./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/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 61a67961 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/29_conditionals_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:47:49,804 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:47:49,868 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 16:47:49,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:47:49,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:47:49,899 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:47:49,899 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:47:49,900 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:47:49,901 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:47:49,902 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:47:49,903 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:47:49,903 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:47:49,903 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:47:49,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:47:49,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:47:49,904 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:47:49,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:47:49,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:47:49,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:47:49,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:47:49,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:47:49,908 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:47:49,908 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 16:47:49,908 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:47:49,908 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 16:47:49,909 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:47:49,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:47:49,909 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:47:49,909 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:47:49,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:47:49,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:47:49,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:47:49,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:47:49,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:47:49,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:47:49,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:47:49,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:47:49,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:47:49,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:47:49,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:47:49,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:47:49,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2024-10-14 16:47:50,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:47:50,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:47:50,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:47:50,205 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:47:50,205 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:47:50,206 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-10-14 16:47:51,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:47:51,744 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:47:51,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-10-14 16:47:51,767 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/198ab92c4/7d4af3c9b2474149ac7b82c99196b7ff/FLAGcfd1bc665 [2024-10-14 16:47:51,780 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/198ab92c4/7d4af3c9b2474149ac7b82c99196b7ff [2024-10-14 16:47:51,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:47:51,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:47:51,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:47:51,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:47:51,794 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:47:51,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:51" (1/1) ... [2024-10-14 16:47:51,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e64f711 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:51, skipping insertion in model container [2024-10-14 16:47:51,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:47:51" (1/1) ... [2024-10-14 16:47:51,860 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:47:52,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:47:52,066 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:47:52,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:47:52,118 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:47:52,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52 WrapperNode [2024-10-14 16:47:52,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:47:52,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:47:52,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:47:52,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:47:52,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (1/1) ... [2024-10-14 16:47:52,134 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (1/1) ... [2024-10-14 16:47:52,148 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 72 [2024-10-14 16:47:52,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:47:52,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:47:52,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:47:52,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:47:52,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (1/1) ... [2024-10-14 16:47:52,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (1/1) ... [2024-10-14 16:47:52,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (1/1) ... [2024-10-14 16:47:52,157 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (1/1) ... [2024-10-14 16:47:52,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (1/1) ... [2024-10-14 16:47:52,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (1/1) ... [2024-10-14 16:47:52,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (1/1) ... [2024-10-14 16:47:52,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (1/1) ... [2024-10-14 16:47:52,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:47:52,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:47:52,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:47:52,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:47:52,166 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (1/1) ... [2024-10-14 16:47:52,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:47:52,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:47:52,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 16:47:52,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 16:47:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 16:47:52,235 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 16:47:52,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:47:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 16:47:52,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:47:52,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:47:52,237 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 16:47:52,327 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:47:52,329 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:47:52,516 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 16:47:52,516 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:47:52,569 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:47:52,570 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-14 16:47:52,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:52 BoogieIcfgContainer [2024-10-14 16:47:52,570 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:47:52,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:47:52,572 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:47:52,577 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:47:52,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:47:51" (1/3) ... [2024-10-14 16:47:52,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c58aa90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:52, skipping insertion in model container [2024-10-14 16:47:52,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:47:52" (2/3) ... [2024-10-14 16:47:52,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c58aa90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:47:52, skipping insertion in model container [2024-10-14 16:47:52,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:47:52" (3/3) ... [2024-10-14 16:47:52,579 INFO L112 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2024-10-14 16:47:52,594 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:47:52,594 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-14 16:47:52,594 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 16:47:52,632 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:47:52,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 59 transitions, 122 flow [2024-10-14 16:47:52,705 INFO L124 PetriNetUnfolderBase]: 7/68 cut-off events. [2024-10-14 16:47:52,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:47:52,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 68 events. 7/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 47. Up to 4 conditions per place. [2024-10-14 16:47:52,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 59 transitions, 122 flow [2024-10-14 16:47:52,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 59 transitions, 122 flow [2024-10-14 16:47:52,731 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:47:52,738 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;@439eda75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:47:52,738 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-14 16:47:52,752 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:47:52,753 INFO L124 PetriNetUnfolderBase]: 2/38 cut-off events. [2024-10-14 16:47:52,753 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 16:47:52,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:52,754 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:47:52,755 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-14 16:47:52,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash 237592934, now seen corresponding path program 1 times [2024-10-14 16:47:52,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:52,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532585558] [2024-10-14 16:47:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:52,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:52,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:47:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:52,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:47:52,903 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:47:52,904 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-14 16:47:52,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-10-14 16:47:52,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-10-14 16:47:52,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-10-14 16:47:52,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-10-14 16:47:52,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-10-14 16:47:52,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-10-14 16:47:52,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-10-14 16:47:52,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-10-14 16:47:52,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:47:52,908 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-14 16:47:52,910 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:47:52,911 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 16:47:52,946 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:47:52,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 96 transitions, 202 flow [2024-10-14 16:47:52,970 INFO L124 PetriNetUnfolderBase]: 13/116 cut-off events. [2024-10-14 16:47:52,970 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 16:47:52,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 116 events. 13/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 217 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 83. Up to 6 conditions per place. [2024-10-14 16:47:52,972 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 96 transitions, 202 flow [2024-10-14 16:47:52,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 96 transitions, 202 flow [2024-10-14 16:47:52,974 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:47:52,975 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;@439eda75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:47:52,975 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-14 16:47:52,991 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:47:52,992 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-14 16:47:52,992 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 16:47:52,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:52,992 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] [2024-10-14 16:47:52,992 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 16:47:52,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:52,993 INFO L85 PathProgramCache]: Analyzing trace with hash -198220020, now seen corresponding path program 1 times [2024-10-14 16:47:52,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:52,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144498444] [2024-10-14 16:47:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:52,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:47:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:47:53,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:47:53,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144498444] [2024-10-14 16:47:53,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144498444] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:47:53,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:47:53,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:47:53,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095458305] [2024-10-14 16:47:53,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:47:53,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:47:53,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:47:53,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:47:53,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:47:53,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 96 [2024-10-14 16:47:53,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 96 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:47:53,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:47:53,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 96 [2024-10-14 16:47:53,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:47:53,149 INFO L124 PetriNetUnfolderBase]: 18/163 cut-off events. [2024-10-14 16:47:53,149 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-14 16:47:53,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 163 events. 18/163 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 438 event pairs, 6 based on Foata normal form. 27/173 useless extension candidates. Maximal degree in co-relation 54. Up to 19 conditions per place. [2024-10-14 16:47:53,152 INFO L140 encePairwiseOnDemand]: 82/96 looper letters, 6 selfloop transitions, 0 changer transitions 0/75 dead transitions. [2024-10-14 16:47:53,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 172 flow [2024-10-14 16:47:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:47:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:47:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 168 transitions. [2024-10-14 16:47:53,166 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.875 [2024-10-14 16:47:53,168 INFO L175 Difference]: Start difference. First operand has 90 places, 96 transitions, 202 flow. Second operand 2 states and 168 transitions. [2024-10-14 16:47:53,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 172 flow [2024-10-14 16:47:53,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 75 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 16:47:53,175 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 160 flow [2024-10-14 16:47:53,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=160, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2024-10-14 16:47:53,183 INFO L277 CegarLoopForPetriNet]: 90 programPoint places, -15 predicate places. [2024-10-14 16:47:53,183 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 160 flow [2024-10-14 16:47:53,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:47:53,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:53,186 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:47:53,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:47:53,187 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 16:47:53,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:53,187 INFO L85 PathProgramCache]: Analyzing trace with hash -821886563, now seen corresponding path program 1 times [2024-10-14 16:47:53,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:53,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077995900] [2024-10-14 16:47:53,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:53,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:53,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:47:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:53,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:47:53,219 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:47:53,219 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-14 16:47:53,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-10-14 16:47:53,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-10-14 16:47:53,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-10-14 16:47:53,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-10-14 16:47:53,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-10-14 16:47:53,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-10-14 16:47:53,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-10-14 16:47:53,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-10-14 16:47:53,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-10-14 16:47:53,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-10-14 16:47:53,221 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-10-14 16:47:53,222 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-10-14 16:47:53,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 16:47:53,222 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 16:47:53,223 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:47:53,223 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 16:47:53,256 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:47:53,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 133 transitions, 284 flow [2024-10-14 16:47:53,278 INFO L124 PetriNetUnfolderBase]: 19/164 cut-off events. [2024-10-14 16:47:53,279 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 16:47:53,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 164 events. 19/164 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 407 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 120. Up to 8 conditions per place. [2024-10-14 16:47:53,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 133 transitions, 284 flow [2024-10-14 16:47:53,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 133 transitions, 284 flow [2024-10-14 16:47:53,282 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:47:53,283 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;@439eda75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:47:53,283 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-14 16:47:53,288 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:47:53,288 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-14 16:47:53,289 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 16:47:53,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:53,289 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] [2024-10-14 16:47:53,289 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 16:47:53,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash 708964904, now seen corresponding path program 1 times [2024-10-14 16:47:53,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:53,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017171942] [2024-10-14 16:47:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:53,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:47:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:47:53,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:47:53,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017171942] [2024-10-14 16:47:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017171942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:47:53,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:47:53,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:47:53,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021456446] [2024-10-14 16:47:53,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:47:53,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:47:53,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:47:53,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:47:53,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:47:53,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 133 [2024-10-14 16:47:53,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 133 transitions, 284 flow. Second operand has 2 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:47:53,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:47:53,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 133 [2024-10-14 16:47:53,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:47:53,422 INFO L124 PetriNetUnfolderBase]: 81/520 cut-off events. [2024-10-14 16:47:53,422 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-10-14 16:47:53,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 520 events. 81/520 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2708 event pairs, 42 based on Foata normal form. 108/572 useless extension candidates. Maximal degree in co-relation 189. Up to 82 conditions per place. [2024-10-14 16:47:53,431 INFO L140 encePairwiseOnDemand]: 113/133 looper letters, 9 selfloop transitions, 0 changer transitions 0/104 dead transitions. [2024-10-14 16:47:53,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 104 transitions, 244 flow [2024-10-14 16:47:53,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:47:53,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:47:53,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 231 transitions. [2024-10-14 16:47:53,435 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.868421052631579 [2024-10-14 16:47:53,436 INFO L175 Difference]: Start difference. First operand has 124 places, 133 transitions, 284 flow. Second operand 2 states and 231 transitions. [2024-10-14 16:47:53,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 104 transitions, 244 flow [2024-10-14 16:47:53,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 104 transitions, 242 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 16:47:53,438 INFO L231 Difference]: Finished difference. Result has 103 places, 104 transitions, 224 flow [2024-10-14 16:47:53,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=224, PETRI_PLACES=103, PETRI_TRANSITIONS=104} [2024-10-14 16:47:53,439 INFO L277 CegarLoopForPetriNet]: 124 programPoint places, -21 predicate places. [2024-10-14 16:47:53,439 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 104 transitions, 224 flow [2024-10-14 16:47:53,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:47:53,440 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:53,440 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] [2024-10-14 16:47:53,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 16:47:53,440 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 16:47:53,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash -968667, now seen corresponding path program 1 times [2024-10-14 16:47:53,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:53,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989931494] [2024-10-14 16:47:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:53,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:53,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:47:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:53,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:47:53,474 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:47:53,474 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-14 16:47:53,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-10-14 16:47:53,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-10-14 16:47:53,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-10-14 16:47:53,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-10-14 16:47:53,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-10-14 16:47:53,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-10-14 16:47:53,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-10-14 16:47:53,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-10-14 16:47:53,479 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-10-14 16:47:53,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-10-14 16:47:53,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-10-14 16:47:53,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-10-14 16:47:53,480 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-10-14 16:47:53,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-10-14 16:47:53,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-10-14 16:47:53,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-10-14 16:47:53,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 16:47:53,481 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 16:47:53,482 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:47:53,485 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-14 16:47:53,518 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:47:53,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 170 transitions, 368 flow [2024-10-14 16:47:53,563 INFO L124 PetriNetUnfolderBase]: 25/212 cut-off events. [2024-10-14 16:47:53,563 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 16:47:53,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 212 events. 25/212 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 598 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 172. Up to 10 conditions per place. [2024-10-14 16:47:53,567 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 170 transitions, 368 flow [2024-10-14 16:47:53,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 170 transitions, 368 flow [2024-10-14 16:47:53,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:47:53,571 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;@439eda75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:47:53,571 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-14 16:47:53,574 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:47:53,575 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-14 16:47:53,575 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 16:47:53,575 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:53,575 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] [2024-10-14 16:47:53,575 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 16:47:53,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:53,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1858000088, now seen corresponding path program 1 times [2024-10-14 16:47:53,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:53,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520968661] [2024-10-14 16:47:53,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:53,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:47:53,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:47:53,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:47:53,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520968661] [2024-10-14 16:47:53,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520968661] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:47:53,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:47:53,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:47:53,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672232846] [2024-10-14 16:47:53,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:47:53,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:47:53,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:47:53,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:47:53,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:47:53,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 170 [2024-10-14 16:47:53,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 170 transitions, 368 flow. Second operand has 2 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:47:53,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:47:53,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 170 [2024-10-14 16:47:53,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:47:53,813 INFO L124 PetriNetUnfolderBase]: 324/1645 cut-off events. [2024-10-14 16:47:53,816 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2024-10-14 16:47:53,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 1645 events. 324/1645 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 12428 event pairs, 204 based on Foata normal form. 405/1877 useless extension candidates. Maximal degree in co-relation 653. Up to 325 conditions per place. [2024-10-14 16:47:53,837 INFO L140 encePairwiseOnDemand]: 144/170 looper letters, 12 selfloop transitions, 0 changer transitions 0/133 dead transitions. [2024-10-14 16:47:53,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 318 flow [2024-10-14 16:47:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:47:53,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:47:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 294 transitions. [2024-10-14 16:47:53,840 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8647058823529412 [2024-10-14 16:47:53,842 INFO L175 Difference]: Start difference. First operand has 158 places, 170 transitions, 368 flow. Second operand 2 states and 294 transitions. [2024-10-14 16:47:53,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 318 flow [2024-10-14 16:47:53,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 133 transitions, 312 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-14 16:47:53,846 INFO L231 Difference]: Finished difference. Result has 131 places, 133 transitions, 288 flow [2024-10-14 16:47:53,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=170, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=288, PETRI_PLACES=131, PETRI_TRANSITIONS=133} [2024-10-14 16:47:53,848 INFO L277 CegarLoopForPetriNet]: 158 programPoint places, -27 predicate places. [2024-10-14 16:47:53,849 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 133 transitions, 288 flow [2024-10-14 16:47:53,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:47:53,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:53,849 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] [2024-10-14 16:47:53,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 16:47:53,850 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 16:47:53,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:53,850 INFO L85 PathProgramCache]: Analyzing trace with hash -139374189, now seen corresponding path program 1 times [2024-10-14 16:47:53,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:53,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121469901] [2024-10-14 16:47:53,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:53,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:53,871 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:47:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:53,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:47:53,889 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:47:53,890 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-10-14 16:47:53,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-10-14 16:47:53,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-10-14 16:47:53,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-10-14 16:47:53,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-10-14 16:47:53,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-10-14 16:47:53,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-10-14 16:47:53,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-10-14 16:47:53,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-10-14 16:47:53,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-10-14 16:47:53,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-10-14 16:47:53,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-10-14 16:47:53,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-10-14 16:47:53,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-10-14 16:47:53,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-10-14 16:47:53,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-10-14 16:47:53,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-10-14 16:47:53,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-10-14 16:47:53,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-10-14 16:47:53,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-10-14 16:47:53,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-10-14 16:47:53,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 16:47:53,895 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 16:47:53,895 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:47:53,895 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-14 16:47:53,931 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:47:53,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 207 transitions, 454 flow [2024-10-14 16:47:53,973 INFO L124 PetriNetUnfolderBase]: 31/260 cut-off events. [2024-10-14 16:47:53,973 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-14 16:47:53,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 260 events. 31/260 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 784 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 225. Up to 12 conditions per place. [2024-10-14 16:47:53,977 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 207 transitions, 454 flow [2024-10-14 16:47:53,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 207 transitions, 454 flow [2024-10-14 16:47:53,981 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:47:53,981 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;@439eda75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:47:53,982 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-14 16:47:53,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:47:53,987 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-14 16:47:53,987 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 16:47:53,987 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:53,987 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] [2024-10-14 16:47:53,988 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-14 16:47:53,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:53,989 INFO L85 PathProgramCache]: Analyzing trace with hash -66149728, now seen corresponding path program 1 times [2024-10-14 16:47:53,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:53,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340471503] [2024-10-14 16:47:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:53,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:47:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:47:54,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:47:54,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340471503] [2024-10-14 16:47:54,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340471503] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:47:54,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:47:54,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:47:54,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59517380] [2024-10-14 16:47:54,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:47:54,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:47:54,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:47:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:47:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:47:54,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 207 [2024-10-14 16:47:54,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 207 transitions, 454 flow. Second operand has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:47:54,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:47:54,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 207 [2024-10-14 16:47:54,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:47:54,767 INFO L124 PetriNetUnfolderBase]: 1215/5182 cut-off events. [2024-10-14 16:47:54,768 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2024-10-14 16:47:54,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7072 conditions, 5182 events. 1215/5182 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 49845 event pairs, 852 based on Foata normal form. 1458/6116 useless extension candidates. Maximal degree in co-relation 2183. Up to 1216 conditions per place. [2024-10-14 16:47:54,846 INFO L140 encePairwiseOnDemand]: 175/207 looper letters, 15 selfloop transitions, 0 changer transitions 0/162 dead transitions. [2024-10-14 16:47:54,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 162 transitions, 394 flow [2024-10-14 16:47:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:47:54,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:47:54,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 357 transitions. [2024-10-14 16:47:54,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8623188405797102 [2024-10-14 16:47:54,849 INFO L175 Difference]: Start difference. First operand has 192 places, 207 transitions, 454 flow. Second operand 2 states and 357 transitions. [2024-10-14 16:47:54,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 162 transitions, 394 flow [2024-10-14 16:47:54,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 162 transitions, 382 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-14 16:47:54,858 INFO L231 Difference]: Finished difference. Result has 159 places, 162 transitions, 352 flow [2024-10-14 16:47:54,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=352, PETRI_PLACES=159, PETRI_TRANSITIONS=162} [2024-10-14 16:47:54,860 INFO L277 CegarLoopForPetriNet]: 192 programPoint places, -33 predicate places. [2024-10-14 16:47:54,860 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 162 transitions, 352 flow [2024-10-14 16:47:54,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:47:54,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:54,860 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:47:54,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 16:47:54,861 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)] === [2024-10-14 16:47:54,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:54,861 INFO L85 PathProgramCache]: Analyzing trace with hash 2139381796, now seen corresponding path program 1 times [2024-10-14 16:47:54,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:54,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464317751] [2024-10-14 16:47:54,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:54,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:54,879 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:47:54,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:54,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:47:54,891 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:47:54,893 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-10-14 16:47:54,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2024-10-14 16:47:54,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2024-10-14 16:47:54,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2024-10-14 16:47:54,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2024-10-14 16:47:54,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2024-10-14 16:47:54,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2024-10-14 16:47:54,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2024-10-14 16:47:54,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2024-10-14 16:47:54,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2024-10-14 16:47:54,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2024-10-14 16:47:54,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2024-10-14 16:47:54,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2024-10-14 16:47:54,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2024-10-14 16:47:54,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2024-10-14 16:47:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2024-10-14 16:47:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2024-10-14 16:47:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2024-10-14 16:47:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2024-10-14 16:47:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2024-10-14 16:47:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2024-10-14 16:47:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2024-10-14 16:47:54,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2024-10-14 16:47:54,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2024-10-14 16:47:54,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2024-10-14 16:47:54,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 16:47:54,898 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 16:47:54,898 WARN L239 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:47:54,898 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-10-14 16:47:54,931 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:47:54,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 244 transitions, 542 flow [2024-10-14 16:47:54,960 INFO L124 PetriNetUnfolderBase]: 37/308 cut-off events. [2024-10-14 16:47:54,960 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-14 16:47:54,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 308 events. 37/308 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 951 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 279. Up to 14 conditions per place. [2024-10-14 16:47:54,965 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 244 transitions, 542 flow [2024-10-14 16:47:54,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 244 transitions, 542 flow [2024-10-14 16:47:54,968 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:47:54,969 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;@439eda75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:47:54,969 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-14 16:47:54,971 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:47:54,973 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-14 16:47:54,973 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 16:47:54,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:54,973 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] [2024-10-14 16:47:54,973 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-14 16:47:54,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:54,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1748449284, now seen corresponding path program 1 times [2024-10-14 16:47:54,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:54,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794129032] [2024-10-14 16:47:54,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:54,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:47:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:47:55,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:47:55,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794129032] [2024-10-14 16:47:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794129032] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:47:55,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:47:55,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:47:55,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677988652] [2024-10-14 16:47:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:47:55,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:47:55,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:47:55,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:47:55,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:47:55,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 244 [2024-10-14 16:47:55,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 244 transitions, 542 flow. Second operand has 2 states, 2 states have (on average 183.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:47:55,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:47:55,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 244 [2024-10-14 16:47:55,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:47:57,413 INFO L124 PetriNetUnfolderBase]: 4374/16279 cut-off events. [2024-10-14 16:47:57,413 INFO L125 PetriNetUnfolderBase]: For 10297/10297 co-relation queries the response was YES. [2024-10-14 16:47:57,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23030 conditions, 16279 events. 4374/16279 cut-off events. For 10297/10297 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 186575 event pairs, 3282 based on Foata normal form. 5103/19805 useless extension candidates. Maximal degree in co-relation 7178. Up to 4375 conditions per place. [2024-10-14 16:47:57,639 INFO L140 encePairwiseOnDemand]: 206/244 looper letters, 18 selfloop transitions, 0 changer transitions 0/191 dead transitions. [2024-10-14 16:47:57,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 191 transitions, 472 flow [2024-10-14 16:47:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:47:57,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:47:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 420 transitions. [2024-10-14 16:47:57,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.860655737704918 [2024-10-14 16:47:57,641 INFO L175 Difference]: Start difference. First operand has 226 places, 244 transitions, 542 flow. Second operand 2 states and 420 transitions. [2024-10-14 16:47:57,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 191 transitions, 472 flow [2024-10-14 16:47:57,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 191 transitions, 452 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-10-14 16:47:57,733 INFO L231 Difference]: Finished difference. Result has 187 places, 191 transitions, 416 flow [2024-10-14 16:47:57,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=416, PETRI_PLACES=187, PETRI_TRANSITIONS=191} [2024-10-14 16:47:57,738 INFO L277 CegarLoopForPetriNet]: 226 programPoint places, -39 predicate places. [2024-10-14 16:47:57,738 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 191 transitions, 416 flow [2024-10-14 16:47:57,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 183.0) internal successors, (366), 2 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:47:57,740 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:57,740 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:47:57,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 16:47:57,740 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)] === [2024-10-14 16:47:57,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:57,741 INFO L85 PathProgramCache]: Analyzing trace with hash 858640349, now seen corresponding path program 1 times [2024-10-14 16:47:57,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:57,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799299824] [2024-10-14 16:47:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:57,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:57,762 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:47:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:47:57,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:47:57,786 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:47:57,787 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-10-14 16:47:57,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2024-10-14 16:47:57,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2024-10-14 16:47:57,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2024-10-14 16:47:57,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2024-10-14 16:47:57,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2024-10-14 16:47:57,787 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2024-10-14 16:47:57,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2024-10-14 16:47:57,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2024-10-14 16:47:57,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2024-10-14 16:47:57,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2024-10-14 16:47:57,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2024-10-14 16:47:57,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2024-10-14 16:47:57,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2024-10-14 16:47:57,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2024-10-14 16:47:57,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2024-10-14 16:47:57,788 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2024-10-14 16:47:57,789 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2024-10-14 16:47:57,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2024-10-14 16:47:57,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2024-10-14 16:47:57,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2024-10-14 16:47:57,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2024-10-14 16:47:57,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2024-10-14 16:47:57,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2024-10-14 16:47:57,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2024-10-14 16:47:57,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2024-10-14 16:47:57,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2024-10-14 16:47:57,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2024-10-14 16:47:57,792 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2024-10-14 16:47:57,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 16:47:57,792 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 16:47:57,793 WARN L239 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:47:57,793 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2024-10-14 16:47:57,836 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:47:57,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 281 transitions, 632 flow [2024-10-14 16:47:57,882 INFO L124 PetriNetUnfolderBase]: 43/356 cut-off events. [2024-10-14 16:47:57,882 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-14 16:47:57,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 356 events. 43/356 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1153 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 334. Up to 16 conditions per place. [2024-10-14 16:47:57,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 260 places, 281 transitions, 632 flow [2024-10-14 16:47:57,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 281 transitions, 632 flow [2024-10-14 16:47:57,891 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:47:57,891 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;@439eda75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:47:57,892 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-10-14 16:47:57,895 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:47:57,895 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-14 16:47:57,895 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 16:47:57,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:47:57,896 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] [2024-10-14 16:47:57,896 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-14 16:47:57,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:47:57,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2105285244, now seen corresponding path program 1 times [2024-10-14 16:47:57,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:47:57,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100910723] [2024-10-14 16:47:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:47:57,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:47:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:47:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:47:57,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:47:57,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100910723] [2024-10-14 16:47:57,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100910723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:47:57,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:47:57,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:47:57,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956303965] [2024-10-14 16:47:57,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:47:57,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:47:57,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:47:57,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:47:57,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:47:57,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 281 [2024-10-14 16:47:57,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 281 transitions, 632 flow. Second operand has 2 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:47:57,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:47:57,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 281 [2024-10-14 16:47:57,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:48:07,078 INFO L124 PetriNetUnfolderBase]: 15309/51028 cut-off events. [2024-10-14 16:48:07,078 INFO L125 PetriNetUnfolderBase]: For 42373/42373 co-relation queries the response was YES. [2024-10-14 16:48:08,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74547 conditions, 51028 events. 15309/51028 cut-off events. For 42373/42373 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 672864 event pairs, 12030 based on Foata normal form. 17496/63788 useless extension candidates. Maximal degree in co-relation 23378. Up to 15310 conditions per place. [2024-10-14 16:48:08,373 INFO L140 encePairwiseOnDemand]: 237/281 looper letters, 21 selfloop transitions, 0 changer transitions 0/220 dead transitions. [2024-10-14 16:48:08,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 220 transitions, 552 flow [2024-10-14 16:48:08,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:48:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 16:48:08,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 483 transitions. [2024-10-14 16:48:08,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8594306049822064 [2024-10-14 16:48:08,375 INFO L175 Difference]: Start difference. First operand has 260 places, 281 transitions, 632 flow. Second operand 2 states and 483 transitions. [2024-10-14 16:48:08,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 220 transitions, 552 flow [2024-10-14 16:48:08,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 220 transitions, 522 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-10-14 16:48:08,394 INFO L231 Difference]: Finished difference. Result has 215 places, 220 transitions, 480 flow [2024-10-14 16:48:08,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=480, PETRI_PLACES=215, PETRI_TRANSITIONS=220} [2024-10-14 16:48:08,395 INFO L277 CegarLoopForPetriNet]: 260 programPoint places, -45 predicate places. [2024-10-14 16:48:08,395 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 220 transitions, 480 flow [2024-10-14 16:48:08,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:48:08,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:08,396 INFO L204 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:48:08,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 16:48:08,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-14 16:48:08,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:08,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1612359139, now seen corresponding path program 1 times [2024-10-14 16:48:08,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:08,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941117912] [2024-10-14 16:48:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:08,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:48:08,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 16:48:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 16:48:08,429 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 16:48:08,430 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 16:48:08,430 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-10-14 16:48:08,433 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2024-10-14 16:48:08,433 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2024-10-14 16:48:08,433 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2024-10-14 16:48:08,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2024-10-14 16:48:08,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2024-10-14 16:48:08,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 16:48:08,436 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 16:48:08,436 WARN L239 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 16:48:08,436 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2024-10-14 16:48:08,476 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 16:48:08,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 318 transitions, 724 flow [2024-10-14 16:48:08,515 INFO L124 PetriNetUnfolderBase]: 49/404 cut-off events. [2024-10-14 16:48:08,516 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-14 16:48:08,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 404 events. 49/404 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1325 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 390. Up to 18 conditions per place. [2024-10-14 16:48:08,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 318 transitions, 724 flow [2024-10-14 16:48:08,528 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 294 places, 318 transitions, 724 flow [2024-10-14 16:48:08,529 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:48:08,530 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;@439eda75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:48:08,530 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-10-14 16:48:08,533 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 16:48:08,533 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-14 16:48:08,533 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 16:48:08,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 16:48:08,533 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] [2024-10-14 16:48:08,533 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2024-10-14 16:48:08,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:48:08,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1139724824, now seen corresponding path program 1 times [2024-10-14 16:48:08,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:48:08,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799684866] [2024-10-14 16:48:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:48:08,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:48:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:48:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:48:08,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:48:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799684866] [2024-10-14 16:48:08,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799684866] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:48:08,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:48:08,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 16:48:08,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331537250] [2024-10-14 16:48:08,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:48:08,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:48:08,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:48:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:48:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:48:08,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 318 [2024-10-14 16:48:08,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 318 transitions, 724 flow. Second operand has 2 states, 2 states have (on average 237.0) internal successors, (474), 2 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:48:08,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 16:48:08,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 318 [2024-10-14 16:48:08,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 16:48:40,903 INFO L124 PetriNetUnfolderBase]: 52488/159649 cut-off events. [2024-10-14 16:48:40,903 INFO L125 PetriNetUnfolderBase]: For 167032/167032 co-relation queries the response was YES. [2024-10-14 16:48:44,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240031 conditions, 159649 events. 52488/159649 cut-off events. For 167032/167032 co-relation queries the response was YES. Maximal size of possible extension queue 3947. Compared 2345869 event pairs, 42648 based on Foata normal form. 59049/204485 useless extension candidates. Maximal degree in co-relation 75623. Up to 52489 conditions per place.