./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/goblint-regression/28-race_reach_27-funptr_racing.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/goblint-regression/28-race_reach_27-funptr_racing.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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:08:44,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:08:44,911 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 17:08:44,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:08:44,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:08:44,949 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:08:44,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:08:44,950 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:08:44,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:08:44,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:08:44,951 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:08:44,951 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:08:44,952 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:08:44,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:08:44,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 17:08:44,952 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:08:44,953 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:08:44,953 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:08:44,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:08:44,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 17:08:44,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:08:44,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 17:08:44,957 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 17:08:44,957 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:08:44,957 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:08:44,957 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:08:44,957 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 17:08:44,958 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:08:44,958 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:08:44,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:08:44,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:08:44,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:08:44,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:08:44,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:08:44,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 17:08:44,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:08:44,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:08:44,960 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:08:44,961 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:08:44,961 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:08:44,961 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:08:44,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2024-10-14 17:08:45,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:08:45,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:08:45,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:08:45,221 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:08:45,222 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:08:45,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2024-10-14 17:08:46,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:08:46,931 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:08:46,931 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2024-10-14 17:08:46,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0251ae21/d45a9667765543fbb7fee6c63f1f2658/FLAG0caf0d380 [2024-10-14 17:08:47,268 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0251ae21/d45a9667765543fbb7fee6c63f1f2658 [2024-10-14 17:08:47,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:08:47,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:08:47,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:08:47,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:08:47,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:08:47,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bdfd50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47, skipping insertion in model container [2024-10-14 17:08:47,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:08:47,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:08:47,698 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:08:47,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:08:47,838 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:08:47,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47 WrapperNode [2024-10-14 17:08:47,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:08:47,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:08:47,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:08:47,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:08:47,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,866 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,902 INFO L138 Inliner]: procedures = 274, calls = 53, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 218 [2024-10-14 17:08:47,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:08:47,910 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:08:47,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:08:47,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:08:47,921 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,946 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:08:47,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:08:47,960 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:08:47,960 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:08:47,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (1/1) ... [2024-10-14 17:08:47,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:08:47,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:08:47,994 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 17:08:47,996 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 17:08:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 17:08:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 17:08:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 17:08:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-14 17:08:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-14 17:08:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 17:08:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:08:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 17:08:48,038 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 17:08:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 17:08:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:08:48,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:08:48,041 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 17:08:48,148 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:08:48,150 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:08:48,411 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 17:08:48,412 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:08:48,448 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:08:48,449 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-14 17:08:48,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:08:48 BoogieIcfgContainer [2024-10-14 17:08:48,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:08:48,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:08:48,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:08:48,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:08:48,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:08:47" (1/3) ... [2024-10-14 17:08:48,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ab2e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:08:48, skipping insertion in model container [2024-10-14 17:08:48,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:47" (2/3) ... [2024-10-14 17:08:48,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ab2e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:08:48, skipping insertion in model container [2024-10-14 17:08:48,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:08:48" (3/3) ... [2024-10-14 17:08:48,457 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2024-10-14 17:08:48,471 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:08:48,472 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-10-14 17:08:48,472 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 17:08:48,521 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-14 17:08:48,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 215 transitions, 437 flow [2024-10-14 17:08:48,655 INFO L124 PetriNetUnfolderBase]: 26/284 cut-off events. [2024-10-14 17:08:48,655 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 17:08:48,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 284 events. 26/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 994 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 176. Up to 4 conditions per place. [2024-10-14 17:08:48,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 215 transitions, 437 flow [2024-10-14 17:08:48,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 215 transitions, 437 flow [2024-10-14 17:08:48,680 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:08:48,688 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;@5f008e3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:08:48,688 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-14 17:08:48,700 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:08:48,701 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-14 17:08:48,701 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:08:48,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:48,702 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:08:48,702 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-14 17:08:48,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:48,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1309174075, now seen corresponding path program 1 times [2024-10-14 17:08:48,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:48,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587248116] [2024-10-14 17:08:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:48,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:49,005 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 17:08:49,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:49,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587248116] [2024-10-14 17:08:49,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587248116] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:49,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:49,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:08:49,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318540920] [2024-10-14 17:08:49,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:49,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:49,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:49,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:49,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:49,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 215 [2024-10-14 17:08:49,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 215 transitions, 437 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 17:08:49,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:49,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 215 [2024-10-14 17:08:49,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:49,340 INFO L124 PetriNetUnfolderBase]: 123/1110 cut-off events. [2024-10-14 17:08:49,342 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 17:08:49,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 1110 events. 123/1110 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7366 event pairs, 108 based on Foata normal form. 131/1116 useless extension candidates. Maximal degree in co-relation 1306. Up to 254 conditions per place. [2024-10-14 17:08:49,383 INFO L140 encePairwiseOnDemand]: 194/215 looper letters, 36 selfloop transitions, 2 changer transitions 0/207 dead transitions. [2024-10-14 17:08:49,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 207 transitions, 497 flow [2024-10-14 17:08:49,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:49,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2024-10-14 17:08:49,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8992248062015504 [2024-10-14 17:08:49,414 INFO L175 Difference]: Start difference. First operand has 198 places, 215 transitions, 437 flow. Second operand 3 states and 580 transitions. [2024-10-14 17:08:49,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 207 transitions, 497 flow [2024-10-14 17:08:49,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 207 transitions, 497 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:08:49,424 INFO L231 Difference]: Finished difference. Result has 199 places, 195 transitions, 405 flow [2024-10-14 17:08:49,426 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=199, PETRI_TRANSITIONS=195} [2024-10-14 17:08:49,429 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 1 predicate places. [2024-10-14 17:08:49,429 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 195 transitions, 405 flow [2024-10-14 17:08:49,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 17:08:49,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:49,430 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:08:49,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:08:49,430 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-14 17:08:49,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:49,435 INFO L85 PathProgramCache]: Analyzing trace with hash -956092991, now seen corresponding path program 1 times [2024-10-14 17:08:49,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:49,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515048632] [2024-10-14 17:08:49,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:49,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:49,867 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 17:08:49,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:49,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515048632] [2024-10-14 17:08:49,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515048632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:49,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:49,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:08:49,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580220281] [2024-10-14 17:08:49,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:49,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:08:49,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:49,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:08:49,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:08:49,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 215 [2024-10-14 17:08:49,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 195 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 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 17:08:49,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:49,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 215 [2024-10-14 17:08:49,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:50,202 INFO L124 PetriNetUnfolderBase]: 246/1513 cut-off events. [2024-10-14 17:08:50,202 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-14 17:08:50,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 1513 events. 246/1513 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11580 event pairs, 179 based on Foata normal form. 0/1368 useless extension candidates. Maximal degree in co-relation 1986. Up to 387 conditions per place. [2024-10-14 17:08:50,208 INFO L140 encePairwiseOnDemand]: 209/215 looper letters, 80 selfloop transitions, 5 changer transitions 0/242 dead transitions. [2024-10-14 17:08:50,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 242 transitions, 669 flow [2024-10-14 17:08:50,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:08:50,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:08:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1034 transitions. [2024-10-14 17:08:50,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8015503875968992 [2024-10-14 17:08:50,212 INFO L175 Difference]: Start difference. First operand has 199 places, 195 transitions, 405 flow. Second operand 6 states and 1034 transitions. [2024-10-14 17:08:50,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 242 transitions, 669 flow [2024-10-14 17:08:50,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 242 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:08:50,217 INFO L231 Difference]: Finished difference. Result has 201 places, 194 transitions, 409 flow [2024-10-14 17:08:50,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=409, PETRI_PLACES=201, PETRI_TRANSITIONS=194} [2024-10-14 17:08:50,220 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 3 predicate places. [2024-10-14 17:08:50,220 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 194 transitions, 409 flow [2024-10-14 17:08:50,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 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 17:08:50,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:50,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:08:50,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 17:08:50,221 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-14 17:08:50,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:50,222 INFO L85 PathProgramCache]: Analyzing trace with hash -917997421, now seen corresponding path program 1 times [2024-10-14 17:08:50,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:50,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121225302] [2024-10-14 17:08:50,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:50,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:50,260 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 17:08:50,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:50,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121225302] [2024-10-14 17:08:50,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121225302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:50,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:50,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:08:50,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859056953] [2024-10-14 17:08:50,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:50,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:50,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:50,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:50,271 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 215 [2024-10-14 17:08:50,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 194 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 17:08:50,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:50,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 215 [2024-10-14 17:08:50,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:50,423 INFO L124 PetriNetUnfolderBase]: 170/1602 cut-off events. [2024-10-14 17:08:50,423 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 17:08:50,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 1602 events. 170/1602 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12540 event pairs, 12 based on Foata normal form. 0/1433 useless extension candidates. Maximal degree in co-relation 1920. Up to 189 conditions per place. [2024-10-14 17:08:50,430 INFO L140 encePairwiseOnDemand]: 211/215 looper letters, 41 selfloop transitions, 3 changer transitions 0/214 dead transitions. [2024-10-14 17:08:50,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 214 transitions, 540 flow [2024-10-14 17:08:50,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2024-10-14 17:08:50,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8697674418604651 [2024-10-14 17:08:50,432 INFO L175 Difference]: Start difference. First operand has 201 places, 194 transitions, 409 flow. Second operand 3 states and 561 transitions. [2024-10-14 17:08:50,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 214 transitions, 540 flow [2024-10-14 17:08:50,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 214 transitions, 530 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 17:08:50,437 INFO L231 Difference]: Finished difference. Result has 200 places, 196 transitions, 421 flow [2024-10-14 17:08:50,437 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=421, PETRI_PLACES=200, PETRI_TRANSITIONS=196} [2024-10-14 17:08:50,438 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 2 predicate places. [2024-10-14 17:08:50,438 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 196 transitions, 421 flow [2024-10-14 17:08:50,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 17:08:50,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:50,439 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:50,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 17:08:50,440 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-14 17:08:50,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:50,441 INFO L85 PathProgramCache]: Analyzing trace with hash 361966522, now seen corresponding path program 1 times [2024-10-14 17:08:50,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:50,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864770887] [2024-10-14 17:08:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:50,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:08:50,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864770887] [2024-10-14 17:08:50,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864770887] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:08:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793164025] [2024-10-14 17:08:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:50,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:08:50,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:08:50,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:08:50,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 17:08:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:50,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 17:08:50,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:08:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 17:08:50,585 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:08:50,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793164025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:50,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:08:50,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-14 17:08:50,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045892308] [2024-10-14 17:08:50,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:50,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:50,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:50,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:50,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:08:50,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 215 [2024-10-14 17:08:50,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 196 transitions, 421 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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 17:08:50,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:50,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 215 [2024-10-14 17:08:50,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:50,795 INFO L124 PetriNetUnfolderBase]: 278/2141 cut-off events. [2024-10-14 17:08:50,795 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-14 17:08:50,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 2141 events. 278/2141 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17981 event pairs, 204 based on Foata normal form. 0/1879 useless extension candidates. Maximal degree in co-relation 2739. Up to 497 conditions per place. [2024-10-14 17:08:50,803 INFO L140 encePairwiseOnDemand]: 210/215 looper letters, 39 selfloop transitions, 5 changer transitions 0/211 dead transitions. [2024-10-14 17:08:50,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 211 transitions, 543 flow [2024-10-14 17:08:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:50,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2024-10-14 17:08:50,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8496124031007752 [2024-10-14 17:08:50,806 INFO L175 Difference]: Start difference. First operand has 200 places, 196 transitions, 421 flow. Second operand 3 states and 548 transitions. [2024-10-14 17:08:50,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 211 transitions, 543 flow [2024-10-14 17:08:50,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 211 transitions, 535 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:08:50,809 INFO L231 Difference]: Finished difference. Result has 202 places, 199 transitions, 451 flow [2024-10-14 17:08:50,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=202, PETRI_TRANSITIONS=199} [2024-10-14 17:08:50,810 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 4 predicate places. [2024-10-14 17:08:50,810 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 199 transitions, 451 flow [2024-10-14 17:08:50,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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 17:08:50,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:50,811 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:08:50,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 17:08:51,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:08:51,016 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-14 17:08:51,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:51,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1885480934, now seen corresponding path program 1 times [2024-10-14 17:08:51,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:51,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102553139] [2024-10-14 17:08:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:51,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:08:51,048 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:08:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:08:51,089 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:08:51,089 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:08:51,090 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-14 17:08:51,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-10-14 17:08:51,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-10-14 17:08:51,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-10-14 17:08:51,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-10-14 17:08:51,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-10-14 17:08:51,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-10-14 17:08:51,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-10-14 17:08:51,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-10-14 17:08:51,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-10-14 17:08:51,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-10-14 17:08:51,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-10-14 17:08:51,094 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-10-14 17:08:51,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-10-14 17:08:51,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-10-14 17:08:51,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-10-14 17:08:51,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-10-14 17:08:51,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-10-14 17:08:51,095 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-10-14 17:08:51,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-10-14 17:08:51,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-10-14 17:08:51,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-10-14 17:08:51,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-10-14 17:08:51,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 17:08:51,097 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-14 17:08:51,099 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 17:08:51,099 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 17:08:51,133 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 17:08:51,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 321 transitions, 658 flow [2024-10-14 17:08:51,178 INFO L124 PetriNetUnfolderBase]: 48/487 cut-off events. [2024-10-14 17:08:51,179 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 17:08:51,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 487 events. 48/487 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2078 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 302. Up to 8 conditions per place. [2024-10-14 17:08:51,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 321 transitions, 658 flow [2024-10-14 17:08:51,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 321 transitions, 658 flow [2024-10-14 17:08:51,190 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:08:51,191 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;@5f008e3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:08:51,191 INFO L334 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-10-14 17:08:51,193 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:08:51,194 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-14 17:08:51,194 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:08:51,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:51,194 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:08:51,194 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-14 17:08:51,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:51,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1306899846, now seen corresponding path program 1 times [2024-10-14 17:08:51,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:51,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064570312] [2024-10-14 17:08:51,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:51,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:51,220 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 17:08:51,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:51,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064570312] [2024-10-14 17:08:51,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064570312] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:51,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:51,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:08:51,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781015450] [2024-10-14 17:08:51,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:51,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:51,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:51,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:51,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:51,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 321 [2024-10-14 17:08:51,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 321 transitions, 658 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 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 17:08:51,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:51,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 321 [2024-10-14 17:08:51,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:54,051 INFO L124 PetriNetUnfolderBase]: 3460/16760 cut-off events. [2024-10-14 17:08:54,052 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2024-10-14 17:08:54,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22311 conditions, 16760 events. 3460/16760 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 208716 event pairs, 1584 based on Foata normal form. 3090/18209 useless extension candidates. Maximal degree in co-relation 1883. Up to 5465 conditions per place. [2024-10-14 17:08:54,150 INFO L140 encePairwiseOnDemand]: 288/321 looper letters, 51 selfloop transitions, 2 changer transitions 0/302 dead transitions. [2024-10-14 17:08:54,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 302 transitions, 726 flow [2024-10-14 17:08:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2024-10-14 17:08:54,152 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8795430944963655 [2024-10-14 17:08:54,152 INFO L175 Difference]: Start difference. First operand has 292 places, 321 transitions, 658 flow. Second operand 3 states and 847 transitions. [2024-10-14 17:08:54,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 302 transitions, 726 flow [2024-10-14 17:08:54,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 302 transitions, 726 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:08:54,158 INFO L231 Difference]: Finished difference. Result has 293 places, 290 transitions, 606 flow [2024-10-14 17:08:54,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=293, PETRI_TRANSITIONS=290} [2024-10-14 17:08:54,160 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, 1 predicate places. [2024-10-14 17:08:54,161 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 290 transitions, 606 flow [2024-10-14 17:08:54,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 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 17:08:54,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:54,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:08:54,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 17:08:54,162 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-14 17:08:54,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash 535087202, now seen corresponding path program 1 times [2024-10-14 17:08:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:54,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60899072] [2024-10-14 17:08:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:54,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:54,446 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 17:08:54,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:54,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60899072] [2024-10-14 17:08:54,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60899072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:54,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:54,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:08:54,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545816509] [2024-10-14 17:08:54,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:54,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:08:54,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:54,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:08:54,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:08:54,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 321 [2024-10-14 17:08:54,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 290 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 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 17:08:54,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:54,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 321 [2024-10-14 17:08:54,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:57,555 INFO L124 PetriNetUnfolderBase]: 6961/28017 cut-off events. [2024-10-14 17:08:57,555 INFO L125 PetriNetUnfolderBase]: For 380/419 co-relation queries the response was YES. [2024-10-14 17:08:57,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39003 conditions, 28017 events. 6961/28017 cut-off events. For 380/419 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 366870 event pairs, 3202 based on Foata normal form. 0/25145 useless extension candidates. Maximal degree in co-relation 35839. Up to 7816 conditions per place. [2024-10-14 17:08:57,733 INFO L140 encePairwiseOnDemand]: 315/321 looper letters, 142 selfloop transitions, 6 changer transitions 0/385 dead transitions. [2024-10-14 17:08:57,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 385 transitions, 1092 flow [2024-10-14 17:08:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:08:57,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:08:57,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1576 transitions. [2024-10-14 17:08:57,736 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.818276220145379 [2024-10-14 17:08:57,736 INFO L175 Difference]: Start difference. First operand has 293 places, 290 transitions, 606 flow. Second operand 6 states and 1576 transitions. [2024-10-14 17:08:57,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 385 transitions, 1092 flow [2024-10-14 17:08:57,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 385 transitions, 1090 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:08:57,741 INFO L231 Difference]: Finished difference. Result has 296 places, 289 transitions, 614 flow [2024-10-14 17:08:57,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=614, PETRI_PLACES=296, PETRI_TRANSITIONS=289} [2024-10-14 17:08:57,742 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, 4 predicate places. [2024-10-14 17:08:57,742 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 289 transitions, 614 flow [2024-10-14 17:08:57,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 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 17:08:57,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:57,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:08:57,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 17:08:57,744 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-14 17:08:57,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:57,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1289677285, now seen corresponding path program 1 times [2024-10-14 17:08:57,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:57,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807859761] [2024-10-14 17:08:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:57,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:57,775 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 17:08:57,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:57,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807859761] [2024-10-14 17:08:57,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807859761] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:57,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:57,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:08:57,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593428164] [2024-10-14 17:08:57,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:57,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:57,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:57,791 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 321 [2024-10-14 17:08:57,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 289 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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 17:08:57,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:57,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 321 [2024-10-14 17:08:57,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:00,829 INFO L124 PetriNetUnfolderBase]: 6242/30828 cut-off events. [2024-10-14 17:09:00,829 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-10-14 17:09:00,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40778 conditions, 30828 events. 6242/30828 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 425040 event pairs, 1648 based on Foata normal form. 0/27517 useless extension candidates. Maximal degree in co-relation 38700. Up to 5556 conditions per place. [2024-10-14 17:09:01,077 INFO L140 encePairwiseOnDemand]: 314/321 looper letters, 74 selfloop transitions, 5 changer transitions 0/327 dead transitions. [2024-10-14 17:09:01,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 327 transitions, 859 flow [2024-10-14 17:09:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:01,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 828 transitions. [2024-10-14 17:09:01,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8598130841121495 [2024-10-14 17:09:01,084 INFO L175 Difference]: Start difference. First operand has 296 places, 289 transitions, 614 flow. Second operand 3 states and 828 transitions. [2024-10-14 17:09:01,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 327 transitions, 859 flow [2024-10-14 17:09:01,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 327 transitions, 847 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 17:09:01,091 INFO L231 Difference]: Finished difference. Result has 295 places, 294 transitions, 646 flow [2024-10-14 17:09:01,094 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=295, PETRI_TRANSITIONS=294} [2024-10-14 17:09:01,095 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, 3 predicate places. [2024-10-14 17:09:01,095 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 294 transitions, 646 flow [2024-10-14 17:09:01,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 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 17:09:01,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:01,097 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:01,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 17:09:01,097 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-14 17:09:01,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1978270771, now seen corresponding path program 1 times [2024-10-14 17:09:01,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:01,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4485991] [2024-10-14 17:09:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:01,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:01,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:01,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4485991] [2024-10-14 17:09:01,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4485991] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:09:01,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036594956] [2024-10-14 17:09:01,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:01,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:09:01,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:09:01,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:09:01,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 17:09:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:01,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 17:09:01,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:09:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 17:09:01,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 17:09:01,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036594956] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:01,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 17:09:01,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-14 17:09:01,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078209129] [2024-10-14 17:09:01,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:01,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:01,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:01,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:01,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:09:01,307 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 321 [2024-10-14 17:09:01,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 294 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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 17:09:01,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:01,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 321 [2024-10-14 17:09:01,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:05,163 INFO L124 PetriNetUnfolderBase]: 9743/42065 cut-off events. [2024-10-14 17:09:05,164 INFO L125 PetriNetUnfolderBase]: For 2190/2219 co-relation queries the response was YES. [2024-10-14 17:09:05,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59277 conditions, 42065 events. 9743/42065 cut-off events. For 2190/2219 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 594634 event pairs, 7040 based on Foata normal form. 24/37329 useless extension candidates. Maximal degree in co-relation 56381. Up to 12782 conditions per place. [2024-10-14 17:09:05,555 INFO L140 encePairwiseOnDemand]: 315/321 looper letters, 68 selfloop transitions, 8 changer transitions 0/324 dead transitions. [2024-10-14 17:09:05,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 324 transitions, 870 flow [2024-10-14 17:09:05,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:05,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 813 transitions. [2024-10-14 17:09:05,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8442367601246106 [2024-10-14 17:09:05,561 INFO L175 Difference]: Start difference. First operand has 295 places, 294 transitions, 646 flow. Second operand 3 states and 813 transitions. [2024-10-14 17:09:05,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 324 transitions, 870 flow [2024-10-14 17:09:05,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 324 transitions, 856 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:09:05,574 INFO L231 Difference]: Finished difference. Result has 297 places, 300 transitions, 702 flow [2024-10-14 17:09:05,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=297, PETRI_TRANSITIONS=300} [2024-10-14 17:09:05,576 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, 5 predicate places. [2024-10-14 17:09:05,577 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 300 transitions, 702 flow [2024-10-14 17:09:05,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 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 17:09:05,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:05,578 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:05,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 17:09:05,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-14 17:09:05,782 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-14 17:09:05,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:05,783 INFO L85 PathProgramCache]: Analyzing trace with hash -221513832, now seen corresponding path program 1 times [2024-10-14 17:09:05,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:05,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955932165] [2024-10-14 17:09:05,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:05,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:05,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955932165] [2024-10-14 17:09:05,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955932165] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:09:05,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526966429] [2024-10-14 17:09:05,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:05,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:09:05,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:09:05,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:09:05,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 17:09:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:05,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 17:09:05,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:09:05,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:05,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:09:06,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:06,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526966429] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:09:06,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:09:06,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 17:09:06,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337242618] [2024-10-14 17:09:06,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:09:06,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:09:06,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:06,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:09:06,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:09:06,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 321 [2024-10-14 17:09:06,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 300 transitions, 702 flow. Second operand has 10 states, 10 states have (on average 249.3) internal successors, (2493), 10 states have internal predecessors, (2493), 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 17:09:06,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:06,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 321 [2024-10-14 17:09:06,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:06,845 INFO L124 PetriNetUnfolderBase]: 1655/7366 cut-off events. [2024-10-14 17:09:06,845 INFO L125 PetriNetUnfolderBase]: For 271/274 co-relation queries the response was YES. [2024-10-14 17:09:06,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10370 conditions, 7366 events. 1655/7366 cut-off events. For 271/274 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 77786 event pairs, 2 based on Foata normal form. 215/7099 useless extension candidates. Maximal degree in co-relation 10362. Up to 1116 conditions per place. [2024-10-14 17:09:06,877 INFO L140 encePairwiseOnDemand]: 316/321 looper letters, 138 selfloop transitions, 7 changer transitions 0/346 dead transitions. [2024-10-14 17:09:06,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 346 transitions, 1018 flow [2024-10-14 17:09:06,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 17:09:06,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 17:09:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2370 transitions. [2024-10-14 17:09:06,882 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8203530633437176 [2024-10-14 17:09:06,882 INFO L175 Difference]: Start difference. First operand has 297 places, 300 transitions, 702 flow. Second operand 9 states and 2370 transitions. [2024-10-14 17:09:06,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 346 transitions, 1018 flow [2024-10-14 17:09:06,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 346 transitions, 1010 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-14 17:09:06,888 INFO L231 Difference]: Finished difference. Result has 247 places, 236 transitions, 514 flow [2024-10-14 17:09:06,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=514, PETRI_PLACES=247, PETRI_TRANSITIONS=236} [2024-10-14 17:09:06,888 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, -45 predicate places. [2024-10-14 17:09:06,889 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 236 transitions, 514 flow [2024-10-14 17:09:06,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 249.3) internal successors, (2493), 10 states have internal predecessors, (2493), 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 17:09:06,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:06,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:06,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 17:09:07,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:09:07,095 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-14 17:09:07,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:07,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2137229029, now seen corresponding path program 1 times [2024-10-14 17:09:07,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:07,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878786594] [2024-10-14 17:09:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:07,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:07,124 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 17:09:07,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:07,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878786594] [2024-10-14 17:09:07,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878786594] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:07,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:07,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:07,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337213021] [2024-10-14 17:09:07,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:07,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:07,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:07,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:07,175 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 321 [2024-10-14 17:09:07,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 236 transitions, 514 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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 17:09:07,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:07,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 321 [2024-10-14 17:09:07,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:07,599 INFO L124 PetriNetUnfolderBase]: 872/4015 cut-off events. [2024-10-14 17:09:07,600 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-14 17:09:07,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5949 conditions, 4015 events. 872/4015 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 37244 event pairs, 377 based on Foata normal form. 0/3646 useless extension candidates. Maximal degree in co-relation 5941. Up to 1033 conditions per place. [2024-10-14 17:09:07,630 INFO L140 encePairwiseOnDemand]: 289/321 looper letters, 83 selfloop transitions, 24 changer transitions 0/285 dead transitions. [2024-10-14 17:09:07,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 285 transitions, 831 flow [2024-10-14 17:09:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:07,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 778 transitions. [2024-10-14 17:09:07,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8078920041536864 [2024-10-14 17:09:07,633 INFO L175 Difference]: Start difference. First operand has 247 places, 236 transitions, 514 flow. Second operand 3 states and 778 transitions. [2024-10-14 17:09:07,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 285 transitions, 831 flow [2024-10-14 17:09:07,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 285 transitions, 816 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-14 17:09:07,639 INFO L231 Difference]: Finished difference. Result has 246 places, 260 transitions, 707 flow [2024-10-14 17:09:07,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=707, PETRI_PLACES=246, PETRI_TRANSITIONS=260} [2024-10-14 17:09:07,640 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, -46 predicate places. [2024-10-14 17:09:07,640 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 260 transitions, 707 flow [2024-10-14 17:09:07,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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 17:09:07,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:07,641 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:07,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 17:09:07,641 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-14 17:09:07,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:07,642 INFO L85 PathProgramCache]: Analyzing trace with hash 243584091, now seen corresponding path program 1 times [2024-10-14 17:09:07,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:07,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754222978] [2024-10-14 17:09:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:07,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:07,671 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 17:09:07,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:07,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754222978] [2024-10-14 17:09:07,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754222978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:07,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:07,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:07,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801820544] [2024-10-14 17:09:07,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:07,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:07,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:07,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:07,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:07,726 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 321 [2024-10-14 17:09:07,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 260 transitions, 707 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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 17:09:07,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:07,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 321 [2024-10-14 17:09:07,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:08,097 INFO L124 PetriNetUnfolderBase]: 848/4128 cut-off events. [2024-10-14 17:09:08,098 INFO L125 PetriNetUnfolderBase]: For 1616/1680 co-relation queries the response was YES. [2024-10-14 17:09:08,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7357 conditions, 4128 events. 848/4128 cut-off events. For 1616/1680 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 39168 event pairs, 502 based on Foata normal form. 12/3852 useless extension candidates. Maximal degree in co-relation 7349. Up to 1516 conditions per place. [2024-10-14 17:09:08,118 INFO L140 encePairwiseOnDemand]: 309/321 looper letters, 75 selfloop transitions, 16 changer transitions 0/287 dead transitions. [2024-10-14 17:09:08,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 287 transitions, 988 flow [2024-10-14 17:09:08,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2024-10-14 17:09:08,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8006230529595015 [2024-10-14 17:09:08,120 INFO L175 Difference]: Start difference. First operand has 246 places, 260 transitions, 707 flow. Second operand 3 states and 771 transitions. [2024-10-14 17:09:08,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 287 transitions, 988 flow [2024-10-14 17:09:08,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 287 transitions, 924 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:09:08,126 INFO L231 Difference]: Finished difference. Result has 248 places, 274 transitions, 805 flow [2024-10-14 17:09:08,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=805, PETRI_PLACES=248, PETRI_TRANSITIONS=274} [2024-10-14 17:09:08,128 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, -44 predicate places. [2024-10-14 17:09:08,128 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 274 transitions, 805 flow [2024-10-14 17:09:08,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 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 17:09:08,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:08,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:08,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 17:09:08,129 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-14 17:09:08,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1076401122, now seen corresponding path program 1 times [2024-10-14 17:09:08,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:08,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002432419] [2024-10-14 17:09:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:08,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:08,166 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 17:09:08,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:08,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002432419] [2024-10-14 17:09:08,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002432419] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:08,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:08,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:08,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774333041] [2024-10-14 17:09:08,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:08,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:08,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:08,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:08,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:08,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 321 [2024-10-14 17:09:08,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 274 transitions, 805 flow. Second operand has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 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 17:09:08,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:08,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 321 [2024-10-14 17:09:08,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:08,624 INFO L124 PetriNetUnfolderBase]: 887/4297 cut-off events. [2024-10-14 17:09:08,625 INFO L125 PetriNetUnfolderBase]: For 1777/1857 co-relation queries the response was YES. [2024-10-14 17:09:08,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7723 conditions, 4297 events. 887/4297 cut-off events. For 1777/1857 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 41102 event pairs, 485 based on Foata normal form. 16/4001 useless extension candidates. Maximal degree in co-relation 7714. Up to 1571 conditions per place. [2024-10-14 17:09:08,671 INFO L140 encePairwiseOnDemand]: 309/321 looper letters, 87 selfloop transitions, 16 changer transitions 0/301 dead transitions. [2024-10-14 17:09:08,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 301 transitions, 1118 flow [2024-10-14 17:09:08,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:08,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2024-10-14 17:09:08,678 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8006230529595015 [2024-10-14 17:09:08,679 INFO L175 Difference]: Start difference. First operand has 248 places, 274 transitions, 805 flow. Second operand 3 states and 771 transitions. [2024-10-14 17:09:08,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 301 transitions, 1118 flow [2024-10-14 17:09:08,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 301 transitions, 1086 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:09:08,782 INFO L231 Difference]: Finished difference. Result has 250 places, 288 transitions, 943 flow [2024-10-14 17:09:08,782 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=943, PETRI_PLACES=250, PETRI_TRANSITIONS=288} [2024-10-14 17:09:08,787 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, -42 predicate places. [2024-10-14 17:09:08,788 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 288 transitions, 943 flow [2024-10-14 17:09:08,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 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 17:09:08,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:08,790 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:09:08,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 17:09:08,790 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-14 17:09:08,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1379497538, now seen corresponding path program 1 times [2024-10-14 17:09:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:08,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419569748] [2024-10-14 17:09:08,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:08,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:09:08,818 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:09:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:09:08,832 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:09:08,832 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:09:08,832 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2024-10-14 17:09:08,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2024-10-14 17:09:08,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2024-10-14 17:09:08,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (28 of 32 remaining) [2024-10-14 17:09:08,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2024-10-14 17:09:08,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2024-10-14 17:09:08,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2024-10-14 17:09:08,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (24 of 32 remaining) [2024-10-14 17:09:08,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2024-10-14 17:09:08,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2024-10-14 17:09:08,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2024-10-14 17:09:08,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (20 of 32 remaining) [2024-10-14 17:09:08,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2024-10-14 17:09:08,833 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2024-10-14 17:09:08,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2024-10-14 17:09:08,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2024-10-14 17:09:08,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2024-10-14 17:09:08,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 32 remaining) [2024-10-14 17:09:08,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 32 remaining) [2024-10-14 17:09:08,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2024-10-14 17:09:08,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2024-10-14 17:09:08,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2024-10-14 17:09:08,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 32 remaining) [2024-10-14 17:09:08,834 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2024-10-14 17:09:08,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2024-10-14 17:09:08,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2024-10-14 17:09:08,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2024-10-14 17:09:08,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2024-10-14 17:09:08,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2024-10-14 17:09:08,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2024-10-14 17:09:08,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2024-10-14 17:09:08,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2024-10-14 17:09:08,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 17:09:08,835 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:09:08,836 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 17:09:08,836 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 17:09:08,879 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 17:09:08,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 427 transitions, 881 flow [2024-10-14 17:09:08,970 INFO L124 PetriNetUnfolderBase]: 75/735 cut-off events. [2024-10-14 17:09:08,970 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-14 17:09:08,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 735 events. 75/735 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3412 event pairs, 1 based on Foata normal form. 0/609 useless extension candidates. Maximal degree in co-relation 495. Up to 16 conditions per place. [2024-10-14 17:09:08,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 427 transitions, 881 flow [2024-10-14 17:09:08,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 386 places, 427 transitions, 881 flow [2024-10-14 17:09:08,994 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:09:08,994 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;@5f008e3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:09:08,995 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-10-14 17:09:08,997 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:09:08,997 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-14 17:09:08,997 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:09:08,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:08,997 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:09:08,998 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2024-10-14 17:09:08,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash 639060913, now seen corresponding path program 1 times [2024-10-14 17:09:08,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:08,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930243094] [2024-10-14 17:09:08,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:08,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:09,029 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 17:09:09,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:09,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930243094] [2024-10-14 17:09:09,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930243094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:09,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:09,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:09:09,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963784314] [2024-10-14 17:09:09,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:09,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:09,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:09,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:09,046 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 427 [2024-10-14 17:09:09,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 427 transitions, 881 flow. Second operand has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 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 17:09:09,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:09,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 427 [2024-10-14 17:09:09,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand