./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 15:06:43,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 15:06:43,677 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-24 15:06:43,682 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 15:06:43,685 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 15:06:43,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 15:06:43,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 15:06:43,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 15:06:43,712 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 15:06:43,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 15:06:43,714 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 15:06:43,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 15:06:43,725 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 15:06:43,725 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 15:06:43,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 15:06:43,728 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 15:06:43,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 15:06:43,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 15:06:43,728 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 15:06:43,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 15:06:43,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 15:06:43,730 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 15:06:43,730 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-24 15:06:43,730 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 15:06:43,731 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 15:06:43,731 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 15:06:43,731 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 15:06:43,732 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 15:06:43,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 15:06:43,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 15:06:43,733 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 15:06:43,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:06:43,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 15:06:43,733 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 15:06:43,734 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 15:06:43,734 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 15:06:43,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 15:06:43,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 15:06:43,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 15:06:43,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 15:06:43,735 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 15:06:43,735 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c [2024-10-24 15:06:43,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 15:06:43,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 15:06:43,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 15:06:43,971 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 15:06:43,972 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 15:06:43,973 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i [2024-10-24 15:06:45,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 15:06:45,612 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 15:06:45,612 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i [2024-10-24 15:06:45,624 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5eb88cef/dfa7f0fd671849fdbe82cbc722e33d98/FLAG565563ac6 [2024-10-24 15:06:45,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5eb88cef/dfa7f0fd671849fdbe82cbc722e33d98 [2024-10-24 15:06:45,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 15:06:45,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 15:06:45,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 15:06:45,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 15:06:45,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 15:06:45,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:45" (1/1) ... [2024-10-24 15:06:45,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2775a0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:45, skipping insertion in model container [2024-10-24 15:06:45,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:06:45" (1/1) ... [2024-10-24 15:06:45,685 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 15:06:45,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:06:45,985 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 15:06:46,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:06:46,052 INFO L204 MainTranslator]: Completed translation [2024-10-24 15:06:46,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46 WrapperNode [2024-10-24 15:06:46,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 15:06:46,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 15:06:46,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 15:06:46,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 15:06:46,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (1/1) ... [2024-10-24 15:06:46,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (1/1) ... [2024-10-24 15:06:46,094 INFO L138 Inliner]: procedures = 173, calls = 16, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 109 [2024-10-24 15:06:46,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 15:06:46,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 15:06:46,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 15:06:46,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 15:06:46,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (1/1) ... [2024-10-24 15:06:46,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (1/1) ... [2024-10-24 15:06:46,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (1/1) ... [2024-10-24 15:06:46,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (1/1) ... [2024-10-24 15:06:46,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (1/1) ... [2024-10-24 15:06:46,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (1/1) ... [2024-10-24 15:06:46,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (1/1) ... [2024-10-24 15:06:46,112 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (1/1) ... [2024-10-24 15:06:46,114 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 15:06:46,114 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 15:06:46,115 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 15:06:46,115 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 15:06:46,115 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (1/1) ... [2024-10-24 15:06:46,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:06:46,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:06:46,151 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) [2024-10-24 15:06:46,153 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 [2024-10-24 15:06:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-10-24 15:06:46,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-10-24 15:06:46,187 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-24 15:06:46,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-24 15:06:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 15:06:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 15:06:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 15:06:46,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 15:06:46,189 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 15:06:46,322 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 15:06:46,324 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 15:06:46,508 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 15:06:46,508 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 15:06:46,581 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 15:06:46,581 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 15:06:46,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:46 BoogieIcfgContainer [2024-10-24 15:06:46,581 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 15:06:46,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 15:06:46,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 15:06:46,590 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 15:06:46,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:06:45" (1/3) ... [2024-10-24 15:06:46,591 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb708eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:46, skipping insertion in model container [2024-10-24 15:06:46,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:06:46" (2/3) ... [2024-10-24 15:06:46,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb708eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:06:46, skipping insertion in model container [2024-10-24 15:06:46,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:06:46" (3/3) ... [2024-10-24 15:06:46,593 INFO L112 eAbstractionObserver]: Analyzing ICFG 30_Function_Pointer3_vs.i [2024-10-24 15:06:46,609 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 15:06:46,609 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-24 15:06:46,609 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 15:06:46,665 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:46,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 110 transitions, 228 flow [2024-10-24 15:06:46,732 INFO L124 PetriNetUnfolderBase]: 8/118 cut-off events. [2024-10-24 15:06:46,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:06:46,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 8/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 145 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 105. Up to 4 conditions per place. [2024-10-24 15:06:46,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 110 transitions, 228 flow [2024-10-24 15:06:46,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 109 transitions, 225 flow [2024-10-24 15:06:46,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:46,761 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;@59411b47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:46,762 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-24 15:06:46,773 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:46,774 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-10-24 15:06:46,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:06:46,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:46,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:46,775 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:06:46,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:46,780 INFO L85 PathProgramCache]: Analyzing trace with hash -120462322, now seen corresponding path program 1 times [2024-10-24 15:06:46,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:46,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17248678] [2024-10-24 15:06:46,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:46,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:46,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:46,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17248678] [2024-10-24 15:06:46,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17248678] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:46,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:46,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:06:46,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302003998] [2024-10-24 15:06:46,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:46,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:06:46,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:06:47,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:06:47,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 110 [2024-10-24 15:06:47,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2024-10-24 15:06:47,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:47,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 110 [2024-10-24 15:06:47,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:06:47,085 INFO L124 PetriNetUnfolderBase]: 18/158 cut-off events. [2024-10-24 15:06:47,085 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 15:06:47,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 158 events. 18/158 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 335 event pairs, 1 based on Foata normal form. 47/189 useless extension candidates. Maximal degree in co-relation 185. Up to 25 conditions per place. [2024-10-24 15:06:47,088 INFO L140 encePairwiseOnDemand]: 96/110 looper letters, 11 selfloop transitions, 3 changer transitions 0/98 dead transitions. [2024-10-24 15:06:47,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 234 flow [2024-10-24 15:06:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:06:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:06:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2024-10-24 15:06:47,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2024-10-24 15:06:47,126 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 225 flow. Second operand 3 states and 308 transitions. [2024-10-24 15:06:47,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 234 flow [2024-10-24 15:06:47,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:06:47,132 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 216 flow [2024-10-24 15:06:47,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=110, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2024-10-24 15:06:47,136 INFO L277 CegarLoopForPetriNet]: 108 programPoint places, -10 predicate places. [2024-10-24 15:06:47,136 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 216 flow [2024-10-24 15:06:47,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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) [2024-10-24 15:06:47,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:47,137 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-24 15:06:47,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 15:06:47,137 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-24 15:06:47,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:47,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1361154627, now seen corresponding path program 1 times [2024-10-24 15:06:47,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:47,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497032024] [2024-10-24 15:06:47,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:47,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:47,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:06:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:47,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:06:47,183 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:06:47,184 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-10-24 15:06:47,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-10-24 15:06:47,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-10-24 15:06:47,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-10-24 15:06:47,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-10-24 15:06:47,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-10-24 15:06:47,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-10-24 15:06:47,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2024-10-24 15:06:47,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-10-24 15:06:47,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-10-24 15:06:47,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-10-24 15:06:47,191 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-10-24 15:06:47,191 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-10-24 15:06:47,191 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-10-24 15:06:47,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 15:06:47,191 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:06:47,194 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:06:47,194 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 15:06:47,228 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:47,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 191 transitions, 402 flow [2024-10-24 15:06:47,259 INFO L124 PetriNetUnfolderBase]: 11/192 cut-off events. [2024-10-24 15:06:47,259 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:06:47,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 192 events. 11/192 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 381 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 199. Up to 6 conditions per place. [2024-10-24 15:06:47,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 191 transitions, 402 flow [2024-10-24 15:06:47,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 172 transitions, 357 flow [2024-10-24 15:06:47,265 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:47,266 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;@59411b47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:47,266 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-24 15:06:47,269 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:47,269 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-10-24 15:06:47,269 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:06:47,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:47,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:47,270 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2024-10-24 15:06:47,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash 358957501, now seen corresponding path program 1 times [2024-10-24 15:06:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:47,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081064815] [2024-10-24 15:06:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:47,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:47,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:47,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081064815] [2024-10-24 15:06:47,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081064815] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:47,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:47,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:06:47,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872135370] [2024-10-24 15:06:47,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:47,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:06:47,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:06:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:06:47,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 191 [2024-10-24 15:06:47,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 172 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2024-10-24 15:06:47,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:47,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 191 [2024-10-24 15:06:47,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:06:47,541 INFO L124 PetriNetUnfolderBase]: 184/1343 cut-off events. [2024-10-24 15:06:47,542 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-10-24 15:06:47,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 1343 events. 184/1343 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9043 event pairs, 59 based on Foata normal form. 227/1468 useless extension candidates. Maximal degree in co-relation 1646. Up to 137 conditions per place. [2024-10-24 15:06:47,557 INFO L140 encePairwiseOnDemand]: 172/191 looper letters, 18 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2024-10-24 15:06:47,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 161 transitions, 387 flow [2024-10-24 15:06:47,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:06:47,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:06:47,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2024-10-24 15:06:47,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.900523560209424 [2024-10-24 15:06:47,565 INFO L175 Difference]: Start difference. First operand has 171 places, 172 transitions, 357 flow. Second operand 3 states and 516 transitions. [2024-10-24 15:06:47,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 161 transitions, 387 flow [2024-10-24 15:06:47,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 161 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:06:47,570 INFO L231 Difference]: Finished difference. Result has 157 places, 155 transitions, 348 flow [2024-10-24 15:06:47,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=348, PETRI_PLACES=157, PETRI_TRANSITIONS=155} [2024-10-24 15:06:47,572 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -14 predicate places. [2024-10-24 15:06:47,573 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 155 transitions, 348 flow [2024-10-24 15:06:47,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2024-10-24 15:06:47,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:47,573 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:47,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 15:06:47,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2024-10-24 15:06:47,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:47,575 INFO L85 PathProgramCache]: Analyzing trace with hash 274684554, now seen corresponding path program 1 times [2024-10-24 15:06:47,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:47,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113926879] [2024-10-24 15:06:47,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:47,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:47,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:06:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:47,633 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:06:47,637 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:06:47,637 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-10-24 15:06:47,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2024-10-24 15:06:47,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2024-10-24 15:06:47,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2024-10-24 15:06:47,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2024-10-24 15:06:47,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2024-10-24 15:06:47,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2024-10-24 15:06:47,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 20 remaining) [2024-10-24 15:06:47,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2024-10-24 15:06:47,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2024-10-24 15:06:47,638 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2024-10-24 15:06:47,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2024-10-24 15:06:47,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2024-10-24 15:06:47,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2024-10-24 15:06:47,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2024-10-24 15:06:47,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2024-10-24 15:06:47,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2024-10-24 15:06:47,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2024-10-24 15:06:47,639 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2024-10-24 15:06:47,640 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2024-10-24 15:06:47,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 15:06:47,640 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:06:47,642 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:06:47,644 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 15:06:47,720 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:47,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 272 transitions, 580 flow [2024-10-24 15:06:47,760 INFO L124 PetriNetUnfolderBase]: 14/266 cut-off events. [2024-10-24 15:06:47,761 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 15:06:47,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 266 events. 14/266 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 739 event pairs, 0 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 277. Up to 8 conditions per place. [2024-10-24 15:06:47,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 272 transitions, 580 flow [2024-10-24 15:06:47,765 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 235 transitions, 491 flow [2024-10-24 15:06:47,768 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:47,769 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;@59411b47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:47,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-24 15:06:47,771 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:47,772 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-10-24 15:06:47,772 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:06:47,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:47,772 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:47,772 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-24 15:06:47,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1553414947, now seen corresponding path program 1 times [2024-10-24 15:06:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:47,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758190768] [2024-10-24 15:06:47,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:47,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:47,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:47,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758190768] [2024-10-24 15:06:47,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758190768] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:47,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:47,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:06:47,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867993024] [2024-10-24 15:06:47,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:47,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:06:47,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:47,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:06:47,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:06:47,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 272 [2024-10-24 15:06:47,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 235 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2024-10-24 15:06:47,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:47,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 272 [2024-10-24 15:06:47,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:06:48,739 INFO L124 PetriNetUnfolderBase]: 1166/6209 cut-off events. [2024-10-24 15:06:48,740 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2024-10-24 15:06:48,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 6209 events. 1166/6209 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 61195 event pairs, 476 based on Foata normal form. 998/6715 useless extension candidates. Maximal degree in co-relation 8084. Up to 831 conditions per place. [2024-10-24 15:06:48,800 INFO L140 encePairwiseOnDemand]: 248/272 looper letters, 25 selfloop transitions, 5 changer transitions 0/224 dead transitions. [2024-10-24 15:06:48,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 224 transitions, 544 flow [2024-10-24 15:06:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:06:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:06:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 724 transitions. [2024-10-24 15:06:48,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8872549019607843 [2024-10-24 15:06:48,803 INFO L175 Difference]: Start difference. First operand has 234 places, 235 transitions, 491 flow. Second operand 3 states and 724 transitions. [2024-10-24 15:06:48,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 224 transitions, 544 flow [2024-10-24 15:06:48,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 224 transitions, 539 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-24 15:06:48,810 INFO L231 Difference]: Finished difference. Result has 216 places, 215 transitions, 480 flow [2024-10-24 15:06:48,812 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=272, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=216, PETRI_TRANSITIONS=215} [2024-10-24 15:06:48,813 INFO L277 CegarLoopForPetriNet]: 234 programPoint places, -18 predicate places. [2024-10-24 15:06:48,813 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 215 transitions, 480 flow [2024-10-24 15:06:48,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 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) [2024-10-24 15:06:48,814 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:48,815 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:48,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 15:06:48,815 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-24 15:06:48,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:48,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1797486001, now seen corresponding path program 1 times [2024-10-24 15:06:48,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:48,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814469400] [2024-10-24 15:06:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:48,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:48,837 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:06:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:48,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:06:48,933 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:06:48,933 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-10-24 15:06:48,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2024-10-24 15:06:48,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2024-10-24 15:06:48,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2024-10-24 15:06:48,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2024-10-24 15:06:48,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2024-10-24 15:06:48,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2024-10-24 15:06:48,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 26 remaining) [2024-10-24 15:06:48,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2024-10-24 15:06:48,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2024-10-24 15:06:48,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2024-10-24 15:06:48,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2024-10-24 15:06:48,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2024-10-24 15:06:48,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2024-10-24 15:06:48,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2024-10-24 15:06:48,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2024-10-24 15:06:48,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2024-10-24 15:06:48,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2024-10-24 15:06:48,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2024-10-24 15:06:48,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2024-10-24 15:06:48,936 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2024-10-24 15:06:48,936 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2024-10-24 15:06:48,936 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2024-10-24 15:06:48,936 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2024-10-24 15:06:48,936 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2024-10-24 15:06:48,936 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2024-10-24 15:06:48,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 15:06:48,936 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:06:48,937 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:06:48,937 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-24 15:06:48,994 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:48,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 353 transitions, 762 flow [2024-10-24 15:06:49,035 INFO L124 PetriNetUnfolderBase]: 17/340 cut-off events. [2024-10-24 15:06:49,036 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 15:06:49,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 340 events. 17/340 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1129 event pairs, 0 based on Foata normal form. 0/297 useless extension candidates. Maximal degree in co-relation 356. Up to 10 conditions per place. [2024-10-24 15:06:49,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 353 transitions, 762 flow [2024-10-24 15:06:49,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 298 transitions, 627 flow [2024-10-24 15:06:49,043 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:49,045 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;@59411b47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:49,046 INFO L334 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-10-24 15:06:49,049 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:49,049 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-10-24 15:06:49,049 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:06:49,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:49,049 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:49,049 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-24 15:06:49,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:49,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1562612370, now seen corresponding path program 1 times [2024-10-24 15:06:49,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:49,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443808191] [2024-10-24 15:06:49,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:49,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:49,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:49,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443808191] [2024-10-24 15:06:49,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443808191] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:49,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:49,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:06:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226280265] [2024-10-24 15:06:49,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:49,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:06:49,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:06:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:06:49,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 353 [2024-10-24 15:06:49,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 298 transitions, 627 flow. Second operand has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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) [2024-10-24 15:06:49,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:49,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 353 [2024-10-24 15:06:49,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:06:53,037 INFO L124 PetriNetUnfolderBase]: 6256/23567 cut-off events. [2024-10-24 15:06:53,041 INFO L125 PetriNetUnfolderBase]: For 5218/5218 co-relation queries the response was YES. [2024-10-24 15:06:53,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33531 conditions, 23567 events. 6256/23567 cut-off events. For 5218/5218 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 282159 event pairs, 2789 based on Foata normal form. 4177/25632 useless extension candidates. Maximal degree in co-relation 33506. Up to 4695 conditions per place. [2024-10-24 15:06:53,405 INFO L140 encePairwiseOnDemand]: 324/353 looper letters, 32 selfloop transitions, 6 changer transitions 0/287 dead transitions. [2024-10-24 15:06:53,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 287 transitions, 705 flow [2024-10-24 15:06:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:06:53,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:06:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 932 transitions. [2024-10-24 15:06:53,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8800755429650614 [2024-10-24 15:06:53,409 INFO L175 Difference]: Start difference. First operand has 297 places, 298 transitions, 627 flow. Second operand 3 states and 932 transitions. [2024-10-24 15:06:53,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 287 transitions, 705 flow [2024-10-24 15:06:53,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 287 transitions, 692 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-24 15:06:53,421 INFO L231 Difference]: Finished difference. Result has 275 places, 275 transitions, 612 flow [2024-10-24 15:06:53,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=612, PETRI_PLACES=275, PETRI_TRANSITIONS=275} [2024-10-24 15:06:53,423 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, -22 predicate places. [2024-10-24 15:06:53,423 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 275 transitions, 612 flow [2024-10-24 15:06:53,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 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) [2024-10-24 15:06:53,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:53,424 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:53,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 15:06:53,424 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-10-24 15:06:53,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1442903513, now seen corresponding path program 1 times [2024-10-24 15:06:53,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:53,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198584207] [2024-10-24 15:06:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:53,445 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:06:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:06:53,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:06:53,463 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:06:53,463 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2024-10-24 15:06:53,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2024-10-24 15:06:53,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2024-10-24 15:06:53,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (28 of 32 remaining) [2024-10-24 15:06:53,463 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2024-10-24 15:06:53,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2024-10-24 15:06:53,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2024-10-24 15:06:53,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 32 remaining) [2024-10-24 15:06:53,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2024-10-24 15:06:53,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2024-10-24 15:06:53,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2024-10-24 15:06:53,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (20 of 32 remaining) [2024-10-24 15:06:53,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2024-10-24 15:06:53,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2024-10-24 15:06:53,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2024-10-24 15:06:53,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2024-10-24 15:06:53,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2024-10-24 15:06:53,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (14 of 32 remaining) [2024-10-24 15:06:53,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (13 of 32 remaining) [2024-10-24 15:06:53,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2024-10-24 15:06:53,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2024-10-24 15:06:53,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2024-10-24 15:06:53,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (9 of 32 remaining) [2024-10-24 15:06:53,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2024-10-24 15:06:53,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2024-10-24 15:06:53,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2024-10-24 15:06:53,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2024-10-24 15:06:53,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2024-10-24 15:06:53,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2024-10-24 15:06:53,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2024-10-24 15:06:53,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2024-10-24 15:06:53,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2024-10-24 15:06:53,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 15:06:53,467 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:06:53,468 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:06:53,468 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-24 15:06:53,528 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:06:53,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 434 transitions, 948 flow [2024-10-24 15:06:53,571 INFO L124 PetriNetUnfolderBase]: 20/414 cut-off events. [2024-10-24 15:06:53,571 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-24 15:06:53,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 414 events. 20/414 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1515 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 436. Up to 12 conditions per place. [2024-10-24 15:06:53,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 434 transitions, 948 flow [2024-10-24 15:06:53,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 360 places, 361 transitions, 765 flow [2024-10-24 15:06:53,581 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:06:53,581 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;@59411b47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:06:53,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-10-24 15:06:53,583 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:06:53,583 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-10-24 15:06:53,583 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:06:53,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:06:53,583 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:06:53,583 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-24 15:06:53,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:06:53,584 INFO L85 PathProgramCache]: Analyzing trace with hash 329271920, now seen corresponding path program 1 times [2024-10-24 15:06:53,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:06:53,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882119346] [2024-10-24 15:06:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:06:53,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:06:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:06:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:06:53,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:06:53,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882119346] [2024-10-24 15:06:53,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882119346] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:06:53,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:06:53,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:06:53,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229777024] [2024-10-24 15:06:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:06:53,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:06:53,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:06:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:06:53,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:06:53,636 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 434 [2024-10-24 15:06:53,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 361 transitions, 765 flow. Second operand has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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) [2024-10-24 15:06:53,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:06:53,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 434 [2024-10-24 15:06:53,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:07:15,006 INFO L124 PetriNetUnfolderBase]: 31776/104431 cut-off events. [2024-10-24 15:07:15,007 INFO L125 PetriNetUnfolderBase]: For 33842/33842 co-relation queries the response was YES. [2024-10-24 15:07:16,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153420 conditions, 104431 events. 31776/104431 cut-off events. For 33842/33842 co-relation queries the response was YES. Maximal size of possible extension queue 2070. Compared 1477430 event pairs, 15381 based on Foata normal form. 17057/112586 useless extension candidates. Maximal degree in co-relation 153394. Up to 24103 conditions per place. [2024-10-24 15:07:17,975 INFO L140 encePairwiseOnDemand]: 400/434 looper letters, 39 selfloop transitions, 7 changer transitions 0/350 dead transitions. [2024-10-24 15:07:17,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 350 transitions, 870 flow [2024-10-24 15:07:17,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:07:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:07:17,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1140 transitions. [2024-10-24 15:07:17,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8755760368663594 [2024-10-24 15:07:17,978 INFO L175 Difference]: Start difference. First operand has 360 places, 361 transitions, 765 flow. Second operand 3 states and 1140 transitions. [2024-10-24 15:07:17,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 350 transitions, 870 flow [2024-10-24 15:07:17,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 350 transitions, 845 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-10-24 15:07:17,998 INFO L231 Difference]: Finished difference. Result has 334 places, 335 transitions, 744 flow [2024-10-24 15:07:17,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=744, PETRI_PLACES=334, PETRI_TRANSITIONS=335} [2024-10-24 15:07:17,999 INFO L277 CegarLoopForPetriNet]: 360 programPoint places, -26 predicate places. [2024-10-24 15:07:17,999 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 335 transitions, 744 flow [2024-10-24 15:07:18,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 348.0) internal successors, (1044), 3 states have internal predecessors, (1044), 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) [2024-10-24 15:07:18,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:07:18,000 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:07:18,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 15:07:18,001 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-10-24 15:07:18,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:07:18,001 INFO L85 PathProgramCache]: Analyzing trace with hash 631929507, now seen corresponding path program 1 times [2024-10-24 15:07:18,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:07:18,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667935040] [2024-10-24 15:07:18,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:07:18,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:07:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:07:18,012 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:07:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:07:18,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:07:18,025 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:07:18,025 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 38 remaining) [2024-10-24 15:07:18,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (36 of 38 remaining) [2024-10-24 15:07:18,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (35 of 38 remaining) [2024-10-24 15:07:18,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (34 of 38 remaining) [2024-10-24 15:07:18,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (33 of 38 remaining) [2024-10-24 15:07:18,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (32 of 38 remaining) [2024-10-24 15:07:18,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 38 remaining) [2024-10-24 15:07:18,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 38 remaining) [2024-10-24 15:07:18,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (29 of 38 remaining) [2024-10-24 15:07:18,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (28 of 38 remaining) [2024-10-24 15:07:18,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (27 of 38 remaining) [2024-10-24 15:07:18,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (26 of 38 remaining) [2024-10-24 15:07:18,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (25 of 38 remaining) [2024-10-24 15:07:18,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (24 of 38 remaining) [2024-10-24 15:07:18,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (23 of 38 remaining) [2024-10-24 15:07:18,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (22 of 38 remaining) [2024-10-24 15:07:18,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (21 of 38 remaining) [2024-10-24 15:07:18,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (20 of 38 remaining) [2024-10-24 15:07:18,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (19 of 38 remaining) [2024-10-24 15:07:18,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (18 of 38 remaining) [2024-10-24 15:07:18,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (17 of 38 remaining) [2024-10-24 15:07:18,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (16 of 38 remaining) [2024-10-24 15:07:18,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (15 of 38 remaining) [2024-10-24 15:07:18,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (14 of 38 remaining) [2024-10-24 15:07:18,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (13 of 38 remaining) [2024-10-24 15:07:18,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (12 of 38 remaining) [2024-10-24 15:07:18,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (11 of 38 remaining) [2024-10-24 15:07:18,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (10 of 38 remaining) [2024-10-24 15:07:18,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (9 of 38 remaining) [2024-10-24 15:07:18,028 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (8 of 38 remaining) [2024-10-24 15:07:18,029 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (7 of 38 remaining) [2024-10-24 15:07:18,029 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (6 of 38 remaining) [2024-10-24 15:07:18,029 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (5 of 38 remaining) [2024-10-24 15:07:18,029 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 38 remaining) [2024-10-24 15:07:18,029 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 38 remaining) [2024-10-24 15:07:18,029 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 38 remaining) [2024-10-24 15:07:18,029 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 38 remaining) [2024-10-24 15:07:18,029 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 38 remaining) [2024-10-24 15:07:18,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 15:07:18,030 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:07:18,030 WARN L239 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:07:18,030 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-10-24 15:07:18,090 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:07:18,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 515 transitions, 1138 flow [2024-10-24 15:07:18,149 INFO L124 PetriNetUnfolderBase]: 23/488 cut-off events. [2024-10-24 15:07:18,149 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-24 15:07:18,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 488 events. 23/488 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1922 event pairs, 0 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 517. Up to 14 conditions per place. [2024-10-24 15:07:18,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 504 places, 515 transitions, 1138 flow [2024-10-24 15:07:18,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 424 transitions, 905 flow [2024-10-24 15:07:18,163 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:07:18,166 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;@59411b47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:07:18,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2024-10-24 15:07:18,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:07:18,168 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2024-10-24 15:07:18,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:07:18,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:07:18,168 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:07:18,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2024-10-24 15:07:18,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:07:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash -171682717, now seen corresponding path program 1 times [2024-10-24 15:07:18,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:07:18,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684007986] [2024-10-24 15:07:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:07:18,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:07:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:07:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:07:18,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:07:18,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684007986] [2024-10-24 15:07:18,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684007986] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:07:18,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:07:18,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:07:18,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218272034] [2024-10-24 15:07:18,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:07:18,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:07:18,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:07:18,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:07:18,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:07:18,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 411 out of 515 [2024-10-24 15:07:18,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 424 transitions, 905 flow. Second operand has 3 states, 3 states have (on average 412.0) internal successors, (1236), 3 states have internal predecessors, (1236), 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) [2024-10-24 15:07:18,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:07:18,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 411 of 515 [2024-10-24 15:07:18,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand