./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/38_rand_cas_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version fca748b1 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/38_rand_cas_vs_concur.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 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:28:37,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:28:37,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-20 13:28:37,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:28:37,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:28:37,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:28:37,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:28:37,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:28:37,393 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:28:37,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:28:37,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:28:37,395 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:28:37,395 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:28:37,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:28:37,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:28:37,402 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:28:37,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:28:37,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:28:37,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:28:37,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:28:37,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:28:37,405 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:28:37,406 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-20 13:28:37,406 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:28:37,406 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 13:28:37,406 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:28:37,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:28:37,407 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:28:37,407 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:28:37,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:28:37,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:28:37,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:28:37,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:28:37,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:28:37,409 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:28:37,409 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:28:37,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:28:37,409 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:28:37,409 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:28:37,410 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:28:37,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:28:37,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628ef5ad19754647fb807fc1cc13e384334d380a6e3691b7b5f1842f42e5f662 [2024-11-20 13:28:37,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:28:37,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:28:37,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:28:37,684 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:28:37,685 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:28:37,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2024-11-20 13:28:39,166 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:28:39,404 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:28:39,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/38_rand_cas_vs_concur.i [2024-11-20 13:28:39,426 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d9592804/9651599f9d334f02b781c33221225947/FLAG16771d1a6 [2024-11-20 13:28:39,442 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d9592804/9651599f9d334f02b781c33221225947 [2024-11-20 13:28:39,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:28:39,446 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:28:39,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:28:39,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:28:39,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:28:39,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:28:39" (1/1) ... [2024-11-20 13:28:39,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f50466c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:39, skipping insertion in model container [2024-11-20 13:28:39,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:28:39" (1/1) ... [2024-11-20 13:28:39,509 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:28:39,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:28:39,921 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:28:39,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:28:40,028 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:28:40,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40 WrapperNode [2024-11-20 13:28:40,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:28:40,045 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:28:40,045 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:28:40,045 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:28:40,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (1/1) ... [2024-11-20 13:28:40,089 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (1/1) ... [2024-11-20 13:28:40,135 INFO L138 Inliner]: procedures = 170, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 123 [2024-11-20 13:28:40,136 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:28:40,137 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:28:40,137 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:28:40,137 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:28:40,147 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (1/1) ... [2024-11-20 13:28:40,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (1/1) ... [2024-11-20 13:28:40,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (1/1) ... [2024-11-20 13:28:40,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (1/1) ... [2024-11-20 13:28:40,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (1/1) ... [2024-11-20 13:28:40,175 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (1/1) ... [2024-11-20 13:28:40,177 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (1/1) ... [2024-11-20 13:28:40,182 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (1/1) ... [2024-11-20 13:28:40,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:28:40,189 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:28:40,190 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:28:40,190 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:28:40,191 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (1/1) ... [2024-11-20 13:28:40,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:28:40,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:28:40,226 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) [2024-11-20 13:28:40,229 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 [2024-11-20 13:28:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-20 13:28:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-20 13:28:40,278 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-20 13:28:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-20 13:28:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:28:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 13:28:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:28:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-20 13:28:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:28:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:28:40,283 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 13:28:40,392 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:28:40,394 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:28:40,632 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 13:28:40,632 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:28:40,781 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:28:40,781 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-20 13:28:40,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:28:40 BoogieIcfgContainer [2024-11-20 13:28:40,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:28:40,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:28:40,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:28:40,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:28:40,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:28:39" (1/3) ... [2024-11-20 13:28:40,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698b4d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:28:40, skipping insertion in model container [2024-11-20 13:28:40,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:28:40" (2/3) ... [2024-11-20 13:28:40,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@698b4d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:28:40, skipping insertion in model container [2024-11-20 13:28:40,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:28:40" (3/3) ... [2024-11-20 13:28:40,793 INFO L112 eAbstractionObserver]: Analyzing ICFG 38_rand_cas_vs_concur.i [2024-11-20 13:28:40,810 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:28:40,810 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-20 13:28:40,811 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 13:28:40,898 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:28:40,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 200 flow [2024-11-20 13:28:41,005 INFO L124 PetriNetUnfolderBase]: 9/107 cut-off events. [2024-11-20 13:28:41,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:28:41,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 107 events. 9/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2024-11-20 13:28:41,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 98 transitions, 200 flow [2024-11-20 13:28:41,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 93 places, 98 transitions, 200 flow [2024-11-20 13:28:41,029 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:28:41,038 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;@6f9fc345, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:28:41,038 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-20 13:28:41,053 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:28:41,054 INFO L124 PetriNetUnfolderBase]: 3/41 cut-off events. [2024-11-20 13:28:41,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:28:41,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:28:41,055 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] [2024-11-20 13:28:41,056 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-20 13:28:41,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:28:41,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1050711820, now seen corresponding path program 1 times [2024-11-20 13:28:41,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:28:41,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687805554] [2024-11-20 13:28:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:28:41,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:28:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:28:41,180 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:28:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:28:41,230 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:28:41,232 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:28:41,234 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-20 13:28:41,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-11-20 13:28:41,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-11-20 13:28:41,236 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-11-20 13:28:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-11-20 13:28:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-11-20 13:28:41,237 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-11-20 13:28:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-11-20 13:28:41,238 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-11-20 13:28:41,239 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-11-20 13:28:41,239 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-11-20 13:28:41,239 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-11-20 13:28:41,240 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-11-20 13:28:41,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:28:41,241 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-20 13:28:41,248 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:28:41,248 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 13:28:41,365 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:28:41,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 172 transitions, 354 flow [2024-11-20 13:28:41,433 INFO L124 PetriNetUnfolderBase]: 17/192 cut-off events. [2024-11-20 13:28:41,434 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 13:28:41,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 192 events. 17/192 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 454 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 157. Up to 6 conditions per place. [2024-11-20 13:28:41,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 172 transitions, 354 flow [2024-11-20 13:28:41,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 172 transitions, 354 flow [2024-11-20 13:28:41,446 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:28:41,447 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;@6f9fc345, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:28:41,448 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-20 13:28:41,463 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:28:41,463 INFO L124 PetriNetUnfolderBase]: 4/71 cut-off events. [2024-11-20 13:28:41,463 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-20 13:28:41,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:28:41,464 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:28:41,464 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-20 13:28:41,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:28:41,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1175114335, now seen corresponding path program 1 times [2024-11-20 13:28:41,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:28:41,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68778145] [2024-11-20 13:28:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:28:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:28:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:28:42,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:28:42,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:28:42,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68778145] [2024-11-20 13:28:42,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68778145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:28:42,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:28:42,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:28:42,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504167144] [2024-11-20 13:28:42,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:28:42,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:28:42,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:28:42,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:28:42,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:28:42,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 172 [2024-11-20 13:28:42,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 172 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 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) [2024-11-20 13:28:42,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:28:42,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 172 [2024-11-20 13:28:42,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:28:43,037 INFO L124 PetriNetUnfolderBase]: 96/895 cut-off events. [2024-11-20 13:28:43,038 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-20 13:28:43,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 895 events. 96/895 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5194 event pairs, 4 based on Foata normal form. 190/1018 useless extension candidates. Maximal degree in co-relation 898. Up to 60 conditions per place. [2024-11-20 13:28:43,053 INFO L140 encePairwiseOnDemand]: 138/172 looper letters, 51 selfloop transitions, 24 changer transitions 0/203 dead transitions. [2024-11-20 13:28:43,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 203 transitions, 586 flow [2024-11-20 13:28:43,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:28:43,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 13:28:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 975 transitions. [2024-11-20 13:28:43,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9447674418604651 [2024-11-20 13:28:43,078 INFO L175 Difference]: Start difference. First operand has 162 places, 172 transitions, 354 flow. Second operand 6 states and 975 transitions. [2024-11-20 13:28:43,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 203 transitions, 586 flow [2024-11-20 13:28:43,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 203 transitions, 586 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:28:43,090 INFO L231 Difference]: Finished difference. Result has 156 places, 169 transitions, 472 flow [2024-11-20 13:28:43,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=156, PETRI_TRANSITIONS=169} [2024-11-20 13:28:43,098 INFO L277 CegarLoopForPetriNet]: 162 programPoint places, -6 predicate places. [2024-11-20 13:28:43,098 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 169 transitions, 472 flow [2024-11-20 13:28:43,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 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) [2024-11-20 13:28:43,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:28:43,099 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] [2024-11-20 13:28:43,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:28:43,100 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-20 13:28:43,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:28:43,100 INFO L85 PathProgramCache]: Analyzing trace with hash 160215317, now seen corresponding path program 1 times [2024-11-20 13:28:43,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:28:43,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752716806] [2024-11-20 13:28:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:28:43,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:28:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:28:43,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:28:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:28:43,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:28:43,133 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:28:43,134 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-11-20 13:28:43,134 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2024-11-20 13:28:43,134 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2024-11-20 13:28:43,134 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2024-11-20 13:28:43,134 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2024-11-20 13:28:43,134 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2024-11-20 13:28:43,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2024-11-20 13:28:43,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2024-11-20 13:28:43,135 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2024-11-20 13:28:43,136 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2024-11-20 13:28:43,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2024-11-20 13:28:43,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2024-11-20 13:28:43,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2024-11-20 13:28:43,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2024-11-20 13:28:43,137 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2024-11-20 13:28:43,140 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2024-11-20 13:28:43,140 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2024-11-20 13:28:43,140 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2024-11-20 13:28:43,140 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2024-11-20 13:28:43,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:28:43,141 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 13:28:43,141 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:28:43,142 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-20 13:28:43,222 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:28:43,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 246 transitions, 510 flow [2024-11-20 13:28:43,278 INFO L124 PetriNetUnfolderBase]: 25/277 cut-off events. [2024-11-20 13:28:43,279 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-20 13:28:43,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 277 events. 25/277 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 887 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 230. Up to 8 conditions per place. [2024-11-20 13:28:43,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 231 places, 246 transitions, 510 flow [2024-11-20 13:28:43,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 246 transitions, 510 flow [2024-11-20 13:28:43,291 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:28:43,292 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;@6f9fc345, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:28:43,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-20 13:28:43,301 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:28:43,301 INFO L124 PetriNetUnfolderBase]: 5/74 cut-off events. [2024-11-20 13:28:43,301 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 13:28:43,301 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:28:43,302 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:28:43,302 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-20 13:28:43,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:28:43,303 INFO L85 PathProgramCache]: Analyzing trace with hash -377977376, now seen corresponding path program 1 times [2024-11-20 13:28:43,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:28:43,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508729199] [2024-11-20 13:28:43,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:28:43,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:28:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:28:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:28:43,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:28:43,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508729199] [2024-11-20 13:28:43,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508729199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:28:43,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:28:43,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:28:43,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244197913] [2024-11-20 13:28:43,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:28:43,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:28:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:28:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:28:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:28:43,813 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 246 [2024-11-20 13:28:43,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 246 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 190.16666666666666) internal successors, (1141), 6 states have internal predecessors, (1141), 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) [2024-11-20 13:28:43,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:28:43,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 246 [2024-11-20 13:28:43,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:28:45,838 INFO L124 PetriNetUnfolderBase]: 2059/10165 cut-off events. [2024-11-20 13:28:45,838 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2024-11-20 13:28:45,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13508 conditions, 10165 events. 2059/10165 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 113000 event pairs, 154 based on Foata normal form. 2615/11927 useless extension candidates. Maximal degree in co-relation 10493. Up to 1016 conditions per place. [2024-11-20 13:28:45,948 INFO L140 encePairwiseOnDemand]: 196/246 looper letters, 78 selfloop transitions, 36 changer transitions 0/297 dead transitions. [2024-11-20 13:28:45,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 297 transitions, 888 flow [2024-11-20 13:28:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:28:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 13:28:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1396 transitions. [2024-11-20 13:28:45,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.94579945799458 [2024-11-20 13:28:45,953 INFO L175 Difference]: Start difference. First operand has 231 places, 246 transitions, 510 flow. Second operand 6 states and 1396 transitions. [2024-11-20 13:28:45,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 297 transitions, 888 flow [2024-11-20 13:28:45,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 297 transitions, 878 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-20 13:28:45,963 INFO L231 Difference]: Finished difference. Result has 219 places, 244 transitions, 690 flow [2024-11-20 13:28:45,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=690, PETRI_PLACES=219, PETRI_TRANSITIONS=244} [2024-11-20 13:28:45,965 INFO L277 CegarLoopForPetriNet]: 231 programPoint places, -12 predicate places. [2024-11-20 13:28:45,966 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 244 transitions, 690 flow [2024-11-20 13:28:45,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.16666666666666) internal successors, (1141), 6 states have internal predecessors, (1141), 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) [2024-11-20 13:28:45,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:28:45,969 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] [2024-11-20 13:28:45,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:28:45,969 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-20 13:28:45,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:28:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash -950677357, now seen corresponding path program 1 times [2024-11-20 13:28:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:28:45,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822077156] [2024-11-20 13:28:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:28:45,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:28:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:28:45,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:28:45,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:28:46,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:28:46,013 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:28:46,014 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-11-20 13:28:46,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2024-11-20 13:28:46,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2024-11-20 13:28:46,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2024-11-20 13:28:46,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2024-11-20 13:28:46,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2024-11-20 13:28:46,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2024-11-20 13:28:46,015 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2024-11-20 13:28:46,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2024-11-20 13:28:46,016 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2024-11-20 13:28:46,018 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2024-11-20 13:28:46,018 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2024-11-20 13:28:46,018 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2024-11-20 13:28:46,018 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2024-11-20 13:28:46,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2024-11-20 13:28:46,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2024-11-20 13:28:46,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2024-11-20 13:28:46,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2024-11-20 13:28:46,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2024-11-20 13:28:46,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2024-11-20 13:28:46,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2024-11-20 13:28:46,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2024-11-20 13:28:46,019 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2024-11-20 13:28:46,020 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2024-11-20 13:28:46,020 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2024-11-20 13:28:46,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 13:28:46,020 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 13:28:46,021 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:28:46,021 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-20 13:28:46,108 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:28:46,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 320 transitions, 668 flow [2024-11-20 13:28:46,163 INFO L124 PetriNetUnfolderBase]: 33/362 cut-off events. [2024-11-20 13:28:46,163 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-20 13:28:46,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 362 events. 33/362 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1354 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 303. Up to 10 conditions per place. [2024-11-20 13:28:46,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 320 transitions, 668 flow [2024-11-20 13:28:46,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 320 transitions, 668 flow [2024-11-20 13:28:46,179 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:28:46,180 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;@6f9fc345, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:28:46,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-11-20 13:28:46,185 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:28:46,185 INFO L124 PetriNetUnfolderBase]: 5/74 cut-off events. [2024-11-20 13:28:46,186 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 13:28:46,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:28:46,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:28:46,186 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-11-20 13:28:46,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:28:46,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1013886071, now seen corresponding path program 1 times [2024-11-20 13:28:46,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:28:46,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906103959] [2024-11-20 13:28:46,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:28:46,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:28:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:28:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:28:46,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:28:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906103959] [2024-11-20 13:28:46,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906103959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:28:46,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:28:46,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:28:46,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513846507] [2024-11-20 13:28:46,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:28:46,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:28:46,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:28:46,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:28:46,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:28:46,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 320 [2024-11-20 13:28:46,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 320 transitions, 668 flow. Second operand has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 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) [2024-11-20 13:28:46,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:28:46,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 320 [2024-11-20 13:28:46,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:29:01,754 INFO L124 PetriNetUnfolderBase]: 30584/105715 cut-off events. [2024-11-20 13:29:01,755 INFO L125 PetriNetUnfolderBase]: For 10334/10334 co-relation queries the response was YES. [2024-11-20 13:29:02,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150622 conditions, 105715 events. 30584/105715 cut-off events. For 10334/10334 co-relation queries the response was YES. Maximal size of possible extension queue 3037. Compared 1565886 event pairs, 2775 based on Foata normal form. 30600/126855 useless extension candidates. Maximal degree in co-relation 112740. Up to 13444 conditions per place. [2024-11-20 13:29:03,897 INFO L140 encePairwiseOnDemand]: 254/320 looper letters, 105 selfloop transitions, 48 changer transitions 0/391 dead transitions. [2024-11-20 13:29:03,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 391 transitions, 1200 flow [2024-11-20 13:29:03,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:29:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 13:29:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1817 transitions. [2024-11-20 13:29:03,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9463541666666667 [2024-11-20 13:29:03,903 INFO L175 Difference]: Start difference. First operand has 300 places, 320 transitions, 668 flow. Second operand 6 states and 1817 transitions. [2024-11-20 13:29:03,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 391 transitions, 1200 flow [2024-11-20 13:29:03,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 391 transitions, 1170 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-20 13:29:03,919 INFO L231 Difference]: Finished difference. Result has 282 places, 319 transitions, 908 flow [2024-11-20 13:29:03,920 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=908, PETRI_PLACES=282, PETRI_TRANSITIONS=319} [2024-11-20 13:29:03,921 INFO L277 CegarLoopForPetriNet]: 300 programPoint places, -18 predicate places. [2024-11-20 13:29:03,922 INFO L471 AbstractCegarLoop]: Abstraction has has 282 places, 319 transitions, 908 flow [2024-11-20 13:29:03,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.16666666666666) internal successors, (1477), 6 states have internal predecessors, (1477), 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) [2024-11-20 13:29:03,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:03,923 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] [2024-11-20 13:29:03,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 13:29:03,924 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2024-11-20 13:29:03,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:03,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1910002428, now seen corresponding path program 1 times [2024-11-20 13:29:03,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:03,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426781545] [2024-11-20 13:29:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:03,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:03,941 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:29:03,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:29:03,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:29:03,962 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:29:03,962 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-11-20 13:29:03,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2024-11-20 13:29:03,963 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2024-11-20 13:29:03,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2024-11-20 13:29:03,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2024-11-20 13:29:03,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2024-11-20 13:29:03,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2024-11-20 13:29:03,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2024-11-20 13:29:03,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2024-11-20 13:29:03,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2024-11-20 13:29:03,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2024-11-20 13:29:03,964 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2024-11-20 13:29:03,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2024-11-20 13:29:03,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2024-11-20 13:29:03,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2024-11-20 13:29:03,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2024-11-20 13:29:03,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2024-11-20 13:29:03,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2024-11-20 13:29:03,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2024-11-20 13:29:03,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2024-11-20 13:29:03,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2024-11-20 13:29:03,965 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2024-11-20 13:29:03,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2024-11-20 13:29:03,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2024-11-20 13:29:03,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2024-11-20 13:29:03,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2024-11-20 13:29:03,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2024-11-20 13:29:03,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2024-11-20 13:29:03,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2024-11-20 13:29:03,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2024-11-20 13:29:03,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2024-11-20 13:29:03,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 13:29:03,967 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-20 13:29:03,968 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:29:03,968 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-20 13:29:04,068 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 13:29:04,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 394 transitions, 828 flow [2024-11-20 13:29:04,140 INFO L124 PetriNetUnfolderBase]: 41/447 cut-off events. [2024-11-20 13:29:04,140 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-20 13:29:04,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 447 events. 41/447 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1828 event pairs, 0 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 376. Up to 12 conditions per place. [2024-11-20 13:29:04,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 394 transitions, 828 flow [2024-11-20 13:29:04,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 369 places, 394 transitions, 828 flow [2024-11-20 13:29:04,158 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:29:04,159 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;@6f9fc345, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:29:04,159 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-20 13:29:04,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:29:04,163 INFO L124 PetriNetUnfolderBase]: 4/71 cut-off events. [2024-11-20 13:29:04,163 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 13:29:04,164 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:29:04,164 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:29:04,164 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2024-11-20 13:29:04,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:29:04,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1632563460, now seen corresponding path program 1 times [2024-11-20 13:29:04,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:29:04,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401881707] [2024-11-20 13:29:04,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:29:04,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:29:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:29:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:29:04,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:29:04,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401881707] [2024-11-20 13:29:04,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401881707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:29:04,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:29:04,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 13:29:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180419044] [2024-11-20 13:29:04,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:29:04,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:29:04,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:29:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:29:04,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:29:04,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 394 [2024-11-20 13:29:04,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 394 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 302.1666666666667) internal successors, (1813), 6 states have internal predecessors, (1813), 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) [2024-11-20 13:29:04,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:29:04,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 394 [2024-11-20 13:29:04,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand