./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 12:12:00,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 12:12:00,544 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-12 12:12:00,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 12:12:00,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 12:12:00,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 12:12:00,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 12:12:00,578 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 12:12:00,579 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 12:12:00,580 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 12:12:00,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 12:12:00,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 12:12:00,581 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 12:12:00,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 12:12:00,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 12:12:00,583 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 12:12:00,584 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 12:12:00,584 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 12:12:00,584 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 12:12:00,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 12:12:00,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 12:12:00,585 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 12:12:00,586 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-12 12:12:00,586 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 12:12:00,586 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 12:12:00,586 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 12:12:00,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 12:12:00,587 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 12:12:00,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 12:12:00,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 12:12:00,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 12:12:00,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:12:00,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 12:12:00,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 12:12:00,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 12:12:00,588 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 12:12:00,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 12:12:00,589 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 12:12:00,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 12:12:00,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 12:12:00,590 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 12:12:00,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963fe2b49296fadf7c892a862a5472be95dcc4e457bf5d1be114d7bd124d5424 [2024-11-12 12:12:00,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 12:12:00,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 12:12:00,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 12:12:00,856 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 12:12:00,856 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 12:12:00,857 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2024-11-12 12:12:02,342 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 12:12:02,601 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 12:12:02,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs-b.i [2024-11-12 12:12:02,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/302989362/6b5c8c475683442696c993c3ead525e7/FLAG878a16aa1 [2024-11-12 12:12:02,628 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/302989362/6b5c8c475683442696c993c3ead525e7 [2024-11-12 12:12:02,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 12:12:02,631 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 12:12:02,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 12:12:02,633 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 12:12:02,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 12:12:02,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:02" (1/1) ... [2024-11-12 12:12:02,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396dec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:02, skipping insertion in model container [2024-11-12 12:12:02,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:02" (1/1) ... [2024-11-12 12:12:02,697 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 12:12:03,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:12:03,141 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 12:12:03,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:12:03,277 INFO L204 MainTranslator]: Completed translation [2024-11-12 12:12:03,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03 WrapperNode [2024-11-12 12:12:03,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 12:12:03,279 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 12:12:03,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 12:12:03,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 12:12:03,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (1/1) ... [2024-11-12 12:12:03,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (1/1) ... [2024-11-12 12:12:03,369 INFO L138 Inliner]: procedures = 171, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 90 [2024-11-12 12:12:03,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 12:12:03,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 12:12:03,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 12:12:03,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 12:12:03,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (1/1) ... [2024-11-12 12:12:03,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (1/1) ... [2024-11-12 12:12:03,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (1/1) ... [2024-11-12 12:12:03,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (1/1) ... [2024-11-12 12:12:03,387 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (1/1) ... [2024-11-12 12:12:03,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (1/1) ... [2024-11-12 12:12:03,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (1/1) ... [2024-11-12 12:12:03,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (1/1) ... [2024-11-12 12:12:03,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 12:12:03,398 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 12:12:03,398 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 12:12:03,398 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 12:12:03,398 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (1/1) ... [2024-11-12 12:12:03,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:12:03,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:12:03,429 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) [2024-11-12 12:12:03,438 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 [2024-11-12 12:12:03,473 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-12 12:12:03,473 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-12 12:12:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 12:12:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-12 12:12:03,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 12:12:03,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 12:12:03,475 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 12:12:03,589 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 12:12:03,591 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 12:12:03,734 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 12:12:03,734 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 12:12:03,846 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 12:12:03,846 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-12 12:12:03,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:03 BoogieIcfgContainer [2024-11-12 12:12:03,847 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 12:12:03,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 12:12:03,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 12:12:03,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 12:12:03,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:12:02" (1/3) ... [2024-11-12 12:12:03,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514cd8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:03, skipping insertion in model container [2024-11-12 12:12:03,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:03" (2/3) ... [2024-11-12 12:12:03,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514cd8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:03, skipping insertion in model container [2024-11-12 12:12:03,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:03" (3/3) ... [2024-11-12 12:12:03,857 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs-b.i [2024-11-12 12:12:03,872 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 12:12:03,873 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-12 12:12:03,873 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 12:12:03,926 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 12:12:03,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 83 transitions, 170 flow [2024-11-12 12:12:03,981 INFO L124 PetriNetUnfolderBase]: 6/92 cut-off events. [2024-11-12 12:12:03,981 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 12:12:03,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 92 events. 6/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 70. Up to 4 conditions per place. [2024-11-12 12:12:03,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 83 transitions, 170 flow [2024-11-12 12:12:03,989 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 83 transitions, 170 flow [2024-11-12 12:12:03,995 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:12:04,001 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;@728839c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:12:04,001 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-12 12:12:04,016 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 12:12:04,016 INFO L124 PetriNetUnfolderBase]: 2/39 cut-off events. [2024-11-12 12:12:04,016 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 12:12:04,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:12:04,017 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:12:04,017 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2024-11-12 12:12:04,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:12:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2108377038, now seen corresponding path program 1 times [2024-11-12 12:12:04,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:12:04,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132695489] [2024-11-12 12:12:04,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:12:04,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:12:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:12:04,145 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 12:12:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:12:04,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 12:12:04,176 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 12:12:04,177 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-12 12:12:04,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2024-11-12 12:12:04,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2024-11-12 12:12:04,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2024-11-12 12:12:04,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2024-11-12 12:12:04,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2024-11-12 12:12:04,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2024-11-12 12:12:04,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2024-11-12 12:12:04,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2024-11-12 12:12:04,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2024-11-12 12:12:04,185 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2024-11-12 12:12:04,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2024-11-12 12:12:04,189 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2024-11-12 12:12:04,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2024-11-12 12:12:04,190 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2024-11-12 12:12:04,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 12:12:04,191 INFO L421 BasicCegarLoop]: Path program histogram: [1] [2024-11-12 12:12:04,198 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 12:12:04,198 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 12:12:04,224 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 12:12:04,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 143 transitions, 296 flow [2024-11-12 12:12:04,272 INFO L124 PetriNetUnfolderBase]: 11/163 cut-off events. [2024-11-12 12:12:04,276 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-12 12:12:04,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 163 events. 11/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 310 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 129. Up to 6 conditions per place. [2024-11-12 12:12:04,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 143 transitions, 296 flow [2024-11-12 12:12:04,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 143 transitions, 296 flow [2024-11-12 12:12:04,285 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:12:04,286 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;@728839c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:12:04,290 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-12 12:12:04,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 12:12:04,299 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2024-11-12 12:12:04,299 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 12:12:04,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:12:04,299 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:12:04,300 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-12 12:12:04,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:12:04,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1302801808, now seen corresponding path program 1 times [2024-11-12 12:12:04,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:12:04,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207098537] [2024-11-12 12:12:04,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:12:04,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:12:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:12:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:12:04,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:12:04,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207098537] [2024-11-12 12:12:04,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207098537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:12:04,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:12:04,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 12:12:04,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073318710] [2024-11-12 12:12:04,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:12:04,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:12:04,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:12:04,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:12:04,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:12:04,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 143 [2024-11-12 12:12:04,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 143 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2024-11-12 12:12:04,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:12:04,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 143 [2024-11-12 12:12:04,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:12:04,718 INFO L124 PetriNetUnfolderBase]: 83/687 cut-off events. [2024-11-12 12:12:04,719 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-12 12:12:04,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 687 events. 83/687 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3818 event pairs, 30 based on Foata normal form. 158/788 useless extension candidates. Maximal degree in co-relation 768. Up to 112 conditions per place. [2024-11-12 12:12:04,728 INFO L140 encePairwiseOnDemand]: 113/143 looper letters, 25 selfloop transitions, 10 changer transitions 0/135 dead transitions. [2024-11-12 12:12:04,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 135 transitions, 355 flow [2024-11-12 12:12:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 12:12:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 12:12:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2024-11-12 12:12:04,740 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8997668997668997 [2024-11-12 12:12:04,741 INFO L175 Difference]: Start difference. First operand has 139 places, 143 transitions, 296 flow. Second operand 3 states and 386 transitions. [2024-11-12 12:12:04,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 135 transitions, 355 flow [2024-11-12 12:12:04,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 135 transitions, 355 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 12:12:04,747 INFO L231 Difference]: Finished difference. Result has 127 places, 130 transitions, 338 flow [2024-11-12 12:12:04,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=127, PETRI_TRANSITIONS=130} [2024-11-12 12:12:04,754 INFO L279 CegarLoopForPetriNet]: 139 programPoint places, -12 predicate places. [2024-11-12 12:12:04,754 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 130 transitions, 338 flow [2024-11-12 12:12:04,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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) [2024-11-12 12:12:04,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:12:04,755 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:12:04,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 12:12:04,756 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-12 12:12:04,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:12:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1038456970, now seen corresponding path program 1 times [2024-11-12 12:12:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:12:04,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795667150] [2024-11-12 12:12:04,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:12:04,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:12:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:12:04,782 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 12:12:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:12:04,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 12:12:04,796 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 12:12:04,797 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-12 12:12:04,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-12 12:12:04,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-12 12:12:04,797 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-12 12:12:04,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-12 12:12:04,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-12 12:12:04,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-12 12:12:04,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-12 12:12:04,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-12 12:12:04,798 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-12 12:12:04,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-12 12:12:04,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-12 12:12:04,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-12 12:12:04,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-12 12:12:04,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-12 12:12:04,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-12 12:12:04,799 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-12 12:12:04,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-12 12:12:04,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-12 12:12:04,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-12 12:12:04,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-12 12:12:04,800 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-12 12:12:04,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 12:12:04,801 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 12:12:04,801 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 12:12:04,801 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-12 12:12:04,843 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 12:12:04,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 203 transitions, 424 flow [2024-11-12 12:12:04,866 INFO L124 PetriNetUnfolderBase]: 16/234 cut-off events. [2024-11-12 12:12:04,866 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-12 12:12:04,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 234 events. 16/234 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 636 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 188. Up to 8 conditions per place. [2024-11-12 12:12:04,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 203 transitions, 424 flow [2024-11-12 12:12:04,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 203 transitions, 424 flow [2024-11-12 12:12:04,873 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:12:04,875 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;@728839c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:12:04,875 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-12 12:12:04,878 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 12:12:04,878 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2024-11-12 12:12:04,878 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 12:12:04,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:12:04,878 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:12:04,880 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-12 12:12:04,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:12:04,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1410328619, now seen corresponding path program 1 times [2024-11-12 12:12:04,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:12:04,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907567755] [2024-11-12 12:12:04,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:12:04,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:12:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:12:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:12:04,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:12:04,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907567755] [2024-11-12 12:12:04,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907567755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:12:04,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:12:04,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 12:12:04,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026779553] [2024-11-12 12:12:04,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:12:04,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:12:04,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:12:04,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:12:04,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:12:04,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 203 [2024-11-12 12:12:04,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 203 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2024-11-12 12:12:04,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:12:04,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 203 [2024-11-12 12:12:04,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:12:05,961 INFO L124 PetriNetUnfolderBase]: 1850/8224 cut-off events. [2024-11-12 12:12:05,962 INFO L125 PetriNetUnfolderBase]: For 580/580 co-relation queries the response was YES. [2024-11-12 12:12:05,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11522 conditions, 8224 events. 1850/8224 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 87982 event pairs, 737 based on Foata normal form. 2158/9539 useless extension candidates. Maximal degree in co-relation 10094. Up to 1856 conditions per place. [2024-11-12 12:12:06,018 INFO L140 encePairwiseOnDemand]: 159/203 looper letters, 38 selfloop transitions, 15 changer transitions 0/194 dead transitions. [2024-11-12 12:12:06,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 194 transitions, 524 flow [2024-11-12 12:12:06,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 12:12:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 12:12:06,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2024-11-12 12:12:06,024 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2024-11-12 12:12:06,025 INFO L175 Difference]: Start difference. First operand has 197 places, 203 transitions, 424 flow. Second operand 3 states and 546 transitions. [2024-11-12 12:12:06,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 194 transitions, 524 flow [2024-11-12 12:12:06,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 194 transitions, 520 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-12 12:12:06,031 INFO L231 Difference]: Finished difference. Result has 179 places, 186 transitions, 490 flow [2024-11-12 12:12:06,031 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=179, PETRI_TRANSITIONS=186} [2024-11-12 12:12:06,032 INFO L279 CegarLoopForPetriNet]: 197 programPoint places, -18 predicate places. [2024-11-12 12:12:06,033 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 186 transitions, 490 flow [2024-11-12 12:12:06,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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) [2024-11-12 12:12:06,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:12:06,034 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:12:06,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 12:12:06,035 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-11-12 12:12:06,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:12:06,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1601818571, now seen corresponding path program 1 times [2024-11-12 12:12:06,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:12:06,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331181520] [2024-11-12 12:12:06,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:12:06,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:12:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:12:06,047 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 12:12:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:12:06,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 12:12:06,057 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 12:12:06,058 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-11-12 12:12:06,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2024-11-12 12:12:06,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2024-11-12 12:12:06,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2024-11-12 12:12:06,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2024-11-12 12:12:06,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2024-11-12 12:12:06,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2024-11-12 12:12:06,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2024-11-12 12:12:06,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2024-11-12 12:12:06,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2024-11-12 12:12:06,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2024-11-12 12:12:06,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2024-11-12 12:12:06,059 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2024-11-12 12:12:06,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2024-11-12 12:12:06,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2024-11-12 12:12:06,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2024-11-12 12:12:06,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2024-11-12 12:12:06,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2024-11-12 12:12:06,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2024-11-12 12:12:06,060 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2024-11-12 12:12:06,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2024-11-12 12:12:06,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2024-11-12 12:12:06,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2024-11-12 12:12:06,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2024-11-12 12:12:06,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2024-11-12 12:12:06,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2024-11-12 12:12:06,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2024-11-12 12:12:06,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2024-11-12 12:12:06,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2024-11-12 12:12:06,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 12:12:06,062 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 12:12:06,063 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 12:12:06,063 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-12 12:12:06,097 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 12:12:06,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 255 places, 263 transitions, 554 flow [2024-11-12 12:12:06,127 INFO L124 PetriNetUnfolderBase]: 21/305 cut-off events. [2024-11-12 12:12:06,128 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-12 12:12:06,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 305 events. 21/305 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 987 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 247. Up to 10 conditions per place. [2024-11-12 12:12:06,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 255 places, 263 transitions, 554 flow [2024-11-12 12:12:06,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 255 places, 263 transitions, 554 flow [2024-11-12 12:12:06,135 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:12:06,135 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;@728839c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:12:06,135 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-11-12 12:12:06,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 12:12:06,138 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2024-11-12 12:12:06,138 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 12:12:06,138 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:12:06,138 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:12:06,138 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-11-12 12:12:06,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:12:06,139 INFO L85 PathProgramCache]: Analyzing trace with hash -2010798746, now seen corresponding path program 1 times [2024-11-12 12:12:06,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:12:06,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023116270] [2024-11-12 12:12:06,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:12:06,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:12:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:12:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:12:06,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:12:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023116270] [2024-11-12 12:12:06,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023116270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:12:06,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:12:06,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 12:12:06,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341163651] [2024-11-12 12:12:06,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:12:06,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:12:06,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:12:06,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:12:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:12:06,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 263 [2024-11-12 12:12:06,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 263 transitions, 554 flow. Second operand has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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) [2024-11-12 12:12:06,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:12:06,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 263 [2024-11-12 12:12:06,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:12:17,970 INFO L124 PetriNetUnfolderBase]: 31456/99198 cut-off events. [2024-11-12 12:12:17,971 INFO L125 PetriNetUnfolderBase]: For 11523/11523 co-relation queries the response was YES. [2024-11-12 12:12:18,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148681 conditions, 99198 events. 31456/99198 cut-off events. For 11523/11523 co-relation queries the response was YES. Maximal size of possible extension queue 3035. Compared 1433545 event pairs, 13027 based on Foata normal form. 28296/116261 useless extension candidates. Maximal degree in co-relation 129518. Up to 27457 conditions per place. [2024-11-12 12:12:19,693 INFO L140 encePairwiseOnDemand]: 205/263 looper letters, 51 selfloop transitions, 20 changer transitions 0/253 dead transitions. [2024-11-12 12:12:19,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 253 transitions, 697 flow [2024-11-12 12:12:19,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 12:12:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 12:12:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2024-11-12 12:12:19,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8948035487959443 [2024-11-12 12:12:19,696 INFO L175 Difference]: Start difference. First operand has 255 places, 263 transitions, 554 flow. Second operand 3 states and 706 transitions. [2024-11-12 12:12:19,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 253 transitions, 697 flow [2024-11-12 12:12:19,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 253 transitions, 685 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-12 12:12:19,706 INFO L231 Difference]: Finished difference. Result has 231 places, 242 transitions, 642 flow [2024-11-12 12:12:19,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=642, PETRI_PLACES=231, PETRI_TRANSITIONS=242} [2024-11-12 12:12:19,707 INFO L279 CegarLoopForPetriNet]: 255 programPoint places, -24 predicate places. [2024-11-12 12:12:19,707 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 242 transitions, 642 flow [2024-11-12 12:12:19,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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) [2024-11-12 12:12:19,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:12:19,708 INFO L206 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] [2024-11-12 12:12:19,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 12:12:19,709 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-11-12 12:12:19,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:12:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1394010081, now seen corresponding path program 1 times [2024-11-12 12:12:19,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:12:19,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089177916] [2024-11-12 12:12:19,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:12:19,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:12:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:12:19,721 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 12:12:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:12:19,732 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 12:12:19,732 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 12:12:19,732 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2024-11-12 12:12:19,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2024-11-12 12:12:19,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2024-11-12 12:12:19,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2024-11-12 12:12:19,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2024-11-12 12:12:19,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2024-11-12 12:12:19,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2024-11-12 12:12:19,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2024-11-12 12:12:19,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2024-11-12 12:12:19,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2024-11-12 12:12:19,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2024-11-12 12:12:19,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2024-11-12 12:12:19,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2024-11-12 12:12:19,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2024-11-12 12:12:19,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2024-11-12 12:12:19,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2024-11-12 12:12:19,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2024-11-12 12:12:19,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2024-11-12 12:12:19,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2024-11-12 12:12:19,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2024-11-12 12:12:19,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2024-11-12 12:12:19,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2024-11-12 12:12:19,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2024-11-12 12:12:19,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2024-11-12 12:12:19,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2024-11-12 12:12:19,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2024-11-12 12:12:19,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2024-11-12 12:12:19,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2024-11-12 12:12:19,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2024-11-12 12:12:19,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2024-11-12 12:12:19,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2024-11-12 12:12:19,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2024-11-12 12:12:19,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2024-11-12 12:12:19,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2024-11-12 12:12:19,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2024-11-12 12:12:19,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2024-11-12 12:12:19,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 12:12:19,737 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 12:12:19,738 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 12:12:19,738 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-12 12:12:19,773 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-12 12:12:19,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 323 transitions, 686 flow [2024-11-12 12:12:19,811 INFO L124 PetriNetUnfolderBase]: 26/376 cut-off events. [2024-11-12 12:12:19,811 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-12 12:12:19,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 376 events. 26/376 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1332 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 318. Up to 12 conditions per place. [2024-11-12 12:12:19,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 323 transitions, 686 flow [2024-11-12 12:12:19,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 323 transitions, 686 flow [2024-11-12 12:12:19,821 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:12:19,823 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;@728839c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:12:19,824 INFO L334 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-11-12 12:12:19,826 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 12:12:19,826 INFO L124 PetriNetUnfolderBase]: 2/40 cut-off events. [2024-11-12 12:12:19,826 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 12:12:19,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:12:19,827 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:12:19,827 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2024-11-12 12:12:19,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:12:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1331699295, now seen corresponding path program 1 times [2024-11-12 12:12:19,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:12:19,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544164654] [2024-11-12 12:12:19,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:12:19,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:12:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:12:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:12:19,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:12:19,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544164654] [2024-11-12 12:12:19,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544164654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:12:19,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:12:19,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 12:12:19,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733841522] [2024-11-12 12:12:19,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:12:19,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:12:19,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:12:19,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:12:19,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:12:19,928 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 323 [2024-11-12 12:12:19,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 323 transitions, 686 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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) [2024-11-12 12:12:19,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:12:19,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 323 [2024-11-12 12:12:19,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand