./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_02-simple_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4a390ef5 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_02-simple_racefree.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 b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 15:26:30,126 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 15:26:30,176 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-24 15:26:30,179 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 15:26:30,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 15:26:30,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 15:26:30,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 15:26:30,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 15:26:30,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 15:26:30,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 15:26:30,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 15:26:30,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 15:26:30,201 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 15:26:30,201 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 15:26:30,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 15:26:30,202 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 15:26:30,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 15:26:30,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 15:26:30,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 15:26:30,203 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 15:26:30,203 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 15:26:30,206 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 15:26:30,206 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-24 15:26:30,207 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 15:26:30,207 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 15:26:30,207 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 15:26:30,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 15:26:30,207 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 15:26:30,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 15:26:30,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 15:26:30,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 15:26:30,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:26:30,208 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 15:26:30,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 15:26:30,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 15:26:30,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 15:26:30,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 15:26:30,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 15:26:30,210 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 15:26:30,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 15:26:30,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 15:26:30,214 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 [2024-10-24 15:26:30,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 15:26:30,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 15:26:30,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 15:26:30,473 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 15:26:30,474 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 15:26:30,475 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2024-10-24 15:26:31,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 15:26:32,177 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 15:26:32,177 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_02-simple_racefree.i [2024-10-24 15:26:32,195 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c10cc96d/816c29e02f8c4ef6a88d1dba7d791f60/FLAG3471c878c [2024-10-24 15:26:32,499 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c10cc96d/816c29e02f8c4ef6a88d1dba7d791f60 [2024-10-24 15:26:32,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 15:26:32,503 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 15:26:32,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 15:26:32,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 15:26:32,509 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 15:26:32,510 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9f14b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32, skipping insertion in model container [2024-10-24 15:26:32,511 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 15:26:32,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:26:32,852 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 15:26:32,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:26:32,919 INFO L204 MainTranslator]: Completed translation [2024-10-24 15:26:32,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32 WrapperNode [2024-10-24 15:26:32,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 15:26:32,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 15:26:32,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 15:26:32,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 15:26:32,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,960 INFO L138 Inliner]: procedures = 171, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 99 [2024-10-24 15:26:32,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 15:26:32,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 15:26:32,961 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 15:26:32,961 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 15:26:32,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,975 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,981 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 15:26:32,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 15:26:32,990 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 15:26:32,991 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 15:26:32,991 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (1/1) ... [2024-10-24 15:26:32,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:26:33,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:26:33,018 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) [2024-10-24 15:26:33,021 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 [2024-10-24 15:26:33,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-24 15:26:33,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-24 15:26:33,083 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 15:26:33,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 15:26:33,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 15:26:33,089 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 15:26:33,089 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 15:26:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 15:26:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 15:26:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 15:26:33,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 15:26:33,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 15:26:33,091 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 15:26:33,191 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 15:26:33,193 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 15:26:33,418 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 15:26:33,419 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 15:26:33,460 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 15:26:33,460 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-24 15:26:33,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:26:33 BoogieIcfgContainer [2024-10-24 15:26:33,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 15:26:33,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 15:26:33,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 15:26:33,465 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 15:26:33,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:26:32" (1/3) ... [2024-10-24 15:26:33,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563f9c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:26:33, skipping insertion in model container [2024-10-24 15:26:33,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:26:32" (2/3) ... [2024-10-24 15:26:33,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563f9c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:26:33, skipping insertion in model container [2024-10-24 15:26:33,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:26:33" (3/3) ... [2024-10-24 15:26:33,470 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2024-10-24 15:26:33,484 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 15:26:33,484 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-24 15:26:33,484 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 15:26:33,539 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 15:26:33,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 150 transitions, 307 flow [2024-10-24 15:26:33,625 INFO L124 PetriNetUnfolderBase]: 19/209 cut-off events. [2024-10-24 15:26:33,625 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 15:26:33,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 209 events. 19/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 624 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2024-10-24 15:26:33,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 150 transitions, 307 flow [2024-10-24 15:26:33,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 150 transitions, 307 flow [2024-10-24 15:26:33,651 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:26:33,657 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;@586bd4cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:26:33,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-24 15:26:33,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:26:33,671 INFO L124 PetriNetUnfolderBase]: 2/56 cut-off events. [2024-10-24 15:26:33,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:26:33,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:33,673 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] [2024-10-24 15:26:33,674 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-24 15:26:33,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1835825106, now seen corresponding path program 1 times [2024-10-24 15:26:33,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:33,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019731616] [2024-10-24 15:26:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:33,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:33,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:33,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019731616] [2024-10-24 15:26:33,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019731616] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:33,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:33,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:26:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550856021] [2024-10-24 15:26:33,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:33,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:26:33,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:33,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:26:33,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:26:34,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 150 [2024-10-24 15:26:34,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 150 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2024-10-24 15:26:34,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:34,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 150 [2024-10-24 15:26:34,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:34,178 INFO L124 PetriNetUnfolderBase]: 48/534 cut-off events. [2024-10-24 15:26:34,178 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-24 15:26:34,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 534 events. 48/534 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2495 event pairs, 35 based on Foata normal form. 62/541 useless extension candidates. Maximal degree in co-relation 575. Up to 108 conditions per place. [2024-10-24 15:26:34,182 INFO L140 encePairwiseOnDemand]: 135/150 looper letters, 22 selfloop transitions, 2 changer transitions 0/142 dead transitions. [2024-10-24 15:26:34,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 142 transitions, 339 flow [2024-10-24 15:26:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:26:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:26:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2024-10-24 15:26:34,204 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8911111111111111 [2024-10-24 15:26:34,206 INFO L175 Difference]: Start difference. First operand has 140 places, 150 transitions, 307 flow. Second operand 3 states and 401 transitions. [2024-10-24 15:26:34,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 142 transitions, 339 flow [2024-10-24 15:26:34,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 142 transitions, 339 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:26:34,213 INFO L231 Difference]: Finished difference. Result has 141 places, 136 transitions, 287 flow [2024-10-24 15:26:34,215 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=141, PETRI_TRANSITIONS=136} [2024-10-24 15:26:34,219 INFO L277 CegarLoopForPetriNet]: 140 programPoint places, 1 predicate places. [2024-10-24 15:26:34,219 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 136 transitions, 287 flow [2024-10-24 15:26:34,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2024-10-24 15:26:34,220 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:34,221 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:26:34,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 15:26:34,221 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-24 15:26:34,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:34,222 INFO L85 PathProgramCache]: Analyzing trace with hash -817552428, now seen corresponding path program 1 times [2024-10-24 15:26:34,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:34,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510776785] [2024-10-24 15:26:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:34,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:34,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:34,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510776785] [2024-10-24 15:26:34,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510776785] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:34,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:34,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:26:34,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640160354] [2024-10-24 15:26:34,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:34,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:26:34,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:34,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:26:34,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:26:34,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 150 [2024-10-24 15:26:34,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 136 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 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) [2024-10-24 15:26:34,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:34,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 150 [2024-10-24 15:26:34,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:34,990 INFO L124 PetriNetUnfolderBase]: 108/673 cut-off events. [2024-10-24 15:26:34,991 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-24 15:26:34,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 673 events. 108/673 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3805 event pairs, 66 based on Foata normal form. 0/613 useless extension candidates. Maximal degree in co-relation 856. Up to 181 conditions per place. [2024-10-24 15:26:34,998 INFO L140 encePairwiseOnDemand]: 144/150 looper letters, 48 selfloop transitions, 5 changer transitions 0/159 dead transitions. [2024-10-24 15:26:34,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 159 transitions, 439 flow [2024-10-24 15:26:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:26:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:26:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 696 transitions. [2024-10-24 15:26:35,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7733333333333333 [2024-10-24 15:26:35,002 INFO L175 Difference]: Start difference. First operand has 141 places, 136 transitions, 287 flow. Second operand 6 states and 696 transitions. [2024-10-24 15:26:35,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 159 transitions, 439 flow [2024-10-24 15:26:35,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 159 transitions, 435 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:26:35,010 INFO L231 Difference]: Finished difference. Result has 143 places, 135 transitions, 291 flow [2024-10-24 15:26:35,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=143, PETRI_TRANSITIONS=135} [2024-10-24 15:26:35,011 INFO L277 CegarLoopForPetriNet]: 140 programPoint places, 3 predicate places. [2024-10-24 15:26:35,011 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 135 transitions, 291 flow [2024-10-24 15:26:35,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 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) [2024-10-24 15:26:35,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:35,012 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] [2024-10-24 15:26:35,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 15:26:35,013 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-24 15:26:35,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:35,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2011433969, now seen corresponding path program 1 times [2024-10-24 15:26:35,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:35,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579372124] [2024-10-24 15:26:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:35,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:35,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:35,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:35,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579372124] [2024-10-24 15:26:35,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579372124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:35,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:35,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:26:35,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78407082] [2024-10-24 15:26:35,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:35,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:26:35,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:35,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:26:35,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:26:35,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 150 [2024-10-24 15:26:35,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 135 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2024-10-24 15:26:35,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:35,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 150 [2024-10-24 15:26:35,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:35,220 INFO L124 PetriNetUnfolderBase]: 91/798 cut-off events. [2024-10-24 15:26:35,220 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 15:26:35,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 798 events. 91/798 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4696 event pairs, 30 based on Foata normal form. 0/729 useless extension candidates. Maximal degree in co-relation 962. Up to 125 conditions per place. [2024-10-24 15:26:35,226 INFO L140 encePairwiseOnDemand]: 141/150 looper letters, 30 selfloop transitions, 6 changer transitions 0/148 dead transitions. [2024-10-24 15:26:35,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 148 transitions, 392 flow [2024-10-24 15:26:35,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:26:35,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:26:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2024-10-24 15:26:35,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8466666666666667 [2024-10-24 15:26:35,229 INFO L175 Difference]: Start difference. First operand has 143 places, 135 transitions, 291 flow. Second operand 3 states and 381 transitions. [2024-10-24 15:26:35,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 148 transitions, 392 flow [2024-10-24 15:26:35,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 148 transitions, 382 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:26:35,231 INFO L231 Difference]: Finished difference. Result has 140 places, 137 transitions, 319 flow [2024-10-24 15:26:35,232 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=140, PETRI_TRANSITIONS=137} [2024-10-24 15:26:35,232 INFO L277 CegarLoopForPetriNet]: 140 programPoint places, 0 predicate places. [2024-10-24 15:26:35,233 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 137 transitions, 319 flow [2024-10-24 15:26:35,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2024-10-24 15:26:35,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:35,233 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] [2024-10-24 15:26:35,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 15:26:35,234 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-24 15:26:35,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1354095797, now seen corresponding path program 1 times [2024-10-24 15:26:35,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:35,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281751876] [2024-10-24 15:26:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:35,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:35,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:35,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281751876] [2024-10-24 15:26:35,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281751876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:35,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:35,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:26:35,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075147945] [2024-10-24 15:26:35,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:35,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:26:35,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:35,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:26:35,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:26:35,293 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 150 [2024-10-24 15:26:35,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 137 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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) [2024-10-24 15:26:35,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:35,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 150 [2024-10-24 15:26:35,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:35,384 INFO L124 PetriNetUnfolderBase]: 94/800 cut-off events. [2024-10-24 15:26:35,385 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-10-24 15:26:35,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 800 events. 94/800 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4789 event pairs, 60 based on Foata normal form. 0/731 useless extension candidates. Maximal degree in co-relation 1062. Up to 189 conditions per place. [2024-10-24 15:26:35,389 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 27 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2024-10-24 15:26:35,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 144 transitions, 399 flow [2024-10-24 15:26:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:26:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:26:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2024-10-24 15:26:35,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8377777777777777 [2024-10-24 15:26:35,390 INFO L175 Difference]: Start difference. First operand has 140 places, 137 transitions, 319 flow. Second operand 3 states and 377 transitions. [2024-10-24 15:26:35,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 144 transitions, 399 flow [2024-10-24 15:26:35,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 144 transitions, 385 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:26:35,397 INFO L231 Difference]: Finished difference. Result has 142 places, 140 transitions, 339 flow [2024-10-24 15:26:35,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=142, PETRI_TRANSITIONS=140} [2024-10-24 15:26:35,398 INFO L277 CegarLoopForPetriNet]: 140 programPoint places, 2 predicate places. [2024-10-24 15:26:35,398 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 140 transitions, 339 flow [2024-10-24 15:26:35,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 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) [2024-10-24 15:26:35,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:35,400 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:26:35,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 15:26:35,400 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-24 15:26:35,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1644884915, now seen corresponding path program 1 times [2024-10-24 15:26:35,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:35,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360397948] [2024-10-24 15:26:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:35,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:26:35,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:26:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:26:35,470 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:26:35,470 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:26:35,471 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-10-24 15:26:35,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-10-24 15:26:35,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-10-24 15:26:35,473 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-10-24 15:26:35,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-10-24 15:26:35,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-10-24 15:26:35,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-10-24 15:26:35,474 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-10-24 15:26:35,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-10-24 15:26:35,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-10-24 15:26:35,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-10-24 15:26:35,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-10-24 15:26:35,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 15:26:35,476 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-24 15:26:35,477 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:26:35,478 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 15:26:35,507 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 15:26:35,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 199 transitions, 414 flow [2024-10-24 15:26:35,551 INFO L124 PetriNetUnfolderBase]: 34/345 cut-off events. [2024-10-24 15:26:35,552 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 15:26:35,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 345 events. 34/345 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1163 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2024-10-24 15:26:35,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 199 transitions, 414 flow [2024-10-24 15:26:35,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 199 transitions, 414 flow [2024-10-24 15:26:35,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:26:35,563 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;@586bd4cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:26:35,564 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-10-24 15:26:35,568 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:26:35,568 INFO L124 PetriNetUnfolderBase]: 2/56 cut-off events. [2024-10-24 15:26:35,568 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:26:35,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:35,568 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] [2024-10-24 15:26:35,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:26:35,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1045185899, now seen corresponding path program 1 times [2024-10-24 15:26:35,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:35,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007755940] [2024-10-24 15:26:35,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:35,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:35,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:35,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007755940] [2024-10-24 15:26:35,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007755940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:35,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:35,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:26:35,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067194052] [2024-10-24 15:26:35,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:35,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:26:35,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:26:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:26:35,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 199 [2024-10-24 15:26:35,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 199 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2024-10-24 15:26:35,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:35,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 199 [2024-10-24 15:26:35,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:36,070 INFO L124 PetriNetUnfolderBase]: 788/4308 cut-off events. [2024-10-24 15:26:36,070 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-24 15:26:36,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5661 conditions, 4308 events. 788/4308 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 41171 event pairs, 348 based on Foata normal form. 749/4671 useless extension candidates. Maximal degree in co-relation 721. Up to 1303 conditions per place. [2024-10-24 15:26:36,095 INFO L140 encePairwiseOnDemand]: 178/199 looper letters, 31 selfloop transitions, 2 changer transitions 0/186 dead transitions. [2024-10-24 15:26:36,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 186 transitions, 454 flow [2024-10-24 15:26:36,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:26:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:26:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 521 transitions. [2024-10-24 15:26:36,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8726968174204355 [2024-10-24 15:26:36,097 INFO L175 Difference]: Start difference. First operand has 184 places, 199 transitions, 414 flow. Second operand 3 states and 521 transitions. [2024-10-24 15:26:36,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 186 transitions, 454 flow [2024-10-24 15:26:36,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 186 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:26:36,100 INFO L231 Difference]: Finished difference. Result has 185 places, 180 transitions, 386 flow [2024-10-24 15:26:36,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=185, PETRI_TRANSITIONS=180} [2024-10-24 15:26:36,101 INFO L277 CegarLoopForPetriNet]: 184 programPoint places, 1 predicate places. [2024-10-24 15:26:36,101 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 180 transitions, 386 flow [2024-10-24 15:26:36,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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) [2024-10-24 15:26:36,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:36,102 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] [2024-10-24 15:26:36,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 15:26:36,102 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:26:36,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1222479525, now seen corresponding path program 1 times [2024-10-24 15:26:36,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:36,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669748642] [2024-10-24 15:26:36,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:36,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:36,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:36,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669748642] [2024-10-24 15:26:36,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669748642] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:36,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:36,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:26:36,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209885405] [2024-10-24 15:26:36,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:36,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:26:36,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:36,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:26:36,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:26:36,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 199 [2024-10-24 15:26:36,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 180 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 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) [2024-10-24 15:26:36,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:36,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 199 [2024-10-24 15:26:36,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:37,147 INFO L124 PetriNetUnfolderBase]: 1718/6808 cut-off events. [2024-10-24 15:26:37,147 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-10-24 15:26:37,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9778 conditions, 6808 events. 1718/6808 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 68098 event pairs, 760 based on Foata normal form. 0/6127 useless extension candidates. Maximal degree in co-relation 8302. Up to 2015 conditions per place. [2024-10-24 15:26:37,186 INFO L140 encePairwiseOnDemand]: 193/199 looper letters, 80 selfloop transitions, 6 changer transitions 0/227 dead transitions. [2024-10-24 15:26:37,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 227 transitions, 652 flow [2024-10-24 15:26:37,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:26:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:26:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 938 transitions. [2024-10-24 15:26:37,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7855946398659966 [2024-10-24 15:26:37,189 INFO L175 Difference]: Start difference. First operand has 185 places, 180 transitions, 386 flow. Second operand 6 states and 938 transitions. [2024-10-24 15:26:37,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 227 transitions, 652 flow [2024-10-24 15:26:37,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 227 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:26:37,194 INFO L231 Difference]: Finished difference. Result has 188 places, 179 transitions, 394 flow [2024-10-24 15:26:37,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=188, PETRI_TRANSITIONS=179} [2024-10-24 15:26:37,196 INFO L277 CegarLoopForPetriNet]: 184 programPoint places, 4 predicate places. [2024-10-24 15:26:37,196 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 179 transitions, 394 flow [2024-10-24 15:26:37,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.5) internal successors, (861), 6 states have internal predecessors, (861), 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) [2024-10-24 15:26:37,197 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:37,197 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] [2024-10-24 15:26:37,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 15:26:37,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:26:37,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:37,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1173175104, now seen corresponding path program 1 times [2024-10-24 15:26:37,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:37,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245874707] [2024-10-24 15:26:37,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:37,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:37,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245874707] [2024-10-24 15:26:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245874707] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:37,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:37,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:26:37,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174487683] [2024-10-24 15:26:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:37,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:26:37,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:26:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:26:37,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 199 [2024-10-24 15:26:37,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 179 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2024-10-24 15:26:37,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:37,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 199 [2024-10-24 15:26:37,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:38,635 INFO L124 PetriNetUnfolderBase]: 3895/14518 cut-off events. [2024-10-24 15:26:38,636 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2024-10-24 15:26:38,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21076 conditions, 14518 events. 3895/14518 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 162453 event pairs, 1409 based on Foata normal form. 0/13033 useless extension candidates. Maximal degree in co-relation 14585. Up to 3516 conditions per place. [2024-10-24 15:26:38,698 INFO L140 encePairwiseOnDemand]: 180/199 looper letters, 58 selfloop transitions, 14 changer transitions 0/212 dead transitions. [2024-10-24 15:26:38,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 212 transitions, 615 flow [2024-10-24 15:26:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:26:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:26:38,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2024-10-24 15:26:38,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8375209380234506 [2024-10-24 15:26:38,701 INFO L175 Difference]: Start difference. First operand has 188 places, 179 transitions, 394 flow. Second operand 3 states and 500 transitions. [2024-10-24 15:26:38,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 212 transitions, 615 flow [2024-10-24 15:26:38,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 212 transitions, 603 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:26:38,705 INFO L231 Difference]: Finished difference. Result has 187 places, 193 transitions, 504 flow [2024-10-24 15:26:38,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=504, PETRI_PLACES=187, PETRI_TRANSITIONS=193} [2024-10-24 15:26:38,706 INFO L277 CegarLoopForPetriNet]: 184 programPoint places, 3 predicate places. [2024-10-24 15:26:38,707 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 193 transitions, 504 flow [2024-10-24 15:26:38,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2024-10-24 15:26:38,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:38,707 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] [2024-10-24 15:26:38,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 15:26:38,708 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:26:38,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:38,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1551430579, now seen corresponding path program 1 times [2024-10-24 15:26:38,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:38,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323780025] [2024-10-24 15:26:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:38,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:38,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:38,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323780025] [2024-10-24 15:26:38,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323780025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:38,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:38,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:26:38,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866503563] [2024-10-24 15:26:38,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:38,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:26:38,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:38,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:26:38,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:26:38,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 199 [2024-10-24 15:26:38,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 193 transitions, 504 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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) [2024-10-24 15:26:38,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:38,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 199 [2024-10-24 15:26:38,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:40,438 INFO L124 PetriNetUnfolderBase]: 4045/16487 cut-off events. [2024-10-24 15:26:40,439 INFO L125 PetriNetUnfolderBase]: For 4294/4458 co-relation queries the response was YES. [2024-10-24 15:26:40,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27242 conditions, 16487 events. 4045/16487 cut-off events. For 4294/4458 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 194586 event pairs, 2517 based on Foata normal form. 46/14989 useless extension candidates. Maximal degree in co-relation 25959. Up to 5540 conditions per place. [2024-10-24 15:26:40,532 INFO L140 encePairwiseOnDemand]: 190/199 looper letters, 52 selfloop transitions, 14 changer transitions 0/217 dead transitions. [2024-10-24 15:26:40,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 217 transitions, 722 flow [2024-10-24 15:26:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:26:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:26:40,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2024-10-24 15:26:40,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8274706867671692 [2024-10-24 15:26:40,533 INFO L175 Difference]: Start difference. First operand has 187 places, 193 transitions, 504 flow. Second operand 3 states and 494 transitions. [2024-10-24 15:26:40,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 217 transitions, 722 flow [2024-10-24 15:26:40,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 217 transitions, 684 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:26:40,547 INFO L231 Difference]: Finished difference. Result has 189 places, 205 transitions, 602 flow [2024-10-24 15:26:40,547 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=189, PETRI_TRANSITIONS=205} [2024-10-24 15:26:40,549 INFO L277 CegarLoopForPetriNet]: 184 programPoint places, 5 predicate places. [2024-10-24 15:26:40,549 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 205 transitions, 602 flow [2024-10-24 15:26:40,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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) [2024-10-24 15:26:40,550 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:40,550 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:26:40,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 15:26:40,550 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:26:40,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:40,551 INFO L85 PathProgramCache]: Analyzing trace with hash 224192502, now seen corresponding path program 1 times [2024-10-24 15:26:40,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:40,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867502293] [2024-10-24 15:26:40,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:40,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:40,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:40,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867502293] [2024-10-24 15:26:40,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867502293] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:26:40,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751362873] [2024-10-24 15:26:40,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:40,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:26:40,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:26:40,626 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) [2024-10-24 15:26:40,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 15:26:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:40,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 15:26:40,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:26:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:40,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 15:26:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:40,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751362873] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 15:26:40,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 15:26:40,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-24 15:26:40,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853435401] [2024-10-24 15:26:40,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 15:26:40,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 15:26:40,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:40,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 15:26:40,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 15:26:40,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 199 [2024-10-24 15:26:40,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 205 transitions, 602 flow. Second operand has 10 states, 10 states have (on average 153.5) internal successors, (1535), 10 states have internal predecessors, (1535), 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) [2024-10-24 15:26:40,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:40,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 199 [2024-10-24 15:26:40,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:41,324 INFO L124 PetriNetUnfolderBase]: 768/3587 cut-off events. [2024-10-24 15:26:41,324 INFO L125 PetriNetUnfolderBase]: For 429/463 co-relation queries the response was YES. [2024-10-24 15:26:41,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5571 conditions, 3587 events. 768/3587 cut-off events. For 429/463 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 32414 event pairs, 77 based on Foata normal form. 108/3453 useless extension candidates. Maximal degree in co-relation 2632. Up to 478 conditions per place. [2024-10-24 15:26:41,341 INFO L140 encePairwiseOnDemand]: 194/199 looper letters, 72 selfloop transitions, 7 changer transitions 0/212 dead transitions. [2024-10-24 15:26:41,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 212 transitions, 728 flow [2024-10-24 15:26:41,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 15:26:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 15:26:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1440 transitions. [2024-10-24 15:26:41,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8040201005025126 [2024-10-24 15:26:41,344 INFO L175 Difference]: Start difference. First operand has 189 places, 205 transitions, 602 flow. Second operand 9 states and 1440 transitions. [2024-10-24 15:26:41,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 212 transitions, 728 flow [2024-10-24 15:26:41,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 212 transitions, 708 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:26:41,348 INFO L231 Difference]: Finished difference. Result has 152 places, 156 transitions, 452 flow [2024-10-24 15:26:41,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=452, PETRI_PLACES=152, PETRI_TRANSITIONS=156} [2024-10-24 15:26:41,349 INFO L277 CegarLoopForPetriNet]: 184 programPoint places, -32 predicate places. [2024-10-24 15:26:41,350 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 156 transitions, 452 flow [2024-10-24 15:26:41,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 153.5) internal successors, (1535), 10 states have internal predecessors, (1535), 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) [2024-10-24 15:26:41,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:41,351 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:26:41,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 15:26:41,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-10-24 15:26:41,552 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:26:41,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:41,553 INFO L85 PathProgramCache]: Analyzing trace with hash 267176223, now seen corresponding path program 1 times [2024-10-24 15:26:41,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:41,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786306669] [2024-10-24 15:26:41,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:41,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 15:26:41,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:41,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786306669] [2024-10-24 15:26:41,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786306669] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:41,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:41,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:26:41,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279910504] [2024-10-24 15:26:41,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:41,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:26:41,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:41,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:26:41,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:26:41,622 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 199 [2024-10-24 15:26:41,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 156 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2024-10-24 15:26:41,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:41,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 199 [2024-10-24 15:26:41,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:41,756 INFO L124 PetriNetUnfolderBase]: 260/1297 cut-off events. [2024-10-24 15:26:41,756 INFO L125 PetriNetUnfolderBase]: For 459/480 co-relation queries the response was YES. [2024-10-24 15:26:41,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 1297 events. 260/1297 cut-off events. For 459/480 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 8716 event pairs, 132 based on Foata normal form. 7/1212 useless extension candidates. Maximal degree in co-relation 2262. Up to 459 conditions per place. [2024-10-24 15:26:41,765 INFO L140 encePairwiseOnDemand]: 191/199 looper letters, 42 selfloop transitions, 12 changer transitions 0/170 dead transitions. [2024-10-24 15:26:41,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 170 transitions, 604 flow [2024-10-24 15:26:41,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:26:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:26:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2024-10-24 15:26:41,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8040201005025126 [2024-10-24 15:26:41,769 INFO L175 Difference]: Start difference. First operand has 152 places, 156 transitions, 452 flow. Second operand 3 states and 480 transitions. [2024-10-24 15:26:41,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 170 transitions, 604 flow [2024-10-24 15:26:41,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 170 transitions, 589 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-24 15:26:41,772 INFO L231 Difference]: Finished difference. Result has 151 places, 164 transitions, 535 flow [2024-10-24 15:26:41,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=151, PETRI_TRANSITIONS=164} [2024-10-24 15:26:41,773 INFO L277 CegarLoopForPetriNet]: 184 programPoint places, -33 predicate places. [2024-10-24 15:26:41,773 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 164 transitions, 535 flow [2024-10-24 15:26:41,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2024-10-24 15:26:41,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:41,774 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:26:41,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 15:26:41,774 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:26:41,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1563558491, now seen corresponding path program 1 times [2024-10-24 15:26:41,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:41,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703615044] [2024-10-24 15:26:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:41,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:41,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:41,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703615044] [2024-10-24 15:26:41,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703615044] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:41,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:41,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:26:41,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591517388] [2024-10-24 15:26:41,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:41,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:26:41,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:41,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:26:41,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:26:41,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 199 [2024-10-24 15:26:41,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 164 transitions, 535 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2024-10-24 15:26:41,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:41,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 199 [2024-10-24 15:26:41,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:42,029 INFO L124 PetriNetUnfolderBase]: 291/1369 cut-off events. [2024-10-24 15:26:42,029 INFO L125 PetriNetUnfolderBase]: For 1139/1174 co-relation queries the response was YES. [2024-10-24 15:26:42,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2796 conditions, 1369 events. 291/1369 cut-off events. For 1139/1174 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9339 event pairs, 134 based on Foata normal form. 9/1302 useless extension candidates. Maximal degree in co-relation 2719. Up to 501 conditions per place. [2024-10-24 15:26:42,037 INFO L140 encePairwiseOnDemand]: 191/199 looper letters, 49 selfloop transitions, 12 changer transitions 0/179 dead transitions. [2024-10-24 15:26:42,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 179 transitions, 724 flow [2024-10-24 15:26:42,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:26:42,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:26:42,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2024-10-24 15:26:42,043 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8056951423785594 [2024-10-24 15:26:42,043 INFO L175 Difference]: Start difference. First operand has 151 places, 164 transitions, 535 flow. Second operand 3 states and 481 transitions. [2024-10-24 15:26:42,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 179 transitions, 724 flow [2024-10-24 15:26:42,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 179 transitions, 696 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:26:42,048 INFO L231 Difference]: Finished difference. Result has 153 places, 172 transitions, 621 flow [2024-10-24 15:26:42,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=621, PETRI_PLACES=153, PETRI_TRANSITIONS=172} [2024-10-24 15:26:42,049 INFO L277 CegarLoopForPetriNet]: 184 programPoint places, -31 predicate places. [2024-10-24 15:26:42,049 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 172 transitions, 621 flow [2024-10-24 15:26:42,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2024-10-24 15:26:42,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:42,050 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:26:42,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 15:26:42,050 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:26:42,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:42,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1523106958, now seen corresponding path program 1 times [2024-10-24 15:26:42,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:42,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279986718] [2024-10-24 15:26:42,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:42,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:26:42,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:26:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:26:42,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:26:42,109 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:26:42,109 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-10-24 15:26:42,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-10-24 15:26:42,109 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-10-24 15:26:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-10-24 15:26:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-10-24 15:26:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-10-24 15:26:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-10-24 15:26:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-10-24 15:26:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-10-24 15:26:42,110 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-10-24 15:26:42,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-10-24 15:26:42,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-10-24 15:26:42,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-10-24 15:26:42,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-10-24 15:26:42,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-10-24 15:26:42,111 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-10-24 15:26:42,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 15:26:42,112 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:26:42,113 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:26:42,113 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 15:26:42,142 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 15:26:42,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 248 transitions, 523 flow [2024-10-24 15:26:42,201 INFO L124 PetriNetUnfolderBase]: 54/526 cut-off events. [2024-10-24 15:26:42,201 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 15:26:42,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 526 events. 54/526 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1977 event pairs, 1 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 353. Up to 16 conditions per place. [2024-10-24 15:26:42,206 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 248 transitions, 523 flow [2024-10-24 15:26:42,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 248 transitions, 523 flow [2024-10-24 15:26:42,213 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:26:42,214 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;@586bd4cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:26:42,214 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-24 15:26:42,218 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:26:42,218 INFO L124 PetriNetUnfolderBase]: 2/56 cut-off events. [2024-10-24 15:26:42,218 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:26:42,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:42,219 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] [2024-10-24 15:26:42,219 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:26:42,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:42,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1364594829, now seen corresponding path program 1 times [2024-10-24 15:26:42,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:42,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298517960] [2024-10-24 15:26:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:42,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:42,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:42,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298517960] [2024-10-24 15:26:42,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298517960] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:42,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:42,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:26:42,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574475514] [2024-10-24 15:26:42,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:42,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:26:42,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:42,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:26:42,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:26:42,276 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 248 [2024-10-24 15:26:42,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 248 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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) [2024-10-24 15:26:42,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:42,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 248 [2024-10-24 15:26:42,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:46,534 INFO L124 PetriNetUnfolderBase]: 8948/35448 cut-off events. [2024-10-24 15:26:46,535 INFO L125 PetriNetUnfolderBase]: For 937/937 co-relation queries the response was YES. [2024-10-24 15:26:46,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48686 conditions, 35448 events. 8948/35448 cut-off events. For 937/937 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 459062 event pairs, 8324 based on Foata normal form. 7648/39701 useless extension candidates. Maximal degree in co-relation 35558. Up to 12802 conditions per place. [2024-10-24 15:26:46,797 INFO L140 encePairwiseOnDemand]: 221/248 looper letters, 39 selfloop transitions, 2 changer transitions 0/229 dead transitions. [2024-10-24 15:26:46,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 229 transitions, 567 flow [2024-10-24 15:26:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:26:46,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:26:46,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2024-10-24 15:26:46,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8602150537634409 [2024-10-24 15:26:46,800 INFO L175 Difference]: Start difference. First operand has 228 places, 248 transitions, 523 flow. Second operand 3 states and 640 transitions. [2024-10-24 15:26:46,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 229 transitions, 567 flow [2024-10-24 15:26:46,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 229 transitions, 567 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:26:46,805 INFO L231 Difference]: Finished difference. Result has 229 places, 223 transitions, 483 flow [2024-10-24 15:26:46,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=229, PETRI_TRANSITIONS=223} [2024-10-24 15:26:46,807 INFO L277 CegarLoopForPetriNet]: 228 programPoint places, 1 predicate places. [2024-10-24 15:26:46,808 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 223 transitions, 483 flow [2024-10-24 15:26:46,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 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) [2024-10-24 15:26:46,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:46,808 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] [2024-10-24 15:26:46,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 15:26:46,808 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:26:46,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:46,809 INFO L85 PathProgramCache]: Analyzing trace with hash -410564525, now seen corresponding path program 1 times [2024-10-24 15:26:46,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:46,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095305345] [2024-10-24 15:26:46,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:46,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:47,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:47,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095305345] [2024-10-24 15:26:47,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095305345] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:47,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:47,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:26:47,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044698449] [2024-10-24 15:26:47,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:47,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:26:47,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:47,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:26:47,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:26:47,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 248 [2024-10-24 15:26:47,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 223 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 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) [2024-10-24 15:26:47,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:47,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 248 [2024-10-24 15:26:47,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:26:54,502 INFO L124 PetriNetUnfolderBase]: 19590/65774 cut-off events. [2024-10-24 15:26:54,502 INFO L125 PetriNetUnfolderBase]: For 1507/1507 co-relation queries the response was YES. [2024-10-24 15:26:54,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94699 conditions, 65774 events. 19590/65774 cut-off events. For 1507/1507 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 891023 event pairs, 7382 based on Foata normal form. 0/60119 useless extension candidates. Maximal degree in co-relation 89186. Up to 20118 conditions per place. [2024-10-24 15:26:55,050 INFO L140 encePairwiseOnDemand]: 242/248 looper letters, 112 selfloop transitions, 6 changer transitions 0/294 dead transitions. [2024-10-24 15:26:55,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 294 transitions, 861 flow [2024-10-24 15:26:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:26:55,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:26:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1180 transitions. [2024-10-24 15:26:55,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.793010752688172 [2024-10-24 15:26:55,053 INFO L175 Difference]: Start difference. First operand has 229 places, 223 transitions, 483 flow. Second operand 6 states and 1180 transitions. [2024-10-24 15:26:55,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 294 transitions, 861 flow [2024-10-24 15:26:55,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 294 transitions, 859 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:26:55,060 INFO L231 Difference]: Finished difference. Result has 232 places, 222 transitions, 491 flow [2024-10-24 15:26:55,061 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=491, PETRI_PLACES=232, PETRI_TRANSITIONS=222} [2024-10-24 15:26:55,061 INFO L277 CegarLoopForPetriNet]: 228 programPoint places, 4 predicate places. [2024-10-24 15:26:55,061 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 222 transitions, 491 flow [2024-10-24 15:26:55,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 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) [2024-10-24 15:26:55,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:26:55,062 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] [2024-10-24 15:26:55,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 15:26:55,062 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:26:55,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:26:55,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1848818159, now seen corresponding path program 1 times [2024-10-24 15:26:55,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:26:55,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184574951] [2024-10-24 15:26:55,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:26:55,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:26:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:26:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:26:55,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:26:55,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184574951] [2024-10-24 15:26:55,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184574951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:26:55,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:26:55,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 15:26:55,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470811679] [2024-10-24 15:26:55,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:26:55,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:26:55,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:26:55,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:26:55,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:26:55,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 248 [2024-10-24 15:26:55,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 222 transitions, 491 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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) [2024-10-24 15:26:55,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:26:55,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 248 [2024-10-24 15:26:55,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand