./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_24-sound_lock_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_24-sound_lock_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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:08:43,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:08:43,539 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 17:08:43,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:08:43,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:08:43,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:08:43,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:08:43,568 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:08:43,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:08:43,569 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:08:43,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:08:43,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:08:43,570 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:08:43,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:08:43,572 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 17:08:43,572 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:08:43,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:08:43,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:08:43,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:08:43,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 17:08:43,576 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:08:43,576 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 17:08:43,577 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 17:08:43,577 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:08:43,577 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:08:43,577 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:08:43,577 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 17:08:43,578 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:08:43,578 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:08:43,578 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:08:43,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:08:43,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:08:43,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:08:43,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:08:43,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 17:08:43,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:08:43,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:08:43,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:08:43,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:08:43,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:08:43,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:08:43,580 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2024-10-14 17:08:43,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:08:43,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:08:43,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:08:43,869 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:08:43,870 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:08:43,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-10-14 17:08:45,254 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:08:45,516 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:08:45,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2024-10-14 17:08:45,536 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dba21cb01/f39967130b364137893b5b451b3f344e/FLAG6bc2b6fc3 [2024-10-14 17:08:45,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dba21cb01/f39967130b364137893b5b451b3f344e [2024-10-14 17:08:45,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:08:45,559 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:08:45,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:08:45,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:08:45,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:08:45,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:45,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@657e609d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45, skipping insertion in model container [2024-10-14 17:08:45,567 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:45,603 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:08:45,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:08:45,881 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:08:45,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:08:45,972 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:08:45,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45 WrapperNode [2024-10-14 17:08:45,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:08:45,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:08:45,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:08:45,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:08:45,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:46,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:46,029 INFO L138 Inliner]: procedures = 171, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 105 [2024-10-14 17:08:46,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:08:46,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:08:46,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:08:46,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:08:46,042 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:46,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:46,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:46,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:46,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:46,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:46,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:46,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:46,065 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:08:46,066 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:08:46,066 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:08:46,066 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:08:46,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (1/1) ... [2024-10-14 17:08:46,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:08:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:08:46,095 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 17:08:46,096 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 17:08:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-14 17:08:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-14 17:08:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 17:08:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:08:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 17:08:46,136 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 17:08:46,137 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 17:08:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 17:08:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 17:08:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 17:08:46,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:08:46,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:08:46,138 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 17:08:46,250 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:08:46,252 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:08:46,619 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 17:08:46,620 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:08:46,660 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:08:46,662 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-14 17:08:46,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:08:46 BoogieIcfgContainer [2024-10-14 17:08:46,663 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:08:46,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:08:46,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:08:46,671 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:08:46,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:08:45" (1/3) ... [2024-10-14 17:08:46,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e14ce3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:08:46, skipping insertion in model container [2024-10-14 17:08:46,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:45" (2/3) ... [2024-10-14 17:08:46,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e14ce3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:08:46, skipping insertion in model container [2024-10-14 17:08:46,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:08:46" (3/3) ... [2024-10-14 17:08:46,675 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2024-10-14 17:08:46,694 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:08:46,694 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-14 17:08:46,694 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 17:08:46,777 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-14 17:08:46,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 155 transitions, 317 flow [2024-10-14 17:08:46,970 INFO L124 PetriNetUnfolderBase]: 20/214 cut-off events. [2024-10-14 17:08:46,974 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 17:08:46,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 214 events. 20/214 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 621 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2024-10-14 17:08:46,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 155 transitions, 317 flow [2024-10-14 17:08:47,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 155 transitions, 317 flow [2024-10-14 17:08:47,023 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:08:47,037 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;@5a3311f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:08:47,038 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-14 17:08:47,062 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:08:47,064 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-14 17:08:47,064 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:08:47,064 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:47,069 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] [2024-10-14 17:08:47,071 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 17:08:47,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:47,076 INFO L85 PathProgramCache]: Analyzing trace with hash -778459379, now seen corresponding path program 1 times [2024-10-14 17:08:47,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:47,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180552296] [2024-10-14 17:08:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:47,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:47,617 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 17:08:47,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:47,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180552296] [2024-10-14 17:08:47,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180552296] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:47,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:47,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:08:47,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837986537] [2024-10-14 17:08:47,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:47,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:47,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:47,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:47,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:47,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 155 [2024-10-14 17:08:47,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 155 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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 17:08:47,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:47,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 155 [2024-10-14 17:08:47,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:47,836 INFO L124 PetriNetUnfolderBase]: 49/571 cut-off events. [2024-10-14 17:08:47,836 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 17:08:47,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 571 events. 49/571 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2733 event pairs, 35 based on Foata normal form. 63/577 useless extension candidates. Maximal degree in co-relation 607. Up to 108 conditions per place. [2024-10-14 17:08:47,844 INFO L140 encePairwiseOnDemand]: 140/155 looper letters, 22 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2024-10-14 17:08:47,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 147 transitions, 349 flow [2024-10-14 17:08:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:47,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2024-10-14 17:08:47,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8946236559139785 [2024-10-14 17:08:47,858 INFO L175 Difference]: Start difference. First operand has 144 places, 155 transitions, 317 flow. Second operand 3 states and 416 transitions. [2024-10-14 17:08:47,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 147 transitions, 349 flow [2024-10-14 17:08:47,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 147 transitions, 349 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:08:47,867 INFO L231 Difference]: Finished difference. Result has 145 places, 141 transitions, 297 flow [2024-10-14 17:08:47,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=145, PETRI_TRANSITIONS=141} [2024-10-14 17:08:47,880 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, 1 predicate places. [2024-10-14 17:08:47,880 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 141 transitions, 297 flow [2024-10-14 17:08:47,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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 17:08:47,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:47,882 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] [2024-10-14 17:08:47,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:08:47,882 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 17:08:47,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:47,886 INFO L85 PathProgramCache]: Analyzing trace with hash 235746507, now seen corresponding path program 1 times [2024-10-14 17:08:47,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:47,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275995880] [2024-10-14 17:08:47,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:47,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:48,404 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 17:08:48,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:48,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275995880] [2024-10-14 17:08:48,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275995880] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:48,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:48,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:08:48,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637027838] [2024-10-14 17:08:48,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:48,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:08:48,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:48,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:08:48,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:08:48,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 155 [2024-10-14 17:08:48,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 141 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 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 17:08:48,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:48,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 155 [2024-10-14 17:08:48,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:48,703 INFO L124 PetriNetUnfolderBase]: 109/671 cut-off events. [2024-10-14 17:08:48,703 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-14 17:08:48,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 671 events. 109/671 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3789 event pairs, 7 based on Foata normal form. 0/618 useless extension candidates. Maximal degree in co-relation 859. Up to 181 conditions per place. [2024-10-14 17:08:48,708 INFO L140 encePairwiseOnDemand]: 149/155 looper letters, 48 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2024-10-14 17:08:48,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 164 transitions, 449 flow [2024-10-14 17:08:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:08:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:08:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 726 transitions. [2024-10-14 17:08:48,713 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7806451612903226 [2024-10-14 17:08:48,713 INFO L175 Difference]: Start difference. First operand has 145 places, 141 transitions, 297 flow. Second operand 6 states and 726 transitions. [2024-10-14 17:08:48,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 164 transitions, 449 flow [2024-10-14 17:08:48,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 164 transitions, 445 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:08:48,717 INFO L231 Difference]: Finished difference. Result has 147 places, 140 transitions, 301 flow [2024-10-14 17:08:48,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=147, PETRI_TRANSITIONS=140} [2024-10-14 17:08:48,718 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, 3 predicate places. [2024-10-14 17:08:48,718 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 140 transitions, 301 flow [2024-10-14 17:08:48,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.5) internal successors, (681), 6 states have internal predecessors, (681), 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 17:08:48,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:48,719 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] [2024-10-14 17:08:48,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 17:08:48,720 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 17:08:48,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:48,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1801427432, now seen corresponding path program 1 times [2024-10-14 17:08:48,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:48,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39027918] [2024-10-14 17:08:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:48,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:48,802 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 17:08:48,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:48,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39027918] [2024-10-14 17:08:48,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39027918] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:48,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:48,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:08:48,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909412650] [2024-10-14 17:08:48,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:48,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:48,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:48,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:48,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:48,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 155 [2024-10-14 17:08:48,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 140 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 17:08:48,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:48,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 155 [2024-10-14 17:08:48,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:48,946 INFO L124 PetriNetUnfolderBase]: 92/803 cut-off events. [2024-10-14 17:08:48,947 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 17:08:48,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 803 events. 92/803 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4684 event pairs, 30 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 962. Up to 125 conditions per place. [2024-10-14 17:08:48,951 INFO L140 encePairwiseOnDemand]: 146/155 looper letters, 30 selfloop transitions, 6 changer transitions 0/153 dead transitions. [2024-10-14 17:08:48,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 153 transitions, 402 flow [2024-10-14 17:08:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2024-10-14 17:08:48,953 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8516129032258064 [2024-10-14 17:08:48,953 INFO L175 Difference]: Start difference. First operand has 147 places, 140 transitions, 301 flow. Second operand 3 states and 396 transitions. [2024-10-14 17:08:48,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 153 transitions, 402 flow [2024-10-14 17:08:48,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 153 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 17:08:48,958 INFO L231 Difference]: Finished difference. Result has 144 places, 142 transitions, 329 flow [2024-10-14 17:08:48,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=329, PETRI_PLACES=144, PETRI_TRANSITIONS=142} [2024-10-14 17:08:48,959 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, 0 predicate places. [2024-10-14 17:08:48,959 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 142 transitions, 329 flow [2024-10-14 17:08:48,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 17:08:48,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:48,960 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] [2024-10-14 17:08:48,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 17:08:48,960 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 17:08:48,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1816965716, now seen corresponding path program 1 times [2024-10-14 17:08:48,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:48,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805819610] [2024-10-14 17:08:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:49,004 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 [1805819610] [2024-10-14 17:08:49,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805819610] 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 [2] imperfect sequences [] total 2 [2024-10-14 17:08:49,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938770612] [2024-10-14 17:08:49,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:49,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:49,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:49,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:49,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:49,033 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 155 [2024-10-14 17:08:49,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 142 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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 17:08:49,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:49,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 155 [2024-10-14 17:08:49,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:49,126 INFO L124 PetriNetUnfolderBase]: 95/805 cut-off events. [2024-10-14 17:08:49,127 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-14 17:08:49,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1139 conditions, 805 events. 95/805 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4778 event pairs, 60 based on Foata normal form. 0/736 useless extension candidates. Maximal degree in co-relation 1062. Up to 189 conditions per place. [2024-10-14 17:08:49,129 INFO L140 encePairwiseOnDemand]: 150/155 looper letters, 27 selfloop transitions, 4 changer transitions 0/149 dead transitions. [2024-10-14 17:08:49,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 149 transitions, 409 flow [2024-10-14 17:08:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2024-10-14 17:08:49,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.843010752688172 [2024-10-14 17:08:49,131 INFO L175 Difference]: Start difference. First operand has 144 places, 142 transitions, 329 flow. Second operand 3 states and 392 transitions. [2024-10-14 17:08:49,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 149 transitions, 409 flow [2024-10-14 17:08:49,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 149 transitions, 395 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:08:49,135 INFO L231 Difference]: Finished difference. Result has 146 places, 145 transitions, 349 flow [2024-10-14 17:08:49,136 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=146, PETRI_TRANSITIONS=145} [2024-10-14 17:08:49,137 INFO L277 CegarLoopForPetriNet]: 144 programPoint places, 2 predicate places. [2024-10-14 17:08:49,137 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 145 transitions, 349 flow [2024-10-14 17:08:49,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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 17:08:49,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:49,138 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, 1, 1, 1, 1, 1] [2024-10-14 17:08:49,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 17:08:49,139 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 17:08:49,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:49,139 INFO L85 PathProgramCache]: Analyzing trace with hash 517944477, now seen corresponding path program 1 times [2024-10-14 17:08:49,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:49,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697342373] [2024-10-14 17:08:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:49,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:08:49,164 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:08:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:08:49,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:08:49,202 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:08:49,202 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-10-14 17:08:49,204 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-10-14 17:08:49,204 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-10-14 17:08:49,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-10-14 17:08:49,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-10-14 17:08:49,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-10-14 17:08:49,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-10-14 17:08:49,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-10-14 17:08:49,205 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-10-14 17:08:49,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-10-14 17:08:49,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-10-14 17:08:49,206 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-10-14 17:08:49,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 17:08:49,206 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-14 17:08:49,208 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 17:08:49,208 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 17:08:49,232 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 17:08:49,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 204 transitions, 424 flow [2024-10-14 17:08:49,286 INFO L124 PetriNetUnfolderBase]: 35/350 cut-off events. [2024-10-14 17:08:49,286 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 17:08:49,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 350 events. 35/350 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1173 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2024-10-14 17:08:49,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 204 transitions, 424 flow [2024-10-14 17:08:49,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 204 transitions, 424 flow [2024-10-14 17:08:49,292 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:08:49,293 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;@5a3311f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:08:49,295 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-10-14 17:08:49,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:08:49,298 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-14 17:08:49,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:08:49,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:49,298 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] [2024-10-14 17:08:49,299 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:08:49,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:49,299 INFO L85 PathProgramCache]: Analyzing trace with hash 598020493, now seen corresponding path program 1 times [2024-10-14 17:08:49,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:49,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277571912] [2024-10-14 17:08:49,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:49,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:49,334 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 17:08:49,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:49,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277571912] [2024-10-14 17:08:49,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277571912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:49,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:49,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:08:49,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729542447] [2024-10-14 17:08:49,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:49,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:49,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:49,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:49,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:49,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 204 [2024-10-14 17:08:49,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 204 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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 17:08:49,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:49,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 204 [2024-10-14 17:08:49,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:49,740 INFO L124 PetriNetUnfolderBase]: 789/4313 cut-off events. [2024-10-14 17:08:49,741 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-14 17:08:49,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5666 conditions, 4313 events. 789/4313 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 41133 event pairs, 348 based on Foata normal form. 749/4675 useless extension candidates. Maximal degree in co-relation 721. Up to 1303 conditions per place. [2024-10-14 17:08:49,759 INFO L140 encePairwiseOnDemand]: 183/204 looper letters, 31 selfloop transitions, 2 changer transitions 0/191 dead transitions. [2024-10-14 17:08:49,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 191 transitions, 464 flow [2024-10-14 17:08:49,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2024-10-14 17:08:49,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8758169934640523 [2024-10-14 17:08:49,761 INFO L175 Difference]: Start difference. First operand has 188 places, 204 transitions, 424 flow. Second operand 3 states and 536 transitions. [2024-10-14 17:08:49,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 191 transitions, 464 flow [2024-10-14 17:08:49,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 191 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:08:49,764 INFO L231 Difference]: Finished difference. Result has 189 places, 185 transitions, 396 flow [2024-10-14 17:08:49,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=189, PETRI_TRANSITIONS=185} [2024-10-14 17:08:49,764 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, 1 predicate places. [2024-10-14 17:08:49,765 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 185 transitions, 396 flow [2024-10-14 17:08:49,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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 17:08:49,765 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:49,765 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] [2024-10-14 17:08:49,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 17:08:49,765 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:08:49,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash 182982859, now seen corresponding path program 1 times [2024-10-14 17:08:49,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:49,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808995502] [2024-10-14 17:08:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:49,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:49,961 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 17:08:49,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:49,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808995502] [2024-10-14 17:08:49,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808995502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:49,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:49,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:08:49,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527525419] [2024-10-14 17:08:49,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:49,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:08:49,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:49,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:08:49,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:08:50,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 204 [2024-10-14 17:08:50,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 185 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 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 17:08:50,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:50,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 204 [2024-10-14 17:08:50,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:50,671 INFO L124 PetriNetUnfolderBase]: 1719/5688 cut-off events. [2024-10-14 17:08:50,671 INFO L125 PetriNetUnfolderBase]: For 119/119 co-relation queries the response was YES. [2024-10-14 17:08:50,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8700 conditions, 5688 events. 1719/5688 cut-off events. For 119/119 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 54074 event pairs, 222 based on Foata normal form. 0/5295 useless extension candidates. Maximal degree in co-relation 1233. Up to 2015 conditions per place. [2024-10-14 17:08:50,692 INFO L140 encePairwiseOnDemand]: 198/204 looper letters, 80 selfloop transitions, 6 changer transitions 0/232 dead transitions. [2024-10-14 17:08:50,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 232 transitions, 662 flow [2024-10-14 17:08:50,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:08:50,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:08:50,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 968 transitions. [2024-10-14 17:08:50,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7908496732026143 [2024-10-14 17:08:50,695 INFO L175 Difference]: Start difference. First operand has 189 places, 185 transitions, 396 flow. Second operand 6 states and 968 transitions. [2024-10-14 17:08:50,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 232 transitions, 662 flow [2024-10-14 17:08:50,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 232 transitions, 660 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:08:50,698 INFO L231 Difference]: Finished difference. Result has 192 places, 184 transitions, 404 flow [2024-10-14 17:08:50,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=404, PETRI_PLACES=192, PETRI_TRANSITIONS=184} [2024-10-14 17:08:50,699 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, 4 predicate places. [2024-10-14 17:08:50,699 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 184 transitions, 404 flow [2024-10-14 17:08:50,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 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 17:08:50,700 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:50,700 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] [2024-10-14 17:08:50,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 17:08:50,700 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:08:50,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:50,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1648112099, now seen corresponding path program 1 times [2024-10-14 17:08:50,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:50,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688508295] [2024-10-14 17:08:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:50,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:50,734 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 17:08:50,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:50,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688508295] [2024-10-14 17:08:50,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688508295] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:50,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:50,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:08:50,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841594925] [2024-10-14 17:08:50,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:50,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:50,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:50,764 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 204 [2024-10-14 17:08:50,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 184 transitions, 404 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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 17:08:50,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:50,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 204 [2024-10-14 17:08:50,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:51,957 INFO L124 PetriNetUnfolderBase]: 3894/14611 cut-off events. [2024-10-14 17:08:51,958 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2024-10-14 17:08:51,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21162 conditions, 14611 events. 3894/14611 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 164005 event pairs, 1530 based on Foata normal form. 0/13069 useless extension candidates. Maximal degree in co-relation 20044. Up to 3516 conditions per place. [2024-10-14 17:08:52,030 INFO L140 encePairwiseOnDemand]: 185/204 looper letters, 58 selfloop transitions, 14 changer transitions 0/217 dead transitions. [2024-10-14 17:08:52,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 217 transitions, 625 flow [2024-10-14 17:08:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2024-10-14 17:08:52,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8415032679738562 [2024-10-14 17:08:52,033 INFO L175 Difference]: Start difference. First operand has 192 places, 184 transitions, 404 flow. Second operand 3 states and 515 transitions. [2024-10-14 17:08:52,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 217 transitions, 625 flow [2024-10-14 17:08:52,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 217 transitions, 613 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 17:08:52,037 INFO L231 Difference]: Finished difference. Result has 191 places, 198 transitions, 514 flow [2024-10-14 17:08:52,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=191, PETRI_TRANSITIONS=198} [2024-10-14 17:08:52,038 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, 3 predicate places. [2024-10-14 17:08:52,038 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 198 transitions, 514 flow [2024-10-14 17:08:52,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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 17:08:52,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:52,039 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] [2024-10-14 17:08:52,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 17:08:52,039 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:08:52,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:52,040 INFO L85 PathProgramCache]: Analyzing trace with hash -368572323, now seen corresponding path program 1 times [2024-10-14 17:08:52,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:52,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114121423] [2024-10-14 17:08:52,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:52,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:52,079 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 17:08:52,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:52,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114121423] [2024-10-14 17:08:52,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114121423] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:52,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:52,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:08:52,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073145337] [2024-10-14 17:08:52,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:52,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:52,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:52,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:52,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:52,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 204 [2024-10-14 17:08:52,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 514 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 17:08:52,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:52,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 204 [2024-10-14 17:08:52,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:54,261 INFO L124 PetriNetUnfolderBase]: 4021/16464 cut-off events. [2024-10-14 17:08:54,261 INFO L125 PetriNetUnfolderBase]: For 4445/4626 co-relation queries the response was YES. [2024-10-14 17:08:54,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27152 conditions, 16464 events. 4021/16464 cut-off events. For 4445/4626 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 193929 event pairs, 2411 based on Foata normal form. 46/14965 useless extension candidates. Maximal degree in co-relation 13739. Up to 5498 conditions per place. [2024-10-14 17:08:54,423 INFO L140 encePairwiseOnDemand]: 195/204 looper letters, 52 selfloop transitions, 14 changer transitions 0/222 dead transitions. [2024-10-14 17:08:54,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 222 transitions, 732 flow [2024-10-14 17:08:54,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:54,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2024-10-14 17:08:54,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8316993464052288 [2024-10-14 17:08:54,426 INFO L175 Difference]: Start difference. First operand has 191 places, 198 transitions, 514 flow. Second operand 3 states and 509 transitions. [2024-10-14 17:08:54,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 222 transitions, 732 flow [2024-10-14 17:08:54,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 222 transitions, 694 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:08:54,449 INFO L231 Difference]: Finished difference. Result has 193 places, 210 transitions, 612 flow [2024-10-14 17:08:54,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=612, PETRI_PLACES=193, PETRI_TRANSITIONS=210} [2024-10-14 17:08:54,454 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, 5 predicate places. [2024-10-14 17:08:54,455 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 210 transitions, 612 flow [2024-10-14 17:08:54,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 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 17:08:54,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:54,456 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, 1, 1, 1, 1] [2024-10-14 17:08:54,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 17:08:54,456 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:08:54,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:54,457 INFO L85 PathProgramCache]: Analyzing trace with hash 556786939, now seen corresponding path program 1 times [2024-10-14 17:08:54,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:54,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619072287] [2024-10-14 17:08:54,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:54,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:54,610 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 17:08:54,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:54,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619072287] [2024-10-14 17:08:54,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619072287] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:08:54,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720924235] [2024-10-14 17:08:54,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:54,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:08:54,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:08:54,613 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 17:08:54,617 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 17:08:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:54,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 17:08:54,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:08:54,780 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 17:08:54,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:08:54,825 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 17:08:54,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720924235] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:08:54,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:08:54,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 17:08:54,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22457530] [2024-10-14 17:08:54,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:08:54,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:08:54,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:54,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:08:54,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:08:54,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 204 [2024-10-14 17:08:54,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 210 transitions, 612 flow. Second operand has 10 states, 10 states have (on average 158.5) internal successors, (1585), 10 states have internal predecessors, (1585), 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 17:08:54,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:54,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 204 [2024-10-14 17:08:54,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:55,419 INFO L124 PetriNetUnfolderBase]: 806/4161 cut-off events. [2024-10-14 17:08:55,420 INFO L125 PetriNetUnfolderBase]: For 628/679 co-relation queries the response was YES. [2024-10-14 17:08:55,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6432 conditions, 4161 events. 806/4161 cut-off events. For 628/679 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 39610 event pairs, 47 based on Foata normal form. 110/3965 useless extension candidates. Maximal degree in co-relation 3055. Up to 470 conditions per place. [2024-10-14 17:08:55,452 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 72 selfloop transitions, 7 changer transitions 0/217 dead transitions. [2024-10-14 17:08:55,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 217 transitions, 738 flow [2024-10-14 17:08:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 17:08:55,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 17:08:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1485 transitions. [2024-10-14 17:08:55,456 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8088235294117647 [2024-10-14 17:08:55,456 INFO L175 Difference]: Start difference. First operand has 193 places, 210 transitions, 612 flow. Second operand 9 states and 1485 transitions. [2024-10-14 17:08:55,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 217 transitions, 738 flow [2024-10-14 17:08:55,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 217 transitions, 718 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:08:55,463 INFO L231 Difference]: Finished difference. Result has 156 places, 161 transitions, 462 flow [2024-10-14 17:08:55,464 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=462, PETRI_PLACES=156, PETRI_TRANSITIONS=161} [2024-10-14 17:08:55,464 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, -32 predicate places. [2024-10-14 17:08:55,465 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 161 transitions, 462 flow [2024-10-14 17:08:55,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.5) internal successors, (1585), 10 states have internal predecessors, (1585), 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 17:08:55,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:55,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:08:55,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 17:08:55,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-14 17:08:55,671 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:08:55,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:55,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1630048700, now seen corresponding path program 1 times [2024-10-14 17:08:55,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:55,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836939400] [2024-10-14 17:08:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:55,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:55,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 17:08:55,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836939400] [2024-10-14 17:08:55,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836939400] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:55,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:55,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:08:55,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569687564] [2024-10-14 17:08:55,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:55,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:55,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:55,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 204 [2024-10-14 17:08:55,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 161 transitions, 462 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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 17:08:55,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:55,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 204 [2024-10-14 17:08:55,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:55,845 INFO L124 PetriNetUnfolderBase]: 261/1302 cut-off events. [2024-10-14 17:08:55,845 INFO L125 PetriNetUnfolderBase]: For 448/469 co-relation queries the response was YES. [2024-10-14 17:08:55,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1302 events. 261/1302 cut-off events. For 448/469 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 8676 event pairs, 132 based on Foata normal form. 7/1216 useless extension candidates. Maximal degree in co-relation 2262. Up to 459 conditions per place. [2024-10-14 17:08:55,853 INFO L140 encePairwiseOnDemand]: 196/204 looper letters, 42 selfloop transitions, 12 changer transitions 0/175 dead transitions. [2024-10-14 17:08:55,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 175 transitions, 614 flow [2024-10-14 17:08:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2024-10-14 17:08:55,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8088235294117647 [2024-10-14 17:08:55,855 INFO L175 Difference]: Start difference. First operand has 156 places, 161 transitions, 462 flow. Second operand 3 states and 495 transitions. [2024-10-14 17:08:55,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 175 transitions, 614 flow [2024-10-14 17:08:55,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 175 transitions, 599 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-14 17:08:55,860 INFO L231 Difference]: Finished difference. Result has 155 places, 169 transitions, 545 flow [2024-10-14 17:08:55,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=545, PETRI_PLACES=155, PETRI_TRANSITIONS=169} [2024-10-14 17:08:55,861 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, -33 predicate places. [2024-10-14 17:08:55,861 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 169 transitions, 545 flow [2024-10-14 17:08:55,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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 17:08:55,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:55,862 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:08:55,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 17:08:55,862 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:08:55,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:55,863 INFO L85 PathProgramCache]: Analyzing trace with hash -617759989, now seen corresponding path program 1 times [2024-10-14 17:08:55,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:55,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141927588] [2024-10-14 17:08:55,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:55,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:55,897 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 17:08:55,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:55,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141927588] [2024-10-14 17:08:55,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141927588] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:55,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:55,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:08:55,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720110651] [2024-10-14 17:08:55,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:55,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:55,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:55,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:55,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:55,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 204 [2024-10-14 17:08:55,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 169 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 17:08:55,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:55,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 204 [2024-10-14 17:08:55,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:56,053 INFO L124 PetriNetUnfolderBase]: 292/1374 cut-off events. [2024-10-14 17:08:56,054 INFO L125 PetriNetUnfolderBase]: For 1085/1120 co-relation queries the response was YES. [2024-10-14 17:08:56,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2801 conditions, 1374 events. 292/1374 cut-off events. For 1085/1120 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9372 event pairs, 134 based on Foata normal form. 9/1306 useless extension candidates. Maximal degree in co-relation 2719. Up to 501 conditions per place. [2024-10-14 17:08:56,063 INFO L140 encePairwiseOnDemand]: 196/204 looper letters, 49 selfloop transitions, 12 changer transitions 0/184 dead transitions. [2024-10-14 17:08:56,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 184 transitions, 734 flow [2024-10-14 17:08:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2024-10-14 17:08:56,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8104575163398693 [2024-10-14 17:08:56,065 INFO L175 Difference]: Start difference. First operand has 155 places, 169 transitions, 545 flow. Second operand 3 states and 496 transitions. [2024-10-14 17:08:56,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 184 transitions, 734 flow [2024-10-14 17:08:56,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 184 transitions, 706 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:08:56,070 INFO L231 Difference]: Finished difference. Result has 157 places, 177 transitions, 631 flow [2024-10-14 17:08:56,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=631, PETRI_PLACES=157, PETRI_TRANSITIONS=177} [2024-10-14 17:08:56,071 INFO L277 CegarLoopForPetriNet]: 188 programPoint places, -31 predicate places. [2024-10-14 17:08:56,071 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 177 transitions, 631 flow [2024-10-14 17:08:56,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 17:08:56,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:56,072 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, 1, 1, 1, 1, 1] [2024-10-14 17:08:56,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 17:08:56,072 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:08:56,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:56,073 INFO L85 PathProgramCache]: Analyzing trace with hash -785800553, now seen corresponding path program 1 times [2024-10-14 17:08:56,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:56,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657709738] [2024-10-14 17:08:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:56,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:08:56,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:08:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:08:56,118 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:08:56,119 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:08:56,119 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-10-14 17:08:56,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-10-14 17:08:56,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-10-14 17:08:56,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-10-14 17:08:56,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-10-14 17:08:56,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-10-14 17:08:56,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-10-14 17:08:56,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-10-14 17:08:56,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-10-14 17:08:56,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-10-14 17:08:56,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-10-14 17:08:56,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-10-14 17:08:56,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-10-14 17:08:56,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-10-14 17:08:56,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-10-14 17:08:56,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-10-14 17:08:56,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 17:08:56,121 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:08:56,122 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 17:08:56,122 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 17:08:56,144 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 17:08:56,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 253 transitions, 533 flow [2024-10-14 17:08:56,189 INFO L124 PetriNetUnfolderBase]: 55/531 cut-off events. [2024-10-14 17:08:56,189 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-14 17:08:56,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 531 events. 55/531 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1984 event pairs, 1 based on Foata normal form. 0/444 useless extension candidates. Maximal degree in co-relation 358. Up to 16 conditions per place. [2024-10-14 17:08:56,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 253 transitions, 533 flow [2024-10-14 17:08:56,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 253 transitions, 533 flow [2024-10-14 17:08:56,197 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:08:56,198 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;@5a3311f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:08:56,198 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-14 17:08:56,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:08:56,201 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-14 17:08:56,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:08:56,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:56,202 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] [2024-10-14 17:08:56,202 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 17:08:56,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:56,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1041899757, now seen corresponding path program 1 times [2024-10-14 17:08:56,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:56,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546945753] [2024-10-14 17:08:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:56,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:56,232 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 17:08:56,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:56,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546945753] [2024-10-14 17:08:56,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546945753] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:56,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:56,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:08:56,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275608691] [2024-10-14 17:08:56,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:56,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:56,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:56,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:56,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:56,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 253 [2024-10-14 17:08:56,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 253 transitions, 533 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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 17:08:56,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:56,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 253 [2024-10-14 17:08:56,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:00,302 INFO L124 PetriNetUnfolderBase]: 8949/35357 cut-off events. [2024-10-14 17:09:00,302 INFO L125 PetriNetUnfolderBase]: For 937/937 co-relation queries the response was YES. [2024-10-14 17:09:00,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48595 conditions, 35357 events. 8949/35357 cut-off events. For 937/937 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 457962 event pairs, 8324 based on Foata normal form. 7648/39622 useless extension candidates. Maximal degree in co-relation 35526. Up to 12802 conditions per place. [2024-10-14 17:09:00,569 INFO L140 encePairwiseOnDemand]: 226/253 looper letters, 39 selfloop transitions, 2 changer transitions 0/234 dead transitions. [2024-10-14 17:09:00,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 234 transitions, 577 flow [2024-10-14 17:09:00,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 655 transitions. [2024-10-14 17:09:00,571 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8629776021080369 [2024-10-14 17:09:00,572 INFO L175 Difference]: Start difference. First operand has 232 places, 253 transitions, 533 flow. Second operand 3 states and 655 transitions. [2024-10-14 17:09:00,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 234 transitions, 577 flow [2024-10-14 17:09:00,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 234 transitions, 577 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:00,575 INFO L231 Difference]: Finished difference. Result has 233 places, 228 transitions, 493 flow [2024-10-14 17:09:00,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=493, PETRI_PLACES=233, PETRI_TRANSITIONS=228} [2024-10-14 17:09:00,576 INFO L277 CegarLoopForPetriNet]: 232 programPoint places, 1 predicate places. [2024-10-14 17:09:00,576 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 228 transitions, 493 flow [2024-10-14 17:09:00,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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 17:09:00,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:00,577 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] [2024-10-14 17:09:00,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 17:09:00,577 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 17:09:00,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:00,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1549201355, now seen corresponding path program 1 times [2024-10-14 17:09:00,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:00,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649082260] [2024-10-14 17:09:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:00,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:00,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:00,752 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 17:09:00,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649082260] [2024-10-14 17:09:00,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649082260] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:00,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:00,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:09:00,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990343696] [2024-10-14 17:09:00,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:00,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:09:00,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:00,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:09:00,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:09:00,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 253 [2024-10-14 17:09:00,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 228 transitions, 493 flow. Second operand has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 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 17:09:00,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:00,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 253 [2024-10-14 17:09:00,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:06,141 INFO L124 PetriNetUnfolderBase]: 19556/50630 cut-off events. [2024-10-14 17:09:06,141 INFO L125 PetriNetUnfolderBase]: For 1427/1427 co-relation queries the response was YES. [2024-10-14 17:09:06,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79790 conditions, 50630 events. 19556/50630 cut-off events. For 1427/1427 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 609707 event pairs, 2086 based on Foata normal form. 0/47257 useless extension candidates. Maximal degree in co-relation 56847. Up to 20048 conditions per place. [2024-10-14 17:09:06,445 INFO L140 encePairwiseOnDemand]: 247/253 looper letters, 112 selfloop transitions, 6 changer transitions 0/299 dead transitions. [2024-10-14 17:09:06,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 299 transitions, 871 flow [2024-10-14 17:09:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:09:06,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:09:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1210 transitions. [2024-10-14 17:09:06,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7971014492753623 [2024-10-14 17:09:06,451 INFO L175 Difference]: Start difference. First operand has 233 places, 228 transitions, 493 flow. Second operand 6 states and 1210 transitions. [2024-10-14 17:09:06,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 299 transitions, 871 flow [2024-10-14 17:09:06,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 299 transitions, 869 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:09:06,455 INFO L231 Difference]: Finished difference. Result has 236 places, 227 transitions, 501 flow [2024-10-14 17:09:06,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=501, PETRI_PLACES=236, PETRI_TRANSITIONS=227} [2024-10-14 17:09:06,457 INFO L277 CegarLoopForPetriNet]: 232 programPoint places, 4 predicate places. [2024-10-14 17:09:06,457 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 227 transitions, 501 flow [2024-10-14 17:09:06,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 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 17:09:06,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:06,458 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] [2024-10-14 17:09:06,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 17:09:06,459 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 17:09:06,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:06,459 INFO L85 PathProgramCache]: Analyzing trace with hash 552201615, now seen corresponding path program 1 times [2024-10-14 17:09:06,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:06,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949765411] [2024-10-14 17:09:06,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:06,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:06,485 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 17:09:06,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:06,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949765411] [2024-10-14 17:09:06,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949765411] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:06,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:06,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:06,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848408573] [2024-10-14 17:09:06,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:06,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:06,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:06,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:06,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:06,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 253 [2024-10-14 17:09:06,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 227 transitions, 501 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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 17:09:06,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:06,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 253 [2024-10-14 17:09:06,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand