01:52:37,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:37,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824881045] [2025-03-14 01:52:37,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:37,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:37,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-14 01:52:37,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-14 01:52:37,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:37,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:37,737 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:52:37,739 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-14 01:52:37,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-14 01:52:37,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:37,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:37,751 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:52:37,751 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:52:37,751 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2025-03-14 01:52:37,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2025-03-14 01:52:37,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2025-03-14 01:52:37,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2025-03-14 01:52:37,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2025-03-14 01:52:37,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2025-03-14 01:52:37,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2025-03-14 01:52:37,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2025-03-14 01:52:37,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2025-03-14 01:52:37,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2025-03-14 01:52:37,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2025-03-14 01:52:37,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2025-03-14 01:52:37,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-14 01:52:37,752 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-14 01:52:37,753 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:52:37,753 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-14 01:52:37,785 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:52:37,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 252 transitions, 584 flow [2025-03-14 01:52:37,806 INFO L124 PetriNetUnfolderBase]: 26/409 cut-off events. [2025-03-14 01:52:37,807 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-14 01:52:37,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 409 events. 26/409 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1058 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 441. Up to 12 conditions per place. [2025-03-14 01:52:37,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 252 transitions, 584 flow [2025-03-14 01:52:37,809 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 119 transitions, 281 flow [2025-03-14 01:52:37,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:52:37,810 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;@41689c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:52:37,810 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-14 01:52:37,811 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:52:37,811 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-14 01:52:37,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:52:37,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:37,811 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:37,811 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-03-14 01:52:37,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:37,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1395610327, now seen corresponding path program 1 times [2025-03-14 01:52:37,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:37,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953945365] [2025-03-14 01:52:37,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:37,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:37,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 01:52:37,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:52:37,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:37,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:37,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:37,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953945365] [2025-03-14 01:52:37,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953945365] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:37,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:37,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:37,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231962821] [2025-03-14 01:52:37,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:37,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:37,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:37,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:37,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:37,868 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 252 [2025-03-14 01:52:37,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 119 transitions, 281 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:37,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:37,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 252 [2025-03-14 01:52:37,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:38,026 INFO L124 PetriNetUnfolderBase]: 813/2129 cut-off events. [2025-03-14 01:52:38,027 INFO L125 PetriNetUnfolderBase]: For 424/424 co-relation queries the response was YES. [2025-03-14 01:52:38,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3615 conditions, 2129 events. 813/2129 cut-off events. For 424/424 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 13797 event pairs, 806 based on Foata normal form. 1/2041 useless extension candidates. Maximal degree in co-relation 1830. Up to 1191 conditions per place. [2025-03-14 01:52:38,042 INFO L140 encePairwiseOnDemand]: 247/252 looper letters, 21 selfloop transitions, 2 changer transitions 1/116 dead transitions. [2025-03-14 01:52:38,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 116 transitions, 321 flow [2025-03-14 01:52:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:38,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2025-03-14 01:52:38,044 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.83994708994709 [2025-03-14 01:52:38,044 INFO L175 Difference]: Start difference. First operand has 129 places, 119 transitions, 281 flow. Second operand 3 states and 635 transitions. [2025-03-14 01:52:38,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 116 transitions, 321 flow [2025-03-14 01:52:38,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 116 transitions, 308 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:38,046 INFO L231 Difference]: Finished difference. Result has 129 places, 115 transitions, 264 flow [2025-03-14 01:52:38,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=129, PETRI_TRANSITIONS=115} [2025-03-14 01:52:38,047 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, 0 predicate places. [2025-03-14 01:52:38,047 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 115 transitions, 264 flow [2025-03-14 01:52:38,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:38,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:38,047 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] [2025-03-14 01:52:38,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-14 01:52:38,048 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-03-14 01:52:38,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:38,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1261215409, now seen corresponding path program 1 times [2025-03-14 01:52:38,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:38,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500331191] [2025-03-14 01:52:38,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:38,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:38,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:52:38,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:52:38,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:38,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:38,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:38,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500331191] [2025-03-14 01:52:38,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500331191] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:38,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:38,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:38,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495790974] [2025-03-14 01:52:38,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:38,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:38,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:38,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:38,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:38,090 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 252 [2025-03-14 01:52:38,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 115 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:38,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:38,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 252 [2025-03-14 01:52:38,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:38,222 INFO L124 PetriNetUnfolderBase]: 621/1743 cut-off events. [2025-03-14 01:52:38,222 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2025-03-14 01:52:38,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2907 conditions, 1743 events. 621/1743 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 10852 event pairs, 614 based on Foata normal form. 63/1738 useless extension candidates. Maximal degree in co-relation 2878. Up to 935 conditions per place. [2025-03-14 01:52:38,232 INFO L140 encePairwiseOnDemand]: 246/252 looper letters, 19 selfloop transitions, 1 changer transitions 18/110 dead transitions. [2025-03-14 01:52:38,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 110 transitions, 298 flow [2025-03-14 01:52:38,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:38,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 600 transitions. [2025-03-14 01:52:38,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2025-03-14 01:52:38,235 INFO L175 Difference]: Start difference. First operand has 129 places, 115 transitions, 264 flow. Second operand 3 states and 600 transitions. [2025-03-14 01:52:38,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 110 transitions, 298 flow [2025-03-14 01:52:38,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 110 transitions, 294 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:52:38,237 INFO L231 Difference]: Finished difference. Result has 123 places, 92 transitions, 214 flow [2025-03-14 01:52:38,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=123, PETRI_TRANSITIONS=92} [2025-03-14 01:52:38,237 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, -6 predicate places. [2025-03-14 01:52:38,237 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 92 transitions, 214 flow [2025-03-14 01:52:38,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.0) internal successors, (576), 3 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:38,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:38,238 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:38,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-14 01:52:38,238 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-03-14 01:52:38,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:38,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1092521876, now seen corresponding path program 1 times [2025-03-14 01:52:38,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:38,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625086491] [2025-03-14 01:52:38,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:38,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:38,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-03-14 01:52:38,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-03-14 01:52:38,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:38,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:38,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:38,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625086491] [2025-03-14 01:52:38,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625086491] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:38,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:38,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:52:38,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837594414] [2025-03-14 01:52:38,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:38,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:52:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:38,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:52:38,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:52:38,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 252 [2025-03-14 01:52:38,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 92 transitions, 214 flow. Second operand has 5 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:38,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:38,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 252 [2025-03-14 01:52:38,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:38,465 INFO L124 PetriNetUnfolderBase]: 485/1354 cut-off events. [2025-03-14 01:52:38,465 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2025-03-14 01:52:38,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 1354 events. 485/1354 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7665 event pairs, 485 based on Foata normal form. 1/1354 useless extension candidates. Maximal degree in co-relation 2173. Up to 743 conditions per place. [2025-03-14 01:52:38,472 INFO L140 encePairwiseOnDemand]: 246/252 looper letters, 19 selfloop transitions, 2 changer transitions 10/96 dead transitions. [2025-03-14 01:52:38,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 96 transitions, 276 flow [2025-03-14 01:52:38,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:52:38,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:52:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1058 transitions. [2025-03-14 01:52:38,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8396825396825397 [2025-03-14 01:52:38,475 INFO L175 Difference]: Start difference. First operand has 123 places, 92 transitions, 214 flow. Second operand 5 states and 1058 transitions. [2025-03-14 01:52:38,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 96 transitions, 276 flow [2025-03-14 01:52:38,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 96 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:38,476 INFO L231 Difference]: Finished difference. Result has 109 places, 86 transitions, 209 flow [2025-03-14 01:52:38,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=109, PETRI_TRANSITIONS=86} [2025-03-14 01:52:38,477 INFO L279 CegarLoopForPetriNet]: 129 programPoint places, -20 predicate places. [2025-03-14 01:52:38,477 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 86 transitions, 209 flow [2025-03-14 01:52:38,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:38,477 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:38,478 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:38,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-14 01:52:38,478 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2025-03-14 01:52:38,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:38,478 INFO L85 PathProgramCache]: Analyzing trace with hash -888678617, now seen corresponding path program 1 times [2025-03-14 01:52:38,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:38,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163665857] [2025-03-14 01:52:38,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:38,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:38,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-14 01:52:38,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-14 01:52:38,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:38,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:38,491 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:52:38,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-14 01:52:38,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-14 01:52:38,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:38,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:38,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:52:38,504 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2025-03-14 01:52:38,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2025-03-14 01:52:38,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-14 01:52:38,506 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-14 01:52:38,506 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:52:38,506 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-03-14 01:52:38,537 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:52:38,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 288 transitions, 684 flow [2025-03-14 01:52:38,562 INFO L124 PetriNetUnfolderBase]: 30/472 cut-off events. [2025-03-14 01:52:38,562 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-03-14 01:52:38,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 472 events. 30/472 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1223 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 513. Up to 14 conditions per place. [2025-03-14 01:52:38,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 288 transitions, 684 flow [2025-03-14 01:52:38,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 126 transitions, 309 flow [2025-03-14 01:52:38,565 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:52:38,566 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;@41689c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:52:38,566 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-03-14 01:52:38,567 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:52:38,567 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-14 01:52:38,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:52:38,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:38,567 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:38,567 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2025-03-14 01:52:38,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:38,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1074498857, now seen corresponding path program 1 times [2025-03-14 01:52:38,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:38,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528904202] [2025-03-14 01:52:38,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:38,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:38,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 01:52:38,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:52:38,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:38,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:38,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:38,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528904202] [2025-03-14 01:52:38,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528904202] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:38,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:38,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702864544] [2025-03-14 01:52:38,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:38,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:38,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:38,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:38,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:38,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 288 [2025-03-14 01:52:38,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 126 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:38,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:38,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 288 [2025-03-14 01:52:38,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:39,050 INFO L124 PetriNetUnfolderBase]: 1998/4491 cut-off events. [2025-03-14 01:52:39,051 INFO L125 PetriNetUnfolderBase]: For 1165/1165 co-relation queries the response was YES. [2025-03-14 01:52:39,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7898 conditions, 4491 events. 1998/4491 cut-off events. For 1165/1165 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 31859 event pairs, 1990 based on Foata normal form. 1/4375 useless extension candidates. Maximal degree in co-relation 4009. Up to 2759 conditions per place. [2025-03-14 01:52:39,086 INFO L140 encePairwiseOnDemand]: 283/288 looper letters, 23 selfloop transitions, 2 changer transitions 1/123 dead transitions. [2025-03-14 01:52:39,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 123 transitions, 353 flow [2025-03-14 01:52:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:39,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2025-03-14 01:52:39,088 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8379629629629629 [2025-03-14 01:52:39,088 INFO L175 Difference]: Start difference. First operand has 138 places, 126 transitions, 309 flow. Second operand 3 states and 724 transitions. [2025-03-14 01:52:39,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 123 transitions, 353 flow [2025-03-14 01:52:39,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 123 transitions, 332 flow, removed 10 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:39,091 INFO L231 Difference]: Finished difference. Result has 138 places, 122 transitions, 284 flow [2025-03-14 01:52:39,091 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=284, PETRI_PLACES=138, PETRI_TRANSITIONS=122} [2025-03-14 01:52:39,091 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, 0 predicate places. [2025-03-14 01:52:39,092 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 122 transitions, 284 flow [2025-03-14 01:52:39,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:39,092 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:39,092 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] [2025-03-14 01:52:39,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-14 01:52:39,092 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2025-03-14 01:52:39,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash -91240113, now seen corresponding path program 1 times [2025-03-14 01:52:39,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:39,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84973842] [2025-03-14 01:52:39,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:39,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:39,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:52:39,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:52:39,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:39,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:39,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:39,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84973842] [2025-03-14 01:52:39,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84973842] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:39,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:39,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:39,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421372113] [2025-03-14 01:52:39,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:39,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:39,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:39,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:39,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:39,134 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 288 [2025-03-14 01:52:39,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 122 transitions, 284 flow. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:39,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:39,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 288 [2025-03-14 01:52:39,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:39,496 INFO L124 PetriNetUnfolderBase]: 1550/3657 cut-off events. [2025-03-14 01:52:39,497 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2025-03-14 01:52:39,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6294 conditions, 3657 events. 1550/3657 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 25099 event pairs, 1542 based on Foata normal form. 127/3691 useless extension candidates. Maximal degree in co-relation 6264. Up to 2183 conditions per place. [2025-03-14 01:52:39,513 INFO L140 encePairwiseOnDemand]: 282/288 looper letters, 21 selfloop transitions, 1 changer transitions 18/117 dead transitions. [2025-03-14 01:52:39,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 117 transitions, 322 flow [2025-03-14 01:52:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2025-03-14 01:52:39,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7905092592592593 [2025-03-14 01:52:39,515 INFO L175 Difference]: Start difference. First operand has 138 places, 122 transitions, 284 flow. Second operand 3 states and 683 transitions. [2025-03-14 01:52:39,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 117 transitions, 322 flow [2025-03-14 01:52:39,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 117 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:52:39,516 INFO L231 Difference]: Finished difference. Result has 132 places, 99 transitions, 234 flow [2025-03-14 01:52:39,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=132, PETRI_TRANSITIONS=99} [2025-03-14 01:52:39,518 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, -6 predicate places. [2025-03-14 01:52:39,518 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 99 transitions, 234 flow [2025-03-14 01:52:39,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:39,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:39,519 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:39,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-14 01:52:39,519 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2025-03-14 01:52:39,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:39,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1171344959, now seen corresponding path program 1 times [2025-03-14 01:52:39,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:39,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555088915] [2025-03-14 01:52:39,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:39,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:39,527 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 125 statements into 1 equivalence classes. [2025-03-14 01:52:39,531 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 125 of 125 statements. [2025-03-14 01:52:39,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:39,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:39,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:39,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:39,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555088915] [2025-03-14 01:52:39,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555088915] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:39,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:39,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:52:39,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162239648] [2025-03-14 01:52:39,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:39,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:52:39,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:39,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:52:39,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:52:39,756 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 288 [2025-03-14 01:52:39,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 99 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 239.4) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:39,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:39,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 288 [2025-03-14 01:52:39,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:40,043 INFO L124 PetriNetUnfolderBase]: 1221/2869 cut-off events. [2025-03-14 01:52:40,043 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2025-03-14 01:52:40,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4808 conditions, 2869 events. 1221/2869 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 18278 event pairs, 1221 based on Foata normal form. 1/2869 useless extension candidates. Maximal degree in co-relation 4776. Up to 1735 conditions per place. [2025-03-14 01:52:40,061 INFO L140 encePairwiseOnDemand]: 282/288 looper letters, 21 selfloop transitions, 2 changer transitions 10/103 dead transitions. [2025-03-14 01:52:40,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 103 transitions, 300 flow [2025-03-14 01:52:40,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:52:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:52:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1210 transitions. [2025-03-14 01:52:40,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8402777777777778 [2025-03-14 01:52:40,064 INFO L175 Difference]: Start difference. First operand has 132 places, 99 transitions, 234 flow. Second operand 5 states and 1210 transitions. [2025-03-14 01:52:40,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 103 transitions, 300 flow [2025-03-14 01:52:40,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 103 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:40,066 INFO L231 Difference]: Finished difference. Result has 118 places, 93 transitions, 229 flow [2025-03-14 01:52:40,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=118, PETRI_TRANSITIONS=93} [2025-03-14 01:52:40,066 INFO L279 CegarLoopForPetriNet]: 138 programPoint places, -20 predicate places. [2025-03-14 01:52:40,066 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 93 transitions, 229 flow [2025-03-14 01:52:40,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 239.4) internal successors, (1197), 5 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:40,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:40,067 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:40,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-14 01:52:40,067 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2025-03-14 01:52:40,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash 394097396, now seen corresponding path program 1 times [2025-03-14 01:52:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:40,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856368983] [2025-03-14 01:52:40,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:40,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:40,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-14 01:52:40,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-14 01:52:40,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:40,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:40,085 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:52:40,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-03-14 01:52:40,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-03-14 01:52:40,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:40,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:40,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:52:40,104 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:52:40,104 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2025-03-14 01:52:40,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2025-03-14 01:52:40,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2025-03-14 01:52:40,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2025-03-14 01:52:40,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2025-03-14 01:52:40,107 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2025-03-14 01:52:40,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 14 remaining) [2025-03-14 01:52:40,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2025-03-14 01:52:40,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2025-03-14 01:52:40,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2025-03-14 01:52:40,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2025-03-14 01:52:40,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2025-03-14 01:52:40,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2025-03-14 01:52:40,108 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2025-03-14 01:52:40,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-14 01:52:40,108 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-14 01:52:40,108 WARN L246 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:52:40,108 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2025-03-14 01:52:40,148 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:52:40,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 324 transitions, 788 flow [2025-03-14 01:52:40,179 INFO L124 PetriNetUnfolderBase]: 34/535 cut-off events. [2025-03-14 01:52:40,179 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-03-14 01:52:40,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 535 events. 34/535 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1452 event pairs, 0 based on Foata normal form. 0/473 useless extension candidates. Maximal degree in co-relation 586. Up to 16 conditions per place. [2025-03-14 01:52:40,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 324 transitions, 788 flow [2025-03-14 01:52:40,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 133 transitions, 339 flow [2025-03-14 01:52:40,184 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:52:40,186 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;@41689c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:52:40,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-03-14 01:52:40,187 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:52:40,187 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-14 01:52:40,187 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:52:40,187 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:40,187 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:40,188 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2025-03-14 01:52:40,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1515337431, now seen corresponding path program 1 times [2025-03-14 01:52:40,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:40,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750199931] [2025-03-14 01:52:40,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:40,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:40,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 01:52:40,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:52:40,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:40,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:40,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:40,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750199931] [2025-03-14 01:52:40,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750199931] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:40,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:40,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:40,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013207623] [2025-03-14 01:52:40,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:40,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:40,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:40,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:40,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:40,235 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 324 [2025-03-14 01:52:40,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 133 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:40,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:40,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 324 [2025-03-14 01:52:40,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:41,224 INFO L124 PetriNetUnfolderBase]: 4751/9573 cut-off events. [2025-03-14 01:52:41,225 INFO L125 PetriNetUnfolderBase]: For 3091/3091 co-relation queries the response was YES. [2025-03-14 01:52:41,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17269 conditions, 9573 events. 4751/9573 cut-off events. For 3091/3091 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 72816 event pairs, 4742 based on Foata normal form. 1/9425 useless extension candidates. Maximal degree in co-relation 8748. Up to 6279 conditions per place. [2025-03-14 01:52:41,293 INFO L140 encePairwiseOnDemand]: 319/324 looper letters, 25 selfloop transitions, 2 changer transitions 1/130 dead transitions. [2025-03-14 01:52:41,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 130 transitions, 387 flow [2025-03-14 01:52:41,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 813 transitions. [2025-03-14 01:52:41,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8364197530864198 [2025-03-14 01:52:41,295 INFO L175 Difference]: Start difference. First operand has 147 places, 133 transitions, 339 flow. Second operand 3 states and 813 transitions. [2025-03-14 01:52:41,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 130 transitions, 387 flow [2025-03-14 01:52:41,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 130 transitions, 356 flow, removed 15 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:41,299 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 304 flow [2025-03-14 01:52:41,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2025-03-14 01:52:41,300 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, 0 predicate places. [2025-03-14 01:52:41,300 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 304 flow [2025-03-14 01:52:41,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:41,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:41,301 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] [2025-03-14 01:52:41,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-14 01:52:41,301 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2025-03-14 01:52:41,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash -385630641, now seen corresponding path program 1 times [2025-03-14 01:52:41,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:41,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637880596] [2025-03-14 01:52:41,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:41,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:41,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:52:41,310 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:52:41,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:41,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:41,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:41,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:41,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637880596] [2025-03-14 01:52:41,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637880596] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:41,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:41,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:41,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654295651] [2025-03-14 01:52:41,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:41,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:41,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:41,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:41,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:41,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 324 [2025-03-14 01:52:41,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:41,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:41,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 324 [2025-03-14 01:52:41,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:42,398 INFO L124 PetriNetUnfolderBase]: 3727/7779 cut-off events. [2025-03-14 01:52:42,398 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2025-03-14 01:52:42,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13681 conditions, 7779 events. 3727/7779 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 57280 event pairs, 3718 based on Foata normal form. 255/7912 useless extension candidates. Maximal degree in co-relation 13650. Up to 4999 conditions per place. [2025-03-14 01:52:42,462 INFO L140 encePairwiseOnDemand]: 318/324 looper letters, 23 selfloop transitions, 1 changer transitions 18/124 dead transitions. [2025-03-14 01:52:42,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 124 transitions, 346 flow [2025-03-14 01:52:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2025-03-14 01:52:42,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7880658436213992 [2025-03-14 01:52:42,465 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 304 flow. Second operand 3 states and 766 transitions. [2025-03-14 01:52:42,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 124 transitions, 346 flow [2025-03-14 01:52:42,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 124 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:52:42,467 INFO L231 Difference]: Finished difference. Result has 141 places, 106 transitions, 254 flow [2025-03-14 01:52:42,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=141, PETRI_TRANSITIONS=106} [2025-03-14 01:52:42,468 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, -6 predicate places. [2025-03-14 01:52:42,468 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 106 transitions, 254 flow [2025-03-14 01:52:42,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:42,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:42,469 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:42,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-14 01:52:42,469 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2025-03-14 01:52:42,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:42,470 INFO L85 PathProgramCache]: Analyzing trace with hash 107883735, now seen corresponding path program 1 times [2025-03-14 01:52:42,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:42,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896785373] [2025-03-14 01:52:42,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:42,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:42,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 139 statements into 1 equivalence classes. [2025-03-14 01:52:42,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 139 of 139 statements. [2025-03-14 01:52:42,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:42,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:42,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:42,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896785373] [2025-03-14 01:52:42,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896785373] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:42,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:42,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:52:42,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475645010] [2025-03-14 01:52:42,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:42,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:52:42,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:42,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:52:42,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:52:42,651 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 324 [2025-03-14 01:52:42,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 106 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 269.6) internal successors, (1348), 5 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:42,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:42,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 324 [2025-03-14 01:52:42,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:43,328 INFO L124 PetriNetUnfolderBase]: 2949/6144 cut-off events. [2025-03-14 01:52:43,328 INFO L125 PetriNetUnfolderBase]: For 400/400 co-relation queries the response was YES. [2025-03-14 01:52:43,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10516 conditions, 6144 events. 2949/6144 cut-off events. For 400/400 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 42775 event pairs, 2949 based on Foata normal form. 1/6137 useless extension candidates. Maximal degree in co-relation 10483. Up to 3975 conditions per place. [2025-03-14 01:52:43,370 INFO L140 encePairwiseOnDemand]: 318/324 looper letters, 23 selfloop transitions, 2 changer transitions 10/110 dead transitions. [2025-03-14 01:52:43,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 110 transitions, 324 flow [2025-03-14 01:52:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:52:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:52:43,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1362 transitions. [2025-03-14 01:52:43,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8407407407407408 [2025-03-14 01:52:43,373 INFO L175 Difference]: Start difference. First operand has 141 places, 106 transitions, 254 flow. Second operand 5 states and 1362 transitions. [2025-03-14 01:52:43,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 110 transitions, 324 flow [2025-03-14 01:52:43,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 110 transitions, 323 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:43,375 INFO L231 Difference]: Finished difference. Result has 127 places, 100 transitions, 249 flow [2025-03-14 01:52:43,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=127, PETRI_TRANSITIONS=100} [2025-03-14 01:52:43,376 INFO L279 CegarLoopForPetriNet]: 147 programPoint places, -20 predicate places. [2025-03-14 01:52:43,376 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 100 transitions, 249 flow [2025-03-14 01:52:43,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.6) internal successors, (1348), 5 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:43,376 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:43,376 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:43,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-14 01:52:43,377 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2025-03-14 01:52:43,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:43,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1922937466, now seen corresponding path program 1 times [2025-03-14 01:52:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:43,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375731168] [2025-03-14 01:52:43,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:43,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:43,386 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-14 01:52:43,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-14 01:52:43,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:43,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:43,394 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:52:43,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 142 statements into 1 equivalence classes. [2025-03-14 01:52:43,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 142 of 142 statements. [2025-03-14 01:52:43,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:43,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:43,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:52:43,414 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:52:43,414 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2025-03-14 01:52:43,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2025-03-14 01:52:43,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2025-03-14 01:52:43,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2025-03-14 01:52:43,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2025-03-14 01:52:43,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2025-03-14 01:52:43,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 15 remaining) [2025-03-14 01:52:43,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2025-03-14 01:52:43,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2025-03-14 01:52:43,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2025-03-14 01:52:43,414 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2025-03-14 01:52:43,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2025-03-14 01:52:43,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2025-03-14 01:52:43,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2025-03-14 01:52:43,415 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2025-03-14 01:52:43,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-14 01:52:43,415 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-14 01:52:43,415 WARN L246 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:52:43,415 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2025-03-14 01:52:43,486 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:52:43,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 360 transitions, 896 flow [2025-03-14 01:52:43,551 INFO L124 PetriNetUnfolderBase]: 38/598 cut-off events. [2025-03-14 01:52:43,551 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2025-03-14 01:52:43,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 598 events. 38/598 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 1587 event pairs, 0 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 660. Up to 18 conditions per place. [2025-03-14 01:52:43,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 360 transitions, 896 flow [2025-03-14 01:52:43,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 140 transitions, 371 flow [2025-03-14 01:52:43,557 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:52:43,557 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;@41689c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:52:43,557 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-03-14 01:52:43,559 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:52:43,559 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2025-03-14 01:52:43,559 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:52:43,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:43,559 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:43,559 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-14 01:52:43,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:43,560 INFO L85 PathProgramCache]: Analyzing trace with hash 575184599, now seen corresponding path program 1 times [2025-03-14 01:52:43,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:43,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335286035] [2025-03-14 01:52:43,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:43,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:43,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 01:52:43,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:52:43,567 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:43,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:43,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335286035] [2025-03-14 01:52:43,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335286035] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:43,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:43,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:43,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896207209] [2025-03-14 01:52:43,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:43,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:43,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:43,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:43,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:43,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 360 [2025-03-14 01:52:43,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 371 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:43,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:43,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 360 [2025-03-14 01:52:43,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:45,614 INFO L124 PetriNetUnfolderBase]: 11024/20479 cut-off events. [2025-03-14 01:52:45,614 INFO L125 PetriNetUnfolderBase]: For 7962/7962 co-relation queries the response was YES. [2025-03-14 01:52:45,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37648 conditions, 20479 events. 11024/20479 cut-off events. For 7962/7962 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 164178 event pairs, 11014 based on Foata normal form. 1/20295 useless extension candidates. Maximal degree in co-relation 18991. Up to 14087 conditions per place. [2025-03-14 01:52:45,749 INFO L140 encePairwiseOnDemand]: 355/360 looper letters, 27 selfloop transitions, 2 changer transitions 1/137 dead transitions. [2025-03-14 01:52:45,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 137 transitions, 423 flow [2025-03-14 01:52:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 902 transitions. [2025-03-14 01:52:45,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8351851851851851 [2025-03-14 01:52:45,751 INFO L175 Difference]: Start difference. First operand has 156 places, 140 transitions, 371 flow. Second operand 3 states and 902 transitions. [2025-03-14 01:52:45,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 137 transitions, 423 flow [2025-03-14 01:52:45,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 137 transitions, 380 flow, removed 21 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:45,755 INFO L231 Difference]: Finished difference. Result has 156 places, 136 transitions, 324 flow [2025-03-14 01:52:45,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=156, PETRI_TRANSITIONS=136} [2025-03-14 01:52:45,755 INFO L279 CegarLoopForPetriNet]: 156 programPoint places, 0 predicate places. [2025-03-14 01:52:45,755 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 136 transitions, 324 flow [2025-03-14 01:52:45,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:45,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:45,756 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] [2025-03-14 01:52:45,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-14 01:52:45,756 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-14 01:52:45,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:45,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2144386993, now seen corresponding path program 1 times [2025-03-14 01:52:45,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:45,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149990065] [2025-03-14 01:52:45,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:45,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:45,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:52:45,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:52:45,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:45,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:45,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:45,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149990065] [2025-03-14 01:52:45,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149990065] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:45,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:45,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:45,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472058668] [2025-03-14 01:52:45,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:45,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:45,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:45,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:45,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:45,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 360 [2025-03-14 01:52:45,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 136 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:45,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:45,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 360 [2025-03-14 01:52:45,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:47,611 INFO L124 PetriNetUnfolderBase]: 8720/16637 cut-off events. [2025-03-14 01:52:47,611 INFO L125 PetriNetUnfolderBase]: For 792/792 co-relation queries the response was YES. [2025-03-14 01:52:47,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29708 conditions, 16637 events. 8720/16637 cut-off events. For 792/792 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 129792 event pairs, 8710 based on Foata normal form. 511/16993 useless extension candidates. Maximal degree in co-relation 29676. Up to 11271 conditions per place. [2025-03-14 01:52:47,687 INFO L140 encePairwiseOnDemand]: 354/360 looper letters, 25 selfloop transitions, 1 changer transitions 18/131 dead transitions. [2025-03-14 01:52:47,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 131 transitions, 370 flow [2025-03-14 01:52:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 849 transitions. [2025-03-14 01:52:47,689 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7861111111111111 [2025-03-14 01:52:47,689 INFO L175 Difference]: Start difference. First operand has 156 places, 136 transitions, 324 flow. Second operand 3 states and 849 transitions. [2025-03-14 01:52:47,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 131 transitions, 370 flow [2025-03-14 01:52:47,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 131 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:52:47,691 INFO L231 Difference]: Finished difference. Result has 150 places, 113 transitions, 274 flow [2025-03-14 01:52:47,691 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=150, PETRI_TRANSITIONS=113} [2025-03-14 01:52:47,692 INFO L279 CegarLoopForPetriNet]: 156 programPoint places, -6 predicate places. [2025-03-14 01:52:47,692 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 113 transitions, 274 flow [2025-03-14 01:52:47,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:47,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:47,692 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:47,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-14 01:52:47,693 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-14 01:52:47,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:47,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1814614550, now seen corresponding path program 1 times [2025-03-14 01:52:47,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:47,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233691932] [2025-03-14 01:52:47,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:47,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:47,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-14 01:52:47,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-14 01:52:47,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:47,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:47,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:47,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:47,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233691932] [2025-03-14 01:52:47,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233691932] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:47,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:47,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:52:47,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200326983] [2025-03-14 01:52:47,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:47,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:52:47,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:47,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:52:47,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:52:47,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 360 [2025-03-14 01:52:47,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 113 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 299.8) internal successors, (1499), 5 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:47,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:47,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 360 [2025-03-14 01:52:47,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:48,790 INFO L124 PetriNetUnfolderBase]: 6917/13195 cut-off events. [2025-03-14 01:52:48,790 INFO L125 PetriNetUnfolderBase]: For 791/791 co-relation queries the response was YES. [2025-03-14 01:52:48,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22944 conditions, 13195 events. 6917/13195 cut-off events. For 791/791 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 98188 event pairs, 6917 based on Foata normal form. 1/13187 useless extension candidates. Maximal degree in co-relation 22910. Up to 8967 conditions per place. [2025-03-14 01:52:48,876 INFO L140 encePairwiseOnDemand]: 354/360 looper letters, 25 selfloop transitions, 2 changer transitions 10/117 dead transitions. [2025-03-14 01:52:48,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 117 transitions, 348 flow [2025-03-14 01:52:48,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:52:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:52:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1514 transitions. [2025-03-14 01:52:48,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8411111111111111 [2025-03-14 01:52:48,878 INFO L175 Difference]: Start difference. First operand has 150 places, 113 transitions, 274 flow. Second operand 5 states and 1514 transitions. [2025-03-14 01:52:48,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 117 transitions, 348 flow [2025-03-14 01:52:48,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 117 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:48,880 INFO L231 Difference]: Finished difference. Result has 136 places, 107 transitions, 269 flow [2025-03-14 01:52:48,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=136, PETRI_TRANSITIONS=107} [2025-03-14 01:52:48,880 INFO L279 CegarLoopForPetriNet]: 156 programPoint places, -20 predicate places. [2025-03-14 01:52:48,880 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 107 transitions, 269 flow [2025-03-14 01:52:48,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 299.8) internal successors, (1499), 5 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:48,882 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:48,882 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:48,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-14 01:52:48,882 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-14 01:52:48,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:48,883 INFO L85 PathProgramCache]: Analyzing trace with hash -397417187, now seen corresponding path program 1 times [2025-03-14 01:52:48,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:48,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525508577] [2025-03-14 01:52:48,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:48,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:48,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-14 01:52:48,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-14 01:52:48,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:48,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:48,898 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:52:48,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-03-14 01:52:48,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-03-14 01:52:48,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:48,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:52:48,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:52:48,921 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:52:48,921 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2025-03-14 01:52:48,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2025-03-14 01:52:48,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2025-03-14 01:52:48,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2025-03-14 01:52:48,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2025-03-14 01:52:48,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2025-03-14 01:52:48,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2025-03-14 01:52:48,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2025-03-14 01:52:48,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2025-03-14 01:52:48,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2025-03-14 01:52:48,921 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2025-03-14 01:52:48,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2025-03-14 01:52:48,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2025-03-14 01:52:48,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2025-03-14 01:52:48,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2025-03-14 01:52:48,922 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2025-03-14 01:52:48,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-14 01:52:48,923 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-14 01:52:48,923 WARN L246 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:52:48,923 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2025-03-14 01:52:48,966 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:52:48,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 404 places, 396 transitions, 1008 flow [2025-03-14 01:52:49,163 INFO L124 PetriNetUnfolderBase]: 42/661 cut-off events. [2025-03-14 01:52:49,164 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2025-03-14 01:52:49,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 661 events. 42/661 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1800 event pairs, 0 based on Foata normal form. 0/585 useless extension candidates. Maximal degree in co-relation 735. Up to 20 conditions per place. [2025-03-14 01:52:49,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 404 places, 396 transitions, 1008 flow [2025-03-14 01:52:49,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 147 transitions, 405 flow [2025-03-14 01:52:49,167 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:52:49,168 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;@41689c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:52:49,168 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-03-14 01:52:49,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:52:49,170 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-14 01:52:49,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:52:49,170 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:49,170 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:49,170 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2025-03-14 01:52:49,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:49,170 INFO L85 PathProgramCache]: Analyzing trace with hash 400009943, now seen corresponding path program 1 times [2025-03-14 01:52:49,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:49,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006644756] [2025-03-14 01:52:49,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:49,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:49,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 01:52:49,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:52:49,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:49,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:49,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:49,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006644756] [2025-03-14 01:52:49,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006644756] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:49,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:49,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:49,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110629481] [2025-03-14 01:52:49,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:49,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:49,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:49,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:49,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:49,232 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 396 [2025-03-14 01:52:49,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 147 transitions, 405 flow. Second operand has 3 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:49,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:49,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 396 [2025-03-14 01:52:49,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:53,717 INFO L124 PetriNetUnfolderBase]: 25105/43801 cut-off events. [2025-03-14 01:52:53,717 INFO L125 PetriNetUnfolderBase]: For 20002/20002 co-relation queries the response was YES. [2025-03-14 01:52:53,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81707 conditions, 43801 events. 25105/43801 cut-off events. For 20002/20002 co-relation queries the response was YES. Maximal size of possible extension queue 1231. Compared 366626 event pairs, 25094 based on Foata normal form. 1/43577 useless extension candidates. Maximal degree in co-relation 41010. Up to 31239 conditions per place. [2025-03-14 01:52:54,135 INFO L140 encePairwiseOnDemand]: 391/396 looper letters, 29 selfloop transitions, 2 changer transitions 1/144 dead transitions. [2025-03-14 01:52:54,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 144 transitions, 461 flow [2025-03-14 01:52:54,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:54,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:54,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 991 transitions. [2025-03-14 01:52:54,137 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8341750841750841 [2025-03-14 01:52:54,137 INFO L175 Difference]: Start difference. First operand has 165 places, 147 transitions, 405 flow. Second operand 3 states and 991 transitions. [2025-03-14 01:52:54,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 144 transitions, 461 flow [2025-03-14 01:52:54,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 144 transitions, 404 flow, removed 28 selfloop flow, removed 1 redundant places. [2025-03-14 01:52:54,143 INFO L231 Difference]: Finished difference. Result has 165 places, 143 transitions, 344 flow [2025-03-14 01:52:54,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=165, PETRI_TRANSITIONS=143} [2025-03-14 01:52:54,143 INFO L279 CegarLoopForPetriNet]: 165 programPoint places, 0 predicate places. [2025-03-14 01:52:54,143 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 143 transitions, 344 flow [2025-03-14 01:52:54,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:54,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:54,143 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] [2025-03-14 01:52:54,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-14 01:52:54,144 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2025-03-14 01:52:54,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1072541873, now seen corresponding path program 1 times [2025-03-14 01:52:54,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:54,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398193164] [2025-03-14 01:52:54,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:54,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:54,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-14 01:52:54,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-14 01:52:54,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:54,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:54,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398193164] [2025-03-14 01:52:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398193164] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:54,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:54,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:52:54,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548314455] [2025-03-14 01:52:54,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:54,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:52:54,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:54,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:52:54,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:52:54,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 396 [2025-03-14 01:52:54,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 143 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:54,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:54,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 396 [2025-03-14 01:52:54,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:52:58,013 INFO L124 PetriNetUnfolderBase]: 19985/35607 cut-off events. [2025-03-14 01:52:58,013 INFO L125 PetriNetUnfolderBase]: For 1568/1568 co-relation queries the response was YES. [2025-03-14 01:52:58,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64295 conditions, 35607 events. 19985/35607 cut-off events. For 1568/1568 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 290893 event pairs, 19974 based on Foata normal form. 1023/36438 useless extension candidates. Maximal degree in co-relation 64262. Up to 25095 conditions per place. [2025-03-14 01:52:58,244 INFO L140 encePairwiseOnDemand]: 390/396 looper letters, 27 selfloop transitions, 1 changer transitions 18/138 dead transitions. [2025-03-14 01:52:58,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 138 transitions, 394 flow [2025-03-14 01:52:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-14 01:52:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-14 01:52:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 932 transitions. [2025-03-14 01:52:58,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7845117845117845 [2025-03-14 01:52:58,247 INFO L175 Difference]: Start difference. First operand has 165 places, 143 transitions, 344 flow. Second operand 3 states and 932 transitions. [2025-03-14 01:52:58,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 138 transitions, 394 flow [2025-03-14 01:52:58,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 138 transitions, 390 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-14 01:52:58,250 INFO L231 Difference]: Finished difference. Result has 159 places, 120 transitions, 294 flow [2025-03-14 01:52:58,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=159, PETRI_TRANSITIONS=120} [2025-03-14 01:52:58,250 INFO L279 CegarLoopForPetriNet]: 165 programPoint places, -6 predicate places. [2025-03-14 01:52:58,250 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 120 transitions, 294 flow [2025-03-14 01:52:58,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:58,251 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:52:58,251 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:52:58,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-14 01:52:58,251 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2025-03-14 01:52:58,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:52:58,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1557478722, now seen corresponding path program 1 times [2025-03-14 01:52:58,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:52:58,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625798494] [2025-03-14 01:52:58,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:52:58,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:52:58,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-14 01:52:58,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-14 01:52:58,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:52:58,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:52:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:52:58,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:52:58,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625798494] [2025-03-14 01:52:58,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625798494] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:52:58,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:52:58,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-14 01:52:58,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047461434] [2025-03-14 01:52:58,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:52:58,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-14 01:52:58,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:52:58,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-14 01:52:58,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-14 01:52:58,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 396 [2025-03-14 01:52:58,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 120 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:52:58,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:52:58,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 396 [2025-03-14 01:52:58,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-14 01:53:01,210 INFO L124 PetriNetUnfolderBase]: 15877/28310 cut-off events. [2025-03-14 01:53:01,211 INFO L125 PetriNetUnfolderBase]: For 1567/1567 co-relation queries the response was YES. [2025-03-14 01:53:01,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49836 conditions, 28310 events. 15877/28310 cut-off events. For 1567/1567 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 221157 event pairs, 15877 based on Foata normal form. 1/28301 useless extension candidates. Maximal degree in co-relation 49801. Up to 19975 conditions per place. [2025-03-14 01:53:01,364 INFO L140 encePairwiseOnDemand]: 390/396 looper letters, 27 selfloop transitions, 2 changer transitions 10/124 dead transitions. [2025-03-14 01:53:01,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 124 transitions, 372 flow [2025-03-14 01:53:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-14 01:53:01,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-14 01:53:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1666 transitions. [2025-03-14 01:53:01,366 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8414141414141414 [2025-03-14 01:53:01,366 INFO L175 Difference]: Start difference. First operand has 159 places, 120 transitions, 294 flow. Second operand 5 states and 1666 transitions. [2025-03-14 01:53:01,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 124 transitions, 372 flow [2025-03-14 01:53:01,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 124 transitions, 371 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-14 01:53:01,368 INFO L231 Difference]: Finished difference. Result has 145 places, 114 transitions, 289 flow [2025-03-14 01:53:01,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=145, PETRI_TRANSITIONS=114} [2025-03-14 01:53:01,368 INFO L279 CegarLoopForPetriNet]: 165 programPoint places, -20 predicate places. [2025-03-14 01:53:01,368 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 114 transitions, 289 flow [2025-03-14 01:53:01,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 330.0) internal successors, (1650), 5 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:53:01,369 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:53:01,369 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:53:01,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-03-14 01:53:01,369 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2025-03-14 01:53:01,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:53:01,370 INFO L85 PathProgramCache]: Analyzing trace with hash 461015033, now seen corresponding path program 1 times [2025-03-14 01:53:01,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:53:01,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360094188] [2025-03-14 01:53:01,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:53:01,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:53:01,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-14 01:53:01,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-14 01:53:01,383 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:53:01,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:53:01,383 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-14 01:53:01,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-14 01:53:01,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-14 01:53:01,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:53:01,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-14 01:53:01,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-14 01:53:01,399 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-14 01:53:01,399 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-03-14 01:53:01,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2025-03-14 01:53:01,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2025-03-14 01:53:01,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-14 01:53:01,401 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-14 01:53:01,401 WARN L246 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-14 01:53:01,401 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2025-03-14 01:53:01,441 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-14 01:53:01,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 432 transitions, 1124 flow [2025-03-14 01:53:01,478 INFO L124 PetriNetUnfolderBase]: 46/724 cut-off events. [2025-03-14 01:53:01,478 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2025-03-14 01:53:01,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 724 events. 46/724 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1975 event pairs, 0 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 811. Up to 22 conditions per place. [2025-03-14 01:53:01,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 441 places, 432 transitions, 1124 flow [2025-03-14 01:53:01,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 154 transitions, 441 flow [2025-03-14 01:53:01,481 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-14 01:53:01,482 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;@41689c2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-14 01:53:01,482 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-03-14 01:53:01,482 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-14 01:53:01,482 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-03-14 01:53:01,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-14 01:53:01,482 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-14 01:53:01,482 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-14 01:53:01,483 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2025-03-14 01:53:01,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-14 01:53:01,483 INFO L85 PathProgramCache]: Analyzing trace with hash 989813463, now seen corresponding path program 1 times [2025-03-14 01:53:01,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-14 01:53:01,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98455681] [2025-03-14 01:53:01,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-14 01:53:01,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-14 01:53:01,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-14 01:53:01,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-14 01:53:01,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-14 01:53:01,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-14 01:53:01,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-14 01:53:01,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-14 01:53:01,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98455681] [2025-03-14 01:53:01,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98455681] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-14 01:53:01,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-14 01:53:01,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-14 01:53:01,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019928383] [2025-03-14 01:53:01,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-14 01:53:01,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-14 01:53:01,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-14 01:53:01,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-14 01:53:01,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-14 01:53:01,549 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 432 [2025-03-14 01:53:01,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 154 transitions, 441 flow. Second operand has 3 states, 3 states have (on average 349.3333333333333) internal successors, (1048), 3 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-14 01:53:01,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-14 01:53:01,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 432 [2025-03-14 01:53:01,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand