./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:53:56,148 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:53:56,206 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:53:56,210 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:53:56,211 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:53:56,236 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:53:56,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:53:56,239 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:53:56,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:53:56,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:53:56,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:53:56,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:53:56,242 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:53:56,242 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:53:56,244 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:53:56,244 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:53:56,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:53:56,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:53:56,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:53:56,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:53:56,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:53:56,251 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:53:56,251 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:53:56,251 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:53:56,251 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:53:56,252 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:53:56,252 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:53:56,252 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:53:56,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:53:56,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:53:56,253 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:53:56,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:53:56,253 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:53:56,253 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:53:56,254 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:53:56,254 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:53:56,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:53:56,255 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:53:56,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:53:56,256 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:53:56,256 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:53:56,257 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2024-10-13 09:53:56,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:53:56,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:53:56,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:53:56,523 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:53:56,523 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:53:56,525 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2024-10-13 09:53:57,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:53:58,256 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:53:58,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2024-10-13 09:53:58,282 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/361b7ca3e/29ecb3fe2ded44beaa3c39e7aabce9ff/FLAG138c581e9 [2024-10-13 09:53:58,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/361b7ca3e/29ecb3fe2ded44beaa3c39e7aabce9ff [2024-10-13 09:53:58,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:53:58,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:53:58,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:53:58,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:53:58,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:53:58,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:53:58" (1/1) ... [2024-10-13 09:53:58,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a099c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:58, skipping insertion in model container [2024-10-13 09:53:58,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:53:58" (1/1) ... [2024-10-13 09:53:58,618 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:53:59,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:53:59,231 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:53:59,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:53:59,356 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:53:59,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59 WrapperNode [2024-10-13 09:53:59,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:53:59,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:53:59,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:53:59,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:53:59,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (1/1) ... [2024-10-13 09:53:59,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (1/1) ... [2024-10-13 09:53:59,428 INFO L138 Inliner]: procedures = 274, calls = 53, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 218 [2024-10-13 09:53:59,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:53:59,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:53:59,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:53:59,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:53:59,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (1/1) ... [2024-10-13 09:53:59,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (1/1) ... [2024-10-13 09:53:59,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (1/1) ... [2024-10-13 09:53:59,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (1/1) ... [2024-10-13 09:53:59,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (1/1) ... [2024-10-13 09:53:59,468 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (1/1) ... [2024-10-13 09:53:59,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (1/1) ... [2024-10-13 09:53:59,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (1/1) ... [2024-10-13 09:53:59,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:53:59,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:53:59,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:53:59,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:53:59,476 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (1/1) ... [2024-10-13 09:53:59,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:53:59,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:53:59,510 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) [2024-10-13 09:53:59,513 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 [2024-10-13 09:53:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 09:53:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 09:53:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:53:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:53:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:53:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:53:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:53:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 09:53:59,560 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 09:53:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:53:59,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:53:59,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:53:59,563 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:53:59,707 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:53:59,709 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:54:00,036 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:54:00,036 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:54:00,089 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:54:00,090 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-13 09:54:00,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:00 BoogieIcfgContainer [2024-10-13 09:54:00,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:54:00,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:54:00,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:54:00,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:54:00,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:53:58" (1/3) ... [2024-10-13 09:54:00,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33050182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:00, skipping insertion in model container [2024-10-13 09:54:00,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:59" (2/3) ... [2024-10-13 09:54:00,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33050182 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:00, skipping insertion in model container [2024-10-13 09:54:00,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:00" (3/3) ... [2024-10-13 09:54:00,100 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2024-10-13 09:54:00,114 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:54:00,115 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2024-10-13 09:54:00,115 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:54:00,184 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 09:54:00,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 215 transitions, 437 flow [2024-10-13 09:54:00,339 INFO L124 PetriNetUnfolderBase]: 26/284 cut-off events. [2024-10-13 09:54:00,339 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:54:00,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 284 events. 26/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 994 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 176. Up to 4 conditions per place. [2024-10-13 09:54:00,353 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 215 transitions, 437 flow [2024-10-13 09:54:00,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 215 transitions, 437 flow [2024-10-13 09:54:00,376 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:54:00,387 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;@4c07b520, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:54:00,387 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-13 09:54:00,401 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:54:00,401 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-13 09:54:00,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:54:00,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:00,402 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:00,403 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-13 09:54:00,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1309174075, now seen corresponding path program 1 times [2024-10-13 09:54:00,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:00,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455916803] [2024-10-13 09:54:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:00,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:00,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:00,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455916803] [2024-10-13 09:54:00,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455916803] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:00,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:00,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:54:00,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915718919] [2024-10-13 09:54:00,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:00,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:00,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:00,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:00,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:00,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 215 [2024-10-13 09:54:00,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 215 transitions, 437 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:00,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:00,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 215 [2024-10-13 09:54:00,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:01,233 INFO L124 PetriNetUnfolderBase]: 123/1110 cut-off events. [2024-10-13 09:54:01,234 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 09:54:01,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1383 conditions, 1110 events. 123/1110 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7366 event pairs, 108 based on Foata normal form. 131/1116 useless extension candidates. Maximal degree in co-relation 1306. Up to 254 conditions per place. [2024-10-13 09:54:01,249 INFO L140 encePairwiseOnDemand]: 194/215 looper letters, 36 selfloop transitions, 2 changer transitions 0/207 dead transitions. [2024-10-13 09:54:01,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 207 transitions, 497 flow [2024-10-13 09:54:01,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:01,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2024-10-13 09:54:01,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8992248062015504 [2024-10-13 09:54:01,269 INFO L175 Difference]: Start difference. First operand has 198 places, 215 transitions, 437 flow. Second operand 3 states and 580 transitions. [2024-10-13 09:54:01,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 207 transitions, 497 flow [2024-10-13 09:54:01,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 207 transitions, 497 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:54:01,280 INFO L231 Difference]: Finished difference. Result has 199 places, 195 transitions, 405 flow [2024-10-13 09:54:01,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=199, PETRI_TRANSITIONS=195} [2024-10-13 09:54:01,288 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 1 predicate places. [2024-10-13 09:54:01,288 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 195 transitions, 405 flow [2024-10-13 09:54:01,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:01,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:01,289 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:01,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:54:01,289 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-13 09:54:01,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:01,291 INFO L85 PathProgramCache]: Analyzing trace with hash -956092991, now seen corresponding path program 1 times [2024-10-13 09:54:01,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:01,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845344029] [2024-10-13 09:54:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:01,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:01,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:01,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845344029] [2024-10-13 09:54:01,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845344029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:01,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:01,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:54:01,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987028234] [2024-10-13 09:54:01,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:01,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:54:01,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:01,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:54:01,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:54:02,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 215 [2024-10-13 09:54:02,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 195 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:02,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:02,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 215 [2024-10-13 09:54:02,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:02,432 INFO L124 PetriNetUnfolderBase]: 246/1513 cut-off events. [2024-10-13 09:54:02,433 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-10-13 09:54:02,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 1513 events. 246/1513 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11580 event pairs, 179 based on Foata normal form. 0/1368 useless extension candidates. Maximal degree in co-relation 1986. Up to 387 conditions per place. [2024-10-13 09:54:02,444 INFO L140 encePairwiseOnDemand]: 209/215 looper letters, 80 selfloop transitions, 5 changer transitions 0/242 dead transitions. [2024-10-13 09:54:02,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 242 transitions, 669 flow [2024-10-13 09:54:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:54:02,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:54:02,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1034 transitions. [2024-10-13 09:54:02,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8015503875968992 [2024-10-13 09:54:02,450 INFO L175 Difference]: Start difference. First operand has 199 places, 195 transitions, 405 flow. Second operand 6 states and 1034 transitions. [2024-10-13 09:54:02,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 242 transitions, 669 flow [2024-10-13 09:54:02,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 242 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:02,457 INFO L231 Difference]: Finished difference. Result has 201 places, 194 transitions, 409 flow [2024-10-13 09:54:02,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=409, PETRI_PLACES=201, PETRI_TRANSITIONS=194} [2024-10-13 09:54:02,460 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 3 predicate places. [2024-10-13 09:54:02,460 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 194 transitions, 409 flow [2024-10-13 09:54:02,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.5) internal successors, (957), 6 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:02,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:02,462 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:02,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:54:02,462 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-13 09:54:02,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash -917997421, now seen corresponding path program 1 times [2024-10-13 09:54:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:02,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019296428] [2024-10-13 09:54:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:02,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:02,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:02,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:02,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019296428] [2024-10-13 09:54:02,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019296428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:02,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:02,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:02,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663585501] [2024-10-13 09:54:02,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:02,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:02,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:02,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:02,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:02,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 215 [2024-10-13 09:54:02,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 194 transitions, 409 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:02,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:02,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 215 [2024-10-13 09:54:02,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:02,782 INFO L124 PetriNetUnfolderBase]: 170/1602 cut-off events. [2024-10-13 09:54:02,782 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 09:54:02,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 1602 events. 170/1602 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12540 event pairs, 12 based on Foata normal form. 0/1433 useless extension candidates. Maximal degree in co-relation 1920. Up to 189 conditions per place. [2024-10-13 09:54:02,794 INFO L140 encePairwiseOnDemand]: 211/215 looper letters, 41 selfloop transitions, 3 changer transitions 0/214 dead transitions. [2024-10-13 09:54:02,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 214 transitions, 540 flow [2024-10-13 09:54:02,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:02,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2024-10-13 09:54:02,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8697674418604651 [2024-10-13 09:54:02,798 INFO L175 Difference]: Start difference. First operand has 201 places, 194 transitions, 409 flow. Second operand 3 states and 561 transitions. [2024-10-13 09:54:02,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 214 transitions, 540 flow [2024-10-13 09:54:02,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 214 transitions, 530 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:54:02,805 INFO L231 Difference]: Finished difference. Result has 200 places, 196 transitions, 421 flow [2024-10-13 09:54:02,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=421, PETRI_PLACES=200, PETRI_TRANSITIONS=196} [2024-10-13 09:54:02,806 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 2 predicate places. [2024-10-13 09:54:02,807 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 196 transitions, 421 flow [2024-10-13 09:54:02,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:02,807 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:02,807 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:02,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:54:02,808 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-13 09:54:02,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:02,809 INFO L85 PathProgramCache]: Analyzing trace with hash 361966522, now seen corresponding path program 1 times [2024-10-13 09:54:02,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:02,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186834711] [2024-10-13 09:54:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:02,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:02,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:02,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:02,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186834711] [2024-10-13 09:54:02,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186834711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:54:02,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24550914] [2024-10-13 09:54:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:02,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:54:02,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:54:02,939 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) [2024-10-13 09:54:02,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 09:54:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:03,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 09:54:03,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:54:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:54:03,105 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:54:03,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24550914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:03,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:54:03,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-13 09:54:03,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262606960] [2024-10-13 09:54:03,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:03,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:03,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:03,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:03,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:54:03,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 215 [2024-10-13 09:54:03,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 196 transitions, 421 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:03,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:03,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 215 [2024-10-13 09:54:03,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:03,449 INFO L124 PetriNetUnfolderBase]: 278/2141 cut-off events. [2024-10-13 09:54:03,450 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-13 09:54:03,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 2141 events. 278/2141 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17981 event pairs, 204 based on Foata normal form. 0/1879 useless extension candidates. Maximal degree in co-relation 2739. Up to 497 conditions per place. [2024-10-13 09:54:03,463 INFO L140 encePairwiseOnDemand]: 210/215 looper letters, 39 selfloop transitions, 5 changer transitions 0/211 dead transitions. [2024-10-13 09:54:03,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 211 transitions, 543 flow [2024-10-13 09:54:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2024-10-13 09:54:03,467 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8496124031007752 [2024-10-13 09:54:03,467 INFO L175 Difference]: Start difference. First operand has 200 places, 196 transitions, 421 flow. Second operand 3 states and 548 transitions. [2024-10-13 09:54:03,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 211 transitions, 543 flow [2024-10-13 09:54:03,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 211 transitions, 535 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:03,473 INFO L231 Difference]: Finished difference. Result has 202 places, 199 transitions, 451 flow [2024-10-13 09:54:03,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=215, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=202, PETRI_TRANSITIONS=199} [2024-10-13 09:54:03,475 INFO L277 CegarLoopForPetriNet]: 198 programPoint places, 4 predicate places. [2024-10-13 09:54:03,475 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 199 transitions, 451 flow [2024-10-13 09:54:03,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:03,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:03,476 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:03,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 09:54:03,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:54:03,677 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-13 09:54:03,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:03,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1885480934, now seen corresponding path program 1 times [2024-10-13 09:54:03,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:03,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045958980] [2024-10-13 09:54:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:03,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:54:03,701 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:54:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:54:03,740 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:54:03,741 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:54:03,742 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-13 09:54:03,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-10-13 09:54:03,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-10-13 09:54:03,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-10-13 09:54:03,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-10-13 09:54:03,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-10-13 09:54:03,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-10-13 09:54:03,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-10-13 09:54:03,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-10-13 09:54:03,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-10-13 09:54:03,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-10-13 09:54:03,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-10-13 09:54:03,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-10-13 09:54:03,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-10-13 09:54:03,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-10-13 09:54:03,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-10-13 09:54:03,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-10-13 09:54:03,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-10-13 09:54:03,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-10-13 09:54:03,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-10-13 09:54:03,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-10-13 09:54:03,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-10-13 09:54:03,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-10-13 09:54:03,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:54:03,750 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-13 09:54:03,753 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:54:03,754 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:54:03,802 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 09:54:03,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 321 transitions, 658 flow [2024-10-13 09:54:03,865 INFO L124 PetriNetUnfolderBase]: 48/487 cut-off events. [2024-10-13 09:54:03,865 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 09:54:03,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 487 events. 48/487 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2078 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 302. Up to 8 conditions per place. [2024-10-13 09:54:03,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 321 transitions, 658 flow [2024-10-13 09:54:03,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 321 transitions, 658 flow [2024-10-13 09:54:03,883 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:54:03,884 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;@4c07b520, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:54:03,884 INFO L334 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-10-13 09:54:03,890 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:54:03,891 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-13 09:54:03,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:54:03,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:03,891 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:03,891 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-13 09:54:03,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:03,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1306899846, now seen corresponding path program 1 times [2024-10-13 09:54:03,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:03,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369797705] [2024-10-13 09:54:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:03,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:03,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369797705] [2024-10-13 09:54:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369797705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:03,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:03,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:54:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202228555] [2024-10-13 09:54:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:03,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:03,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:03,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:03,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 321 [2024-10-13 09:54:03,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 321 transitions, 658 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:03,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:03,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 321 [2024-10-13 09:54:03,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:06,409 INFO L124 PetriNetUnfolderBase]: 3460/16760 cut-off events. [2024-10-13 09:54:06,409 INFO L125 PetriNetUnfolderBase]: For 293/293 co-relation queries the response was YES. [2024-10-13 09:54:06,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22311 conditions, 16760 events. 3460/16760 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 208716 event pairs, 1584 based on Foata normal form. 3090/18209 useless extension candidates. Maximal degree in co-relation 1883. Up to 5465 conditions per place. [2024-10-13 09:54:06,543 INFO L140 encePairwiseOnDemand]: 288/321 looper letters, 51 selfloop transitions, 2 changer transitions 0/302 dead transitions. [2024-10-13 09:54:06,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 302 transitions, 726 flow [2024-10-13 09:54:06,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:06,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2024-10-13 09:54:06,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8795430944963655 [2024-10-13 09:54:06,546 INFO L175 Difference]: Start difference. First operand has 292 places, 321 transitions, 658 flow. Second operand 3 states and 847 transitions. [2024-10-13 09:54:06,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 302 transitions, 726 flow [2024-10-13 09:54:06,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 302 transitions, 726 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:54:06,556 INFO L231 Difference]: Finished difference. Result has 293 places, 290 transitions, 606 flow [2024-10-13 09:54:06,556 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=293, PETRI_TRANSITIONS=290} [2024-10-13 09:54:06,558 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, 1 predicate places. [2024-10-13 09:54:06,558 INFO L471 AbstractCegarLoop]: Abstraction has has 293 places, 290 transitions, 606 flow [2024-10-13 09:54:06,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:06,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:06,559 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:06,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:54:06,560 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-13 09:54:06,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:06,560 INFO L85 PathProgramCache]: Analyzing trace with hash 535087202, now seen corresponding path program 1 times [2024-10-13 09:54:06,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:06,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222437184] [2024-10-13 09:54:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:06,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:06,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:06,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222437184] [2024-10-13 09:54:06,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222437184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:06,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:06,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:54:06,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514718497] [2024-10-13 09:54:06,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:06,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:54:06,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:06,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:54:06,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:54:06,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 321 [2024-10-13 09:54:06,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 290 transitions, 606 flow. Second operand has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:06,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:06,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 321 [2024-10-13 09:54:06,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:10,477 INFO L124 PetriNetUnfolderBase]: 6961/28017 cut-off events. [2024-10-13 09:54:10,478 INFO L125 PetriNetUnfolderBase]: For 380/419 co-relation queries the response was YES. [2024-10-13 09:54:10,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39003 conditions, 28017 events. 6961/28017 cut-off events. For 380/419 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 366870 event pairs, 3202 based on Foata normal form. 0/25145 useless extension candidates. Maximal degree in co-relation 35839. Up to 7816 conditions per place. [2024-10-13 09:54:10,678 INFO L140 encePairwiseOnDemand]: 315/321 looper letters, 142 selfloop transitions, 6 changer transitions 0/385 dead transitions. [2024-10-13 09:54:10,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 385 transitions, 1092 flow [2024-10-13 09:54:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:54:10,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:54:10,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1576 transitions. [2024-10-13 09:54:10,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.818276220145379 [2024-10-13 09:54:10,683 INFO L175 Difference]: Start difference. First operand has 293 places, 290 transitions, 606 flow. Second operand 6 states and 1576 transitions. [2024-10-13 09:54:10,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 385 transitions, 1092 flow [2024-10-13 09:54:10,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 385 transitions, 1090 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:54:10,690 INFO L231 Difference]: Finished difference. Result has 296 places, 289 transitions, 614 flow [2024-10-13 09:54:10,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=614, PETRI_PLACES=296, PETRI_TRANSITIONS=289} [2024-10-13 09:54:10,692 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, 4 predicate places. [2024-10-13 09:54:10,693 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 289 transitions, 614 flow [2024-10-13 09:54:10,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:10,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:10,694 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:10,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:54:10,694 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-13 09:54:10,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:10,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1289677285, now seen corresponding path program 1 times [2024-10-13 09:54:10,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:10,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904985495] [2024-10-13 09:54:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:10,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:10,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:10,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904985495] [2024-10-13 09:54:10,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904985495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:10,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:10,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:10,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500513369] [2024-10-13 09:54:10,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:10,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:10,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:10,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:10,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 321 [2024-10-13 09:54:10,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 289 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:10,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:10,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 321 [2024-10-13 09:54:10,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:13,842 INFO L124 PetriNetUnfolderBase]: 6242/30828 cut-off events. [2024-10-13 09:54:13,842 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2024-10-13 09:54:13,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40778 conditions, 30828 events. 6242/30828 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 425040 event pairs, 1648 based on Foata normal form. 0/27517 useless extension candidates. Maximal degree in co-relation 38700. Up to 5556 conditions per place. [2024-10-13 09:54:14,033 INFO L140 encePairwiseOnDemand]: 314/321 looper letters, 74 selfloop transitions, 5 changer transitions 0/327 dead transitions. [2024-10-13 09:54:14,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 327 transitions, 859 flow [2024-10-13 09:54:14,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 828 transitions. [2024-10-13 09:54:14,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8598130841121495 [2024-10-13 09:54:14,036 INFO L175 Difference]: Start difference. First operand has 296 places, 289 transitions, 614 flow. Second operand 3 states and 828 transitions. [2024-10-13 09:54:14,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 327 transitions, 859 flow [2024-10-13 09:54:14,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 327 transitions, 847 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:54:14,041 INFO L231 Difference]: Finished difference. Result has 295 places, 294 transitions, 646 flow [2024-10-13 09:54:14,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=295, PETRI_TRANSITIONS=294} [2024-10-13 09:54:14,043 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, 3 predicate places. [2024-10-13 09:54:14,043 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 294 transitions, 646 flow [2024-10-13 09:54:14,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:14,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:14,044 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:14,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:54:14,044 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-13 09:54:14,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:14,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1978270771, now seen corresponding path program 1 times [2024-10-13 09:54:14,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:14,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544271465] [2024-10-13 09:54:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:14,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544271465] [2024-10-13 09:54:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544271465] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:54:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122711210] [2024-10-13 09:54:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:14,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:54:14,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:54:14,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:54:14,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 09:54:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:14,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 09:54:14,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:54:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:54:14,231 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:54:14,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122711210] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:14,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:54:14,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-13 09:54:14,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057758582] [2024-10-13 09:54:14,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:14,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:14,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:14,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:14,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:54:14,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 321 [2024-10-13 09:54:14,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 294 transitions, 646 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:14,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:14,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 321 [2024-10-13 09:54:14,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:18,500 INFO L124 PetriNetUnfolderBase]: 9743/42065 cut-off events. [2024-10-13 09:54:18,500 INFO L125 PetriNetUnfolderBase]: For 2190/2219 co-relation queries the response was YES. [2024-10-13 09:54:18,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59277 conditions, 42065 events. 9743/42065 cut-off events. For 2190/2219 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 594634 event pairs, 7040 based on Foata normal form. 24/37329 useless extension candidates. Maximal degree in co-relation 56381. Up to 12782 conditions per place. [2024-10-13 09:54:18,837 INFO L140 encePairwiseOnDemand]: 315/321 looper letters, 68 selfloop transitions, 8 changer transitions 0/324 dead transitions. [2024-10-13 09:54:18,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 324 transitions, 870 flow [2024-10-13 09:54:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 813 transitions. [2024-10-13 09:54:18,841 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8442367601246106 [2024-10-13 09:54:18,841 INFO L175 Difference]: Start difference. First operand has 295 places, 294 transitions, 646 flow. Second operand 3 states and 813 transitions. [2024-10-13 09:54:18,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 324 transitions, 870 flow [2024-10-13 09:54:18,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 324 transitions, 856 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:18,854 INFO L231 Difference]: Finished difference. Result has 297 places, 300 transitions, 702 flow [2024-10-13 09:54:18,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=297, PETRI_TRANSITIONS=300} [2024-10-13 09:54:18,857 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, 5 predicate places. [2024-10-13 09:54:18,857 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 300 transitions, 702 flow [2024-10-13 09:54:18,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:18,858 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:18,858 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:18,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 09:54:19,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-13 09:54:19,060 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-13 09:54:19,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:19,061 INFO L85 PathProgramCache]: Analyzing trace with hash -221513832, now seen corresponding path program 1 times [2024-10-13 09:54:19,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:19,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578757231] [2024-10-13 09:54:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:19,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:19,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:19,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578757231] [2024-10-13 09:54:19,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578757231] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:54:19,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805552457] [2024-10-13 09:54:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:19,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:54:19,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:54:19,157 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:54:19,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 09:54:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:19,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:54:19,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:54:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:19,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:54:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:19,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805552457] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:54:19,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:54:19,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:54:19,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915129429] [2024-10-13 09:54:19,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:54:19,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:54:19,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:19,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:54:19,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:54:19,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 321 [2024-10-13 09:54:19,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 300 transitions, 702 flow. Second operand has 10 states, 10 states have (on average 249.3) internal successors, (2493), 10 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:19,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:19,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 321 [2024-10-13 09:54:19,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:20,592 INFO L124 PetriNetUnfolderBase]: 1655/7366 cut-off events. [2024-10-13 09:54:20,592 INFO L125 PetriNetUnfolderBase]: For 271/274 co-relation queries the response was YES. [2024-10-13 09:54:20,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10370 conditions, 7366 events. 1655/7366 cut-off events. For 271/274 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 77786 event pairs, 2 based on Foata normal form. 215/7099 useless extension candidates. Maximal degree in co-relation 10362. Up to 1116 conditions per place. [2024-10-13 09:54:20,626 INFO L140 encePairwiseOnDemand]: 316/321 looper letters, 138 selfloop transitions, 7 changer transitions 0/346 dead transitions. [2024-10-13 09:54:20,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 346 transitions, 1018 flow [2024-10-13 09:54:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:54:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:54:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2370 transitions. [2024-10-13 09:54:20,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8203530633437176 [2024-10-13 09:54:20,635 INFO L175 Difference]: Start difference. First operand has 297 places, 300 transitions, 702 flow. Second operand 9 states and 2370 transitions. [2024-10-13 09:54:20,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 346 transitions, 1018 flow [2024-10-13 09:54:20,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 346 transitions, 1010 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-13 09:54:20,646 INFO L231 Difference]: Finished difference. Result has 247 places, 236 transitions, 514 flow [2024-10-13 09:54:20,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=514, PETRI_PLACES=247, PETRI_TRANSITIONS=236} [2024-10-13 09:54:20,648 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, -45 predicate places. [2024-10-13 09:54:20,648 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 236 transitions, 514 flow [2024-10-13 09:54:20,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 249.3) internal successors, (2493), 10 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:20,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:20,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:20,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 09:54:20,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:54:20,851 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-13 09:54:20,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:20,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2137229029, now seen corresponding path program 1 times [2024-10-13 09:54:20,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:20,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727328676] [2024-10-13 09:54:20,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:20,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:20,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:20,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727328676] [2024-10-13 09:54:20,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727328676] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:20,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:20,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:20,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009769208] [2024-10-13 09:54:20,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:20,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:20,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:20,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:20,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:20,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 321 [2024-10-13 09:54:20,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 236 transitions, 514 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:20,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:20,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 321 [2024-10-13 09:54:20,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:21,403 INFO L124 PetriNetUnfolderBase]: 872/4015 cut-off events. [2024-10-13 09:54:21,404 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-13 09:54:21,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5949 conditions, 4015 events. 872/4015 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 37244 event pairs, 377 based on Foata normal form. 0/3646 useless extension candidates. Maximal degree in co-relation 5941. Up to 1033 conditions per place. [2024-10-13 09:54:21,434 INFO L140 encePairwiseOnDemand]: 289/321 looper letters, 83 selfloop transitions, 24 changer transitions 0/285 dead transitions. [2024-10-13 09:54:21,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 285 transitions, 831 flow [2024-10-13 09:54:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:21,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 778 transitions. [2024-10-13 09:54:21,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8078920041536864 [2024-10-13 09:54:21,437 INFO L175 Difference]: Start difference. First operand has 247 places, 236 transitions, 514 flow. Second operand 3 states and 778 transitions. [2024-10-13 09:54:21,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 285 transitions, 831 flow [2024-10-13 09:54:21,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 285 transitions, 816 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-13 09:54:21,443 INFO L231 Difference]: Finished difference. Result has 246 places, 260 transitions, 707 flow [2024-10-13 09:54:21,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=707, PETRI_PLACES=246, PETRI_TRANSITIONS=260} [2024-10-13 09:54:21,444 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, -46 predicate places. [2024-10-13 09:54:21,444 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 260 transitions, 707 flow [2024-10-13 09:54:21,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:21,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:21,445 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:21,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:54:21,445 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-13 09:54:21,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:21,446 INFO L85 PathProgramCache]: Analyzing trace with hash 243584091, now seen corresponding path program 1 times [2024-10-13 09:54:21,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:21,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110858952] [2024-10-13 09:54:21,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:21,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:21,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:21,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110858952] [2024-10-13 09:54:21,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110858952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:21,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:21,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:21,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938299382] [2024-10-13 09:54:21,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:21,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:21,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:21,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:21,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:21,547 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 321 [2024-10-13 09:54:21,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 260 transitions, 707 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:21,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:21,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 321 [2024-10-13 09:54:21,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:22,054 INFO L124 PetriNetUnfolderBase]: 848/4128 cut-off events. [2024-10-13 09:54:22,054 INFO L125 PetriNetUnfolderBase]: For 1616/1680 co-relation queries the response was YES. [2024-10-13 09:54:22,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7357 conditions, 4128 events. 848/4128 cut-off events. For 1616/1680 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 39168 event pairs, 502 based on Foata normal form. 12/3852 useless extension candidates. Maximal degree in co-relation 7349. Up to 1516 conditions per place. [2024-10-13 09:54:22,085 INFO L140 encePairwiseOnDemand]: 309/321 looper letters, 75 selfloop transitions, 16 changer transitions 0/287 dead transitions. [2024-10-13 09:54:22,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 287 transitions, 988 flow [2024-10-13 09:54:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:22,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2024-10-13 09:54:22,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8006230529595015 [2024-10-13 09:54:22,087 INFO L175 Difference]: Start difference. First operand has 246 places, 260 transitions, 707 flow. Second operand 3 states and 771 transitions. [2024-10-13 09:54:22,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 287 transitions, 988 flow [2024-10-13 09:54:22,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 287 transitions, 924 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:22,097 INFO L231 Difference]: Finished difference. Result has 248 places, 274 transitions, 805 flow [2024-10-13 09:54:22,097 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=805, PETRI_PLACES=248, PETRI_TRANSITIONS=274} [2024-10-13 09:54:22,097 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, -44 predicate places. [2024-10-13 09:54:22,098 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 274 transitions, 805 flow [2024-10-13 09:54:22,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:22,098 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:22,098 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:22,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 09:54:22,099 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-13 09:54:22,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:22,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1076401122, now seen corresponding path program 1 times [2024-10-13 09:54:22,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:22,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649756046] [2024-10-13 09:54:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:22,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:22,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:22,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649756046] [2024-10-13 09:54:22,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649756046] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:22,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:22,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:22,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757580233] [2024-10-13 09:54:22,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:22,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:22,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:22,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:22,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:22,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 321 [2024-10-13 09:54:22,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 274 transitions, 805 flow. Second operand has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:22,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:22,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 321 [2024-10-13 09:54:22,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:22,590 INFO L124 PetriNetUnfolderBase]: 887/4297 cut-off events. [2024-10-13 09:54:22,590 INFO L125 PetriNetUnfolderBase]: For 1777/1857 co-relation queries the response was YES. [2024-10-13 09:54:22,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7723 conditions, 4297 events. 887/4297 cut-off events. For 1777/1857 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 41102 event pairs, 485 based on Foata normal form. 16/4001 useless extension candidates. Maximal degree in co-relation 7714. Up to 1571 conditions per place. [2024-10-13 09:54:22,628 INFO L140 encePairwiseOnDemand]: 309/321 looper letters, 87 selfloop transitions, 16 changer transitions 0/301 dead transitions. [2024-10-13 09:54:22,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 301 transitions, 1118 flow [2024-10-13 09:54:22,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:22,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:22,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2024-10-13 09:54:22,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8006230529595015 [2024-10-13 09:54:22,631 INFO L175 Difference]: Start difference. First operand has 248 places, 274 transitions, 805 flow. Second operand 3 states and 771 transitions. [2024-10-13 09:54:22,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 301 transitions, 1118 flow [2024-10-13 09:54:22,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 301 transitions, 1086 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:22,642 INFO L231 Difference]: Finished difference. Result has 250 places, 288 transitions, 943 flow [2024-10-13 09:54:22,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=943, PETRI_PLACES=250, PETRI_TRANSITIONS=288} [2024-10-13 09:54:22,643 INFO L277 CegarLoopForPetriNet]: 292 programPoint places, -42 predicate places. [2024-10-13 09:54:22,643 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 288 transitions, 943 flow [2024-10-13 09:54:22,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:22,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:22,644 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:22,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 09:54:22,645 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-13 09:54:22,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:22,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1379497538, now seen corresponding path program 1 times [2024-10-13 09:54:22,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:22,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962254930] [2024-10-13 09:54:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:54:22,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:54:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:54:22,695 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:54:22,695 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:54:22,696 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2024-10-13 09:54:22,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2024-10-13 09:54:22,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2024-10-13 09:54:22,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (28 of 32 remaining) [2024-10-13 09:54:22,696 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2024-10-13 09:54:22,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2024-10-13 09:54:22,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2024-10-13 09:54:22,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (24 of 32 remaining) [2024-10-13 09:54:22,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2024-10-13 09:54:22,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2024-10-13 09:54:22,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2024-10-13 09:54:22,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (20 of 32 remaining) [2024-10-13 09:54:22,697 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2024-10-13 09:54:22,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2024-10-13 09:54:22,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2024-10-13 09:54:22,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2024-10-13 09:54:22,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2024-10-13 09:54:22,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (14 of 32 remaining) [2024-10-13 09:54:22,698 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (13 of 32 remaining) [2024-10-13 09:54:22,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2024-10-13 09:54:22,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2024-10-13 09:54:22,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2024-10-13 09:54:22,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (9 of 32 remaining) [2024-10-13 09:54:22,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2024-10-13 09:54:22,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2024-10-13 09:54:22,699 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2024-10-13 09:54:22,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2024-10-13 09:54:22,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2024-10-13 09:54:22,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2024-10-13 09:54:22,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2024-10-13 09:54:22,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2024-10-13 09:54:22,700 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2024-10-13 09:54:22,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-13 09:54:22,700 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:22,701 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:54:22,701 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 09:54:22,748 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 09:54:22,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 427 transitions, 881 flow [2024-10-13 09:54:22,849 INFO L124 PetriNetUnfolderBase]: 75/735 cut-off events. [2024-10-13 09:54:22,849 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 09:54:22,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 735 events. 75/735 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3412 event pairs, 1 based on Foata normal form. 0/609 useless extension candidates. Maximal degree in co-relation 495. Up to 16 conditions per place. [2024-10-13 09:54:22,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 427 transitions, 881 flow [2024-10-13 09:54:22,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 386 places, 427 transitions, 881 flow [2024-10-13 09:54:22,872 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:54:22,873 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;@4c07b520, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:54:22,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-10-13 09:54:22,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:54:22,875 INFO L124 PetriNetUnfolderBase]: 1/49 cut-off events. [2024-10-13 09:54:22,875 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:54:22,875 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:22,876 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:22,876 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 38 more)] === [2024-10-13 09:54:22,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:22,876 INFO L85 PathProgramCache]: Analyzing trace with hash 639060913, now seen corresponding path program 1 times [2024-10-13 09:54:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:22,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134171540] [2024-10-13 09:54:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:22,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:22,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:22,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134171540] [2024-10-13 09:54:22,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134171540] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:22,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:22,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:54:22,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247372293] [2024-10-13 09:54:22,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:22,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:22,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:22,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:22,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:22,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 427 [2024-10-13 09:54:22,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 427 transitions, 881 flow. Second operand has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:54:22,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:22,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 427 [2024-10-13 09:54:22,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand