./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_41-trylock_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:08:53,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:08:53,384 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-14 17:08:53,390 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:08:53,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:08:53,430 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:08:53,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:08:53,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:08:53,433 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:08:53,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:08:53,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:08:53,437 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:08:53,437 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:08:53,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:08:53,438 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 17:08:53,438 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:08:53,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:08:53,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:08:53,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:08:53,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 17:08:53,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:08:53,441 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 17:08:53,442 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-14 17:08:53,442 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:08:53,442 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:08:53,442 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:08:53,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 17:08:53,443 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:08:53,443 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:08:53,444 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:08:53,444 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:08:53,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:08:53,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:08:53,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:08:53,446 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 17:08:53,446 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:08:53,446 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:08:53,446 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:08:53,446 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:08:53,447 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:08:53,447 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:08:53,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2024-10-14 17:08:53,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:08:53,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:08:53,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:08:53,749 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:08:53,750 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:08:53,752 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2024-10-14 17:08:55,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:08:55,539 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:08:55,540 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2024-10-14 17:08:55,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68900691a/c985d966d40e4880bf877b1493eb0ee4/FLAGbbfdc2844 [2024-10-14 17:08:55,579 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68900691a/c985d966d40e4880bf877b1493eb0ee4 [2024-10-14 17:08:55,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:08:55,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:08:55,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:08:55,587 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:08:55,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:08:55,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:08:55" (1/1) ... [2024-10-14 17:08:55,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37279237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:55, skipping insertion in model container [2024-10-14 17:08:55,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:08:55" (1/1) ... [2024-10-14 17:08:55,645 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:08:56,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:08:56,045 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:08:56,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:08:56,167 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:08:56,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56 WrapperNode [2024-10-14 17:08:56,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:08:56,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:08:56,170 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:08:56,170 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:08:56,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (1/1) ... [2024-10-14 17:08:56,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (1/1) ... [2024-10-14 17:08:56,232 INFO L138 Inliner]: procedures = 172, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2024-10-14 17:08:56,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:08:56,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:08:56,235 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:08:56,235 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:08:56,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (1/1) ... [2024-10-14 17:08:56,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (1/1) ... [2024-10-14 17:08:56,253 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (1/1) ... [2024-10-14 17:08:56,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (1/1) ... [2024-10-14 17:08:56,260 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (1/1) ... [2024-10-14 17:08:56,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (1/1) ... [2024-10-14 17:08:56,267 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (1/1) ... [2024-10-14 17:08:56,269 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (1/1) ... [2024-10-14 17:08:56,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:08:56,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:08:56,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:08:56,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:08:56,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (1/1) ... [2024-10-14 17:08:56,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:08:56,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:08:56,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 17:08:56,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 17:08:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-14 17:08:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-14 17:08:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-14 17:08:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:08:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 17:08:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-14 17:08:56,377 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-14 17:08:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 17:08:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-10-14 17:08:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-14 17:08:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-14 17:08:56,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:08:56,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:08:56,379 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 17:08:56,514 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:08:56,517 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:08:56,804 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 17:08:56,804 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:08:56,841 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:08:56,841 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-14 17:08:56,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:08:56 BoogieIcfgContainer [2024-10-14 17:08:56,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:08:56,847 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:08:56,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:08:56,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:08:56,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:08:55" (1/3) ... [2024-10-14 17:08:56,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ef6e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:08:56, skipping insertion in model container [2024-10-14 17:08:56,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:08:56" (2/3) ... [2024-10-14 17:08:56,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ef6e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:08:56, skipping insertion in model container [2024-10-14 17:08:56,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:08:56" (3/3) ... [2024-10-14 17:08:56,855 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2024-10-14 17:08:56,872 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:08:56,872 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-14 17:08:56,873 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 17:08:56,943 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-14 17:08:56,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 144 transitions, 295 flow [2024-10-14 17:08:57,068 INFO L124 PetriNetUnfolderBase]: 23/207 cut-off events. [2024-10-14 17:08:57,068 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 17:08:57,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 207 events. 23/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 659 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 113. Up to 6 conditions per place. [2024-10-14 17:08:57,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 144 transitions, 295 flow [2024-10-14 17:08:57,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 144 transitions, 295 flow [2024-10-14 17:08:57,092 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:08:57,099 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;@7949dd4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:08:57,099 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-10-14 17:08:57,110 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:08:57,111 INFO L124 PetriNetUnfolderBase]: 4/49 cut-off events. [2024-10-14 17:08:57,111 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:08:57,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:57,112 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] [2024-10-14 17:08:57,112 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 17:08:57,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:57,118 INFO L85 PathProgramCache]: Analyzing trace with hash -339722752, now seen corresponding path program 1 times [2024-10-14 17:08:57,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:57,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131780443] [2024-10-14 17:08:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:57,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:08:57,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:57,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131780443] [2024-10-14 17:08:57,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131780443] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:57,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:57,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:08:57,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601911691] [2024-10-14 17:08:57,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:57,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 17:08:57,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:57,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 17:08:57,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 17:08:57,442 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 144 [2024-10-14 17:08:57,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 144 transitions, 295 flow. Second operand has 2 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:08:57,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:57,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 144 [2024-10-14 17:08:57,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:57,588 INFO L124 PetriNetUnfolderBase]: 27/367 cut-off events. [2024-10-14 17:08:57,588 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 17:08:57,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 367 events. 27/367 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1446 event pairs, 24 based on Foata normal form. 54/383 useless extension candidates. Maximal degree in co-relation 340. Up to 65 conditions per place. [2024-10-14 17:08:57,593 INFO L140 encePairwiseOnDemand]: 131/144 looper letters, 12 selfloop transitions, 0 changer transitions 0/129 dead transitions. [2024-10-14 17:08:57,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 129 transitions, 289 flow [2024-10-14 17:08:57,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 17:08:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 17:08:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 261 transitions. [2024-10-14 17:08:57,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.90625 [2024-10-14 17:08:57,612 INFO L175 Difference]: Start difference. First operand has 132 places, 144 transitions, 295 flow. Second operand 2 states and 261 transitions. [2024-10-14 17:08:57,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 129 transitions, 289 flow [2024-10-14 17:08:57,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 129 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:08:57,620 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 265 flow [2024-10-14 17:08:57,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=265, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2024-10-14 17:08:57,628 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, -1 predicate places. [2024-10-14 17:08:57,629 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 265 flow [2024-10-14 17:08:57,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:08:57,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:57,630 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] [2024-10-14 17:08:57,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:08:57,630 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 17:08:57,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:57,631 INFO L85 PathProgramCache]: Analyzing trace with hash -104795701, now seen corresponding path program 1 times [2024-10-14 17:08:57,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:57,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199093903] [2024-10-14 17:08:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:57,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:08:57,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:57,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199093903] [2024-10-14 17:08:57,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199093903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:57,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:57,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:08:57,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503512116] [2024-10-14 17:08:57,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:57,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:57,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:57,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:57,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:57,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 144 [2024-10-14 17:08:57,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:08:57,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:57,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 144 [2024-10-14 17:08:57,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:57,962 INFO L124 PetriNetUnfolderBase]: 55/546 cut-off events. [2024-10-14 17:08:57,962 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 17:08:57,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 546 events. 55/546 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2704 event pairs, 0 based on Foata normal form. 1/490 useless extension candidates. Maximal degree in co-relation 664. Up to 108 conditions per place. [2024-10-14 17:08:57,970 INFO L140 encePairwiseOnDemand]: 141/144 looper letters, 22 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2024-10-14 17:08:57,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 135 transitions, 325 flow [2024-10-14 17:08:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:57,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2024-10-14 17:08:57,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8356481481481481 [2024-10-14 17:08:57,975 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 265 flow. Second operand 3 states and 361 transitions. [2024-10-14 17:08:57,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 135 transitions, 325 flow [2024-10-14 17:08:57,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 135 transitions, 325 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:08:57,980 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 273 flow [2024-10-14 17:08:57,981 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2024-10-14 17:08:57,982 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 2 predicate places. [2024-10-14 17:08:57,982 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 273 flow [2024-10-14 17:08:57,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:08:57,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:57,983 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] [2024-10-14 17:08:57,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 17:08:57,984 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 17:08:57,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:57,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1760864711, now seen corresponding path program 1 times [2024-10-14 17:08:57,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:57,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837110270] [2024-10-14 17:08:57,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:57,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:08:58,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:58,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837110270] [2024-10-14 17:08:58,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837110270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:58,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:58,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:08:58,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024640272] [2024-10-14 17:08:58,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:58,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:08:58,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:58,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:08:58,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:08:58,655 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 144 [2024-10-14 17:08:58,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:08:58,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:58,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 144 [2024-10-14 17:08:58,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:58,867 INFO L124 PetriNetUnfolderBase]: 115/660 cut-off events. [2024-10-14 17:08:58,868 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-14 17:08:58,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 660 events. 115/660 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3757 event pairs, 12 based on Foata normal form. 0/603 useless extension candidates. Maximal degree in co-relation 942. Up to 181 conditions per place. [2024-10-14 17:08:58,874 INFO L140 encePairwiseOnDemand]: 138/144 looper letters, 48 selfloop transitions, 5 changer transitions 0/152 dead transitions. [2024-10-14 17:08:58,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 152 transitions, 425 flow [2024-10-14 17:08:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:08:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:08:58,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 654 transitions. [2024-10-14 17:08:58,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7569444444444444 [2024-10-14 17:08:58,879 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 273 flow. Second operand 6 states and 654 transitions. [2024-10-14 17:08:58,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 152 transitions, 425 flow [2024-10-14 17:08:58,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 152 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:08:58,887 INFO L231 Difference]: Finished difference. Result has 136 places, 128 transitions, 277 flow [2024-10-14 17:08:58,888 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=136, PETRI_TRANSITIONS=128} [2024-10-14 17:08:58,889 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 4 predicate places. [2024-10-14 17:08:58,890 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 128 transitions, 277 flow [2024-10-14 17:08:58,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:08:58,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:58,891 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:08:58,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 17:08:58,891 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 17:08:58,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:58,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1856796326, now seen corresponding path program 1 times [2024-10-14 17:08:58,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:58,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310202376] [2024-10-14 17:08:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:08:58,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:58,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310202376] [2024-10-14 17:08:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310202376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:58,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:08:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329542250] [2024-10-14 17:08:58,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:58,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:58,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:58,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:58,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:58,999 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 144 [2024-10-14 17:08:58,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 128 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:08:59,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:59,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 144 [2024-10-14 17:08:59,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:59,138 INFO L124 PetriNetUnfolderBase]: 92/791 cut-off events. [2024-10-14 17:08:59,139 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 17:08:59,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 791 events. 92/791 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4695 event pairs, 30 based on Foata normal form. 0/721 useless extension candidates. Maximal degree in co-relation 1022. Up to 125 conditions per place. [2024-10-14 17:08:59,144 INFO L140 encePairwiseOnDemand]: 135/144 looper letters, 30 selfloop transitions, 6 changer transitions 0/141 dead transitions. [2024-10-14 17:08:59,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 141 transitions, 378 flow [2024-10-14 17:08:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:59,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2024-10-14 17:08:59,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2024-10-14 17:08:59,147 INFO L175 Difference]: Start difference. First operand has 136 places, 128 transitions, 277 flow. Second operand 3 states and 360 transitions. [2024-10-14 17:08:59,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 141 transitions, 378 flow [2024-10-14 17:08:59,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 141 transitions, 368 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 17:08:59,153 INFO L231 Difference]: Finished difference. Result has 133 places, 130 transitions, 305 flow [2024-10-14 17:08:59,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=133, PETRI_TRANSITIONS=130} [2024-10-14 17:08:59,155 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 1 predicate places. [2024-10-14 17:08:59,156 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 130 transitions, 305 flow [2024-10-14 17:08:59,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:08:59,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:59,157 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] [2024-10-14 17:08:59,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 17:08:59,158 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 17:08:59,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash -983623192, now seen corresponding path program 1 times [2024-10-14 17:08:59,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:59,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405066276] [2024-10-14 17:08:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:59,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:59,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:08:59,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:59,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405066276] [2024-10-14 17:08:59,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405066276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:59,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:59,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:08:59,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270543167] [2024-10-14 17:08:59,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:59,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:08:59,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:59,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:08:59,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:08:59,232 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 144 [2024-10-14 17:08:59,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 130 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:08:59,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:59,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 144 [2024-10-14 17:08:59,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:59,358 INFO L124 PetriNetUnfolderBase]: 95/793 cut-off events. [2024-10-14 17:08:59,358 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-10-14 17:08:59,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 793 events. 95/793 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4750 event pairs, 60 based on Foata normal form. 0/723 useless extension candidates. Maximal degree in co-relation 1121. Up to 189 conditions per place. [2024-10-14 17:08:59,363 INFO L140 encePairwiseOnDemand]: 139/144 looper letters, 27 selfloop transitions, 4 changer transitions 0/137 dead transitions. [2024-10-14 17:08:59,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 137 transitions, 385 flow [2024-10-14 17:08:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:08:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:08:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2024-10-14 17:08:59,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8240740740740741 [2024-10-14 17:08:59,365 INFO L175 Difference]: Start difference. First operand has 133 places, 130 transitions, 305 flow. Second operand 3 states and 356 transitions. [2024-10-14 17:08:59,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 137 transitions, 385 flow [2024-10-14 17:08:59,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 137 transitions, 371 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:08:59,370 INFO L231 Difference]: Finished difference. Result has 135 places, 133 transitions, 325 flow [2024-10-14 17:08:59,370 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=325, PETRI_PLACES=135, PETRI_TRANSITIONS=133} [2024-10-14 17:08:59,371 INFO L277 CegarLoopForPetriNet]: 132 programPoint places, 3 predicate places. [2024-10-14 17:08:59,371 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 325 flow [2024-10-14 17:08:59,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:08:59,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:59,373 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] [2024-10-14 17:08:59,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 17:08:59,374 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-14 17:08:59,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:59,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1999974289, now seen corresponding path program 1 times [2024-10-14 17:08:59,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:59,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566128631] [2024-10-14 17:08:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:08:59,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:08:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:08:59,458 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:08:59,459 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:08:59,460 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-10-14 17:08:59,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-10-14 17:08:59,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-10-14 17:08:59,462 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-10-14 17:08:59,464 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-10-14 17:08:59,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-10-14 17:08:59,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-10-14 17:08:59,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-10-14 17:08:59,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-10-14 17:08:59,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-10-14 17:08:59,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-10-14 17:08:59,465 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-10-14 17:08:59,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 17:08:59,466 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-14 17:08:59,470 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 17:08:59,470 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 17:08:59,509 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 17:08:59,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 193 transitions, 402 flow [2024-10-14 17:08:59,561 INFO L124 PetriNetUnfolderBase]: 40/347 cut-off events. [2024-10-14 17:08:59,561 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 17:08:59,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 347 events. 40/347 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1223 event pairs, 0 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2024-10-14 17:08:59,565 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 193 transitions, 402 flow [2024-10-14 17:08:59,570 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 193 transitions, 402 flow [2024-10-14 17:08:59,571 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:08:59,572 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;@7949dd4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:08:59,574 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-10-14 17:08:59,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:08:59,578 INFO L124 PetriNetUnfolderBase]: 4/49 cut-off events. [2024-10-14 17:08:59,578 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:08:59,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:08:59,579 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] [2024-10-14 17:08:59,579 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:08:59,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:08:59,579 INFO L85 PathProgramCache]: Analyzing trace with hash -930480128, now seen corresponding path program 1 times [2024-10-14 17:08:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:08:59,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161051903] [2024-10-14 17:08:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:08:59,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:08:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:08:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:08:59,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:08:59,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161051903] [2024-10-14 17:08:59,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161051903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:08:59,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:08:59,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:08:59,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409528973] [2024-10-14 17:08:59,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:08:59,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 17:08:59,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:08:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 17:08:59,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 17:08:59,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 193 [2024-10-14 17:08:59,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 193 transitions, 402 flow. Second operand has 2 states, 2 states have (on average 154.0) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:08:59,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:08:59,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 193 [2024-10-14 17:08:59,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:08:59,968 INFO L124 PetriNetUnfolderBase]: 421/2602 cut-off events. [2024-10-14 17:08:59,969 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-10-14 17:08:59,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3361 conditions, 2602 events. 421/2602 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 21186 event pairs, 414 based on Foata normal form. 577/2911 useless extension candidates. Maximal degree in co-relation 2797. Up to 716 conditions per place. [2024-10-14 17:08:59,995 INFO L140 encePairwiseOnDemand]: 174/193 looper letters, 20 selfloop transitions, 0 changer transitions 0/172 dead transitions. [2024-10-14 17:08:59,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 172 transitions, 400 flow [2024-10-14 17:08:59,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 17:08:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 17:08:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 345 transitions. [2024-10-14 17:08:59,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8937823834196891 [2024-10-14 17:08:59,997 INFO L175 Difference]: Start difference. First operand has 176 places, 193 transitions, 402 flow. Second operand 2 states and 345 transitions. [2024-10-14 17:08:59,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 172 transitions, 400 flow [2024-10-14 17:09:00,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 172 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:00,003 INFO L231 Difference]: Finished difference. Result has 175 places, 172 transitions, 360 flow [2024-10-14 17:09:00,004 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=360, PETRI_PLACES=175, PETRI_TRANSITIONS=172} [2024-10-14 17:09:00,004 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, -1 predicate places. [2024-10-14 17:09:00,005 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 172 transitions, 360 flow [2024-10-14 17:09:00,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 154.0) internal successors, (308), 2 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:00,005 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:00,005 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] [2024-10-14 17:09:00,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 17:09:00,006 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:09:00,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:00,006 INFO L85 PathProgramCache]: Analyzing trace with hash -886944789, now seen corresponding path program 1 times [2024-10-14 17:09:00,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:00,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048524702] [2024-10-14 17:09:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:00,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:00,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:00,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048524702] [2024-10-14 17:09:00,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048524702] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:00,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:00,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:09:00,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976342603] [2024-10-14 17:09:00,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:00,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:00,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:00,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 193 [2024-10-14 17:09:00,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:00,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:00,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 193 [2024-10-14 17:09:00,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:00,669 INFO L124 PetriNetUnfolderBase]: 802/4340 cut-off events. [2024-10-14 17:09:00,669 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2024-10-14 17:09:00,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5694 conditions, 4340 events. 802/4340 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 41568 event pairs, 348 based on Foata normal form. 1/3941 useless extension candidates. Maximal degree in co-relation 5689. Up to 1303 conditions per place. [2024-10-14 17:09:00,700 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 31 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2024-10-14 17:09:00,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 179 transitions, 440 flow [2024-10-14 17:09:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2024-10-14 17:09:00,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8203799654576857 [2024-10-14 17:09:00,703 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 360 flow. Second operand 3 states and 475 transitions. [2024-10-14 17:09:00,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 179 transitions, 440 flow [2024-10-14 17:09:00,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 179 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:00,709 INFO L231 Difference]: Finished difference. Result has 178 places, 173 transitions, 372 flow [2024-10-14 17:09:00,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=178, PETRI_TRANSITIONS=173} [2024-10-14 17:09:00,712 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2024-10-14 17:09:00,712 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 173 transitions, 372 flow [2024-10-14 17:09:00,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:00,713 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:00,713 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] [2024-10-14 17:09:00,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 17:09:00,714 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:09:00,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1010920344, now seen corresponding path program 1 times [2024-10-14 17:09:00,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:00,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514460039] [2024-10-14 17:09:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:00,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:01,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:01,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514460039] [2024-10-14 17:09:01,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514460039] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:01,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:01,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:09:01,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407886697] [2024-10-14 17:09:01,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:01,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:09:01,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:01,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:09:01,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:09:01,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 193 [2024-10-14 17:09:01,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 173 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:01,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:01,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 193 [2024-10-14 17:09:01,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:02,132 INFO L124 PetriNetUnfolderBase]: 1739/6865 cut-off events. [2024-10-14 17:09:02,133 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2024-10-14 17:09:02,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9836 conditions, 6865 events. 1739/6865 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 68791 event pairs, 760 based on Foata normal form. 0/6164 useless extension candidates. Maximal degree in co-relation 9829. Up to 2015 conditions per place. [2024-10-14 17:09:02,181 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 80 selfloop transitions, 6 changer transitions 0/220 dead transitions. [2024-10-14 17:09:02,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 220 transitions, 638 flow [2024-10-14 17:09:02,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:09:02,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:09:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 896 transitions. [2024-10-14 17:09:02,184 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7737478411053541 [2024-10-14 17:09:02,184 INFO L175 Difference]: Start difference. First operand has 178 places, 173 transitions, 372 flow. Second operand 6 states and 896 transitions. [2024-10-14 17:09:02,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 220 transitions, 638 flow [2024-10-14 17:09:02,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 220 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:09:02,189 INFO L231 Difference]: Finished difference. Result has 181 places, 172 transitions, 380 flow [2024-10-14 17:09:02,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=380, PETRI_PLACES=181, PETRI_TRANSITIONS=172} [2024-10-14 17:09:02,190 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 5 predicate places. [2024-10-14 17:09:02,190 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 172 transitions, 380 flow [2024-10-14 17:09:02,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:02,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:02,191 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] [2024-10-14 17:09:02,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 17:09:02,191 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:09:02,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:02,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1827650231, now seen corresponding path program 1 times [2024-10-14 17:09:02,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:02,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039722860] [2024-10-14 17:09:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:02,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:02,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:02,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039722860] [2024-10-14 17:09:02,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039722860] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:02,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:02,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:02,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128217783] [2024-10-14 17:09:02,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:02,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:02,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:02,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:02,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:02,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 193 [2024-10-14 17:09:02,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 172 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:02,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:02,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 193 [2024-10-14 17:09:02,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:04,052 INFO L124 PetriNetUnfolderBase]: 4085/14792 cut-off events. [2024-10-14 17:09:04,053 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2024-10-14 17:09:04,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21539 conditions, 14792 events. 4085/14792 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 164322 event pairs, 1409 based on Foata normal form. 0/13243 useless extension candidates. Maximal degree in co-relation 21532. Up to 3578 conditions per place. [2024-10-14 17:09:04,155 INFO L140 encePairwiseOnDemand]: 174/193 looper letters, 58 selfloop transitions, 14 changer transitions 0/205 dead transitions. [2024-10-14 17:09:04,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 205 transitions, 601 flow [2024-10-14 17:09:04,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2024-10-14 17:09:04,158 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8272884283246977 [2024-10-14 17:09:04,158 INFO L175 Difference]: Start difference. First operand has 181 places, 172 transitions, 380 flow. Second operand 3 states and 479 transitions. [2024-10-14 17:09:04,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 205 transitions, 601 flow [2024-10-14 17:09:04,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 205 transitions, 589 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 17:09:04,162 INFO L231 Difference]: Finished difference. Result has 180 places, 186 transitions, 490 flow [2024-10-14 17:09:04,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=180, PETRI_TRANSITIONS=186} [2024-10-14 17:09:04,164 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 4 predicate places. [2024-10-14 17:09:04,165 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 186 transitions, 490 flow [2024-10-14 17:09:04,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:04,166 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:04,166 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] [2024-10-14 17:09:04,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 17:09:04,166 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:09:04,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:04,167 INFO L85 PathProgramCache]: Analyzing trace with hash 909106138, now seen corresponding path program 1 times [2024-10-14 17:09:04,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:04,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716092796] [2024-10-14 17:09:04,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:04,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:04,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:04,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716092796] [2024-10-14 17:09:04,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716092796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:04,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:04,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:04,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300776332] [2024-10-14 17:09:04,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:04,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:04,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:04,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:04,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:04,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 193 [2024-10-14 17:09:04,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 186 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:04,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:04,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 193 [2024-10-14 17:09:04,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:06,060 INFO L124 PetriNetUnfolderBase]: 4151/16635 cut-off events. [2024-10-14 17:09:06,060 INFO L125 PetriNetUnfolderBase]: For 4322/4497 co-relation queries the response was YES. [2024-10-14 17:09:06,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27453 conditions, 16635 events. 4151/16635 cut-off events. For 4322/4497 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 195215 event pairs, 2411 based on Foata normal form. 46/15100 useless extension candidates. Maximal degree in co-relation 27445. Up to 5625 conditions per place. [2024-10-14 17:09:06,158 INFO L140 encePairwiseOnDemand]: 184/193 looper letters, 52 selfloop transitions, 14 changer transitions 0/210 dead transitions. [2024-10-14 17:09:06,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 210 transitions, 708 flow [2024-10-14 17:09:06,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2024-10-14 17:09:06,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8169257340241797 [2024-10-14 17:09:06,161 INFO L175 Difference]: Start difference. First operand has 180 places, 186 transitions, 490 flow. Second operand 3 states and 473 transitions. [2024-10-14 17:09:06,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 210 transitions, 708 flow [2024-10-14 17:09:06,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 210 transitions, 670 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:09:06,174 INFO L231 Difference]: Finished difference. Result has 182 places, 198 transitions, 588 flow [2024-10-14 17:09:06,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=588, PETRI_PLACES=182, PETRI_TRANSITIONS=198} [2024-10-14 17:09:06,175 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, 6 predicate places. [2024-10-14 17:09:06,175 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 198 transitions, 588 flow [2024-10-14 17:09:06,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:06,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:06,176 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:09:06,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 17:09:06,176 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:09:06,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:06,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1460415895, now seen corresponding path program 1 times [2024-10-14 17:09:06,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:06,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584540913] [2024-10-14 17:09:06,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:06,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:06,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:06,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584540913] [2024-10-14 17:09:06,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584540913] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 17:09:06,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701951826] [2024-10-14 17:09:06,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:06,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 17:09:06,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:09:06,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 17:09:06,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 17:09:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:06,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 17:09:06,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 17:09:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:06,438 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 17:09:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:06,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701951826] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 17:09:06,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 17:09:06,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-14 17:09:06,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22870315] [2024-10-14 17:09:06,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 17:09:06,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 17:09:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:06,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 17:09:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:09:06,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 193 [2024-10-14 17:09:06,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 198 transitions, 588 flow. Second operand has 10 states, 10 states have (on average 146.5) internal successors, (1465), 10 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:06,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:06,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 193 [2024-10-14 17:09:06,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:07,190 INFO L124 PetriNetUnfolderBase]: 762/3672 cut-off events. [2024-10-14 17:09:07,191 INFO L125 PetriNetUnfolderBase]: For 511/522 co-relation queries the response was YES. [2024-10-14 17:09:07,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5704 conditions, 3672 events. 762/3672 cut-off events. For 511/522 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 33068 event pairs, 75 based on Foata normal form. 105/3541 useless extension candidates. Maximal degree in co-relation 5695. Up to 478 conditions per place. [2024-10-14 17:09:07,208 INFO L140 encePairwiseOnDemand]: 188/193 looper letters, 72 selfloop transitions, 7 changer transitions 0/202 dead transitions. [2024-10-14 17:09:07,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 202 transitions, 708 flow [2024-10-14 17:09:07,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 17:09:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 17:09:07,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1377 transitions. [2024-10-14 17:09:07,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7927461139896373 [2024-10-14 17:09:07,212 INFO L175 Difference]: Start difference. First operand has 182 places, 198 transitions, 588 flow. Second operand 9 states and 1377 transitions. [2024-10-14 17:09:07,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 202 transitions, 708 flow [2024-10-14 17:09:07,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 202 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:09:07,219 INFO L231 Difference]: Finished difference. Result has 143 places, 146 transitions, 432 flow [2024-10-14 17:09:07,219 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=432, PETRI_PLACES=143, PETRI_TRANSITIONS=146} [2024-10-14 17:09:07,220 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, -33 predicate places. [2024-10-14 17:09:07,220 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 146 transitions, 432 flow [2024-10-14 17:09:07,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 146.5) internal successors, (1465), 10 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:07,221 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:07,222 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:09:07,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 17:09:07,422 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,SelfDestructingSolverStorable11 [2024-10-14 17:09:07,423 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:09:07,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:07,424 INFO L85 PathProgramCache]: Analyzing trace with hash -685547369, now seen corresponding path program 1 times [2024-10-14 17:09:07,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:07,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404565094] [2024-10-14 17:09:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:07,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-14 17:09:07,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:07,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404565094] [2024-10-14 17:09:07,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404565094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:07,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:07,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:07,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304169376] [2024-10-14 17:09:07,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:07,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:07,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:07,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:07,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:07,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 193 [2024-10-14 17:09:07,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 146 transitions, 432 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) [2024-10-14 17:09:07,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:07,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 193 [2024-10-14 17:09:07,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:07,674 INFO L124 PetriNetUnfolderBase]: 260/1287 cut-off events. [2024-10-14 17:09:07,675 INFO L125 PetriNetUnfolderBase]: For 454/475 co-relation queries the response was YES. [2024-10-14 17:09:07,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2333 conditions, 1287 events. 260/1287 cut-off events. For 454/475 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 8696 event pairs, 132 based on Foata normal form. 7/1202 useless extension candidates. Maximal degree in co-relation 2324. Up to 459 conditions per place. [2024-10-14 17:09:07,687 INFO L140 encePairwiseOnDemand]: 185/193 looper letters, 42 selfloop transitions, 12 changer transitions 0/160 dead transitions. [2024-10-14 17:09:07,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 160 transitions, 584 flow [2024-10-14 17:09:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2024-10-14 17:09:07,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7927461139896373 [2024-10-14 17:09:07,690 INFO L175 Difference]: Start difference. First operand has 143 places, 146 transitions, 432 flow. Second operand 3 states and 459 transitions. [2024-10-14 17:09:07,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 160 transitions, 584 flow [2024-10-14 17:09:07,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 160 transitions, 569 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-10-14 17:09:07,694 INFO L231 Difference]: Finished difference. Result has 142 places, 154 transitions, 515 flow [2024-10-14 17:09:07,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=515, PETRI_PLACES=142, PETRI_TRANSITIONS=154} [2024-10-14 17:09:07,696 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, -34 predicate places. [2024-10-14 17:09:07,696 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 154 transitions, 515 flow [2024-10-14 17:09:07,697 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) [2024-10-14 17:09:07,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:07,697 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] [2024-10-14 17:09:07,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 17:09:07,698 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:09:07,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:07,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1241489000, now seen corresponding path program 1 times [2024-10-14 17:09:07,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:07,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831306391] [2024-10-14 17:09:07,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:07,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:07,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:07,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831306391] [2024-10-14 17:09:07,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831306391] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:07,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:07,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:07,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083341339] [2024-10-14 17:09:07,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:07,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:07,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:07,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:07,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:07,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 193 [2024-10-14 17:09:07,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 154 transitions, 515 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:07,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:07,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 193 [2024-10-14 17:09:07,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:07,953 INFO L124 PetriNetUnfolderBase]: 291/1359 cut-off events. [2024-10-14 17:09:07,953 INFO L125 PetriNetUnfolderBase]: For 1124/1159 co-relation queries the response was YES. [2024-10-14 17:09:07,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2787 conditions, 1359 events. 291/1359 cut-off events. For 1124/1159 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9379 event pairs, 134 based on Foata normal form. 9/1292 useless extension candidates. Maximal degree in co-relation 2778. Up to 501 conditions per place. [2024-10-14 17:09:07,963 INFO L140 encePairwiseOnDemand]: 185/193 looper letters, 49 selfloop transitions, 12 changer transitions 0/169 dead transitions. [2024-10-14 17:09:07,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 169 transitions, 704 flow [2024-10-14 17:09:07,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:07,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2024-10-14 17:09:07,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7944732297063903 [2024-10-14 17:09:07,965 INFO L175 Difference]: Start difference. First operand has 142 places, 154 transitions, 515 flow. Second operand 3 states and 460 transitions. [2024-10-14 17:09:07,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 169 transitions, 704 flow [2024-10-14 17:09:07,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 169 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 17:09:07,971 INFO L231 Difference]: Finished difference. Result has 144 places, 162 transitions, 601 flow [2024-10-14 17:09:07,971 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=601, PETRI_PLACES=144, PETRI_TRANSITIONS=162} [2024-10-14 17:09:07,972 INFO L277 CegarLoopForPetriNet]: 176 programPoint places, -32 predicate places. [2024-10-14 17:09:07,972 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 162 transitions, 601 flow [2024-10-14 17:09:07,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:07,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:07,973 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] [2024-10-14 17:09:07,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 17:09:07,973 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-14 17:09:07,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:07,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1863380673, now seen corresponding path program 1 times [2024-10-14 17:09:07,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:07,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680609142] [2024-10-14 17:09:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:07,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:09:07,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 17:09:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 17:09:08,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 17:09:08,024 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 17:09:08,024 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-10-14 17:09:08,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2024-10-14 17:09:08,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2024-10-14 17:09:08,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2024-10-14 17:09:08,025 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2024-10-14 17:09:08,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2024-10-14 17:09:08,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2024-10-14 17:09:08,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2024-10-14 17:09:08,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2024-10-14 17:09:08,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2024-10-14 17:09:08,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2024-10-14 17:09:08,026 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2024-10-14 17:09:08,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2024-10-14 17:09:08,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2024-10-14 17:09:08,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2024-10-14 17:09:08,027 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2024-10-14 17:09:08,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 17:09:08,028 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:09:08,029 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 17:09:08,029 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 17:09:08,064 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-14 17:09:08,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 242 transitions, 511 flow [2024-10-14 17:09:08,126 INFO L124 PetriNetUnfolderBase]: 62/532 cut-off events. [2024-10-14 17:09:08,127 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-14 17:09:08,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 532 events. 62/532 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2051 event pairs, 1 based on Foata normal form. 0/438 useless extension candidates. Maximal degree in co-relation 355. Up to 16 conditions per place. [2024-10-14 17:09:08,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 242 transitions, 511 flow [2024-10-14 17:09:08,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 242 transitions, 511 flow [2024-10-14 17:09:08,137 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:09:08,138 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;@7949dd4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:09:08,138 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-10-14 17:09:08,141 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 17:09:08,141 INFO L124 PetriNetUnfolderBase]: 4/49 cut-off events. [2024-10-14 17:09:08,141 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 17:09:08,141 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:08,141 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] [2024-10-14 17:09:08,141 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 17:09:08,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:08,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1938267136, now seen corresponding path program 1 times [2024-10-14 17:09:08,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:08,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557482350] [2024-10-14 17:09:08,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:08,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:08,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:08,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557482350] [2024-10-14 17:09:08,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557482350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:08,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:08,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:08,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632742920] [2024-10-14 17:09:08,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:08,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 17:09:08,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:08,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 17:09:08,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 17:09:08,160 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 242 [2024-10-14 17:09:08,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 242 transitions, 511 flow. Second operand has 2 states, 2 states have (on average 189.0) internal successors, (378), 2 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:08,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:08,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 242 [2024-10-14 17:09:08,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:10,822 INFO L124 PetriNetUnfolderBase]: 4833/20255 cut-off events. [2024-10-14 17:09:10,822 INFO L125 PetriNetUnfolderBase]: For 940/940 co-relation queries the response was YES. [2024-10-14 17:09:10,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27680 conditions, 20255 events. 4833/20255 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 243219 event pairs, 4795 based on Foata normal form. 5465/23774 useless extension candidates. Maximal degree in co-relation 23268. Up to 6995 conditions per place. [2024-10-14 17:09:10,956 INFO L140 encePairwiseOnDemand]: 217/242 looper letters, 28 selfloop transitions, 0 changer transitions 0/215 dead transitions. [2024-10-14 17:09:10,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 215 transitions, 513 flow [2024-10-14 17:09:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 17:09:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 17:09:10,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 429 transitions. [2024-10-14 17:09:10,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8863636363636364 [2024-10-14 17:09:10,958 INFO L175 Difference]: Start difference. First operand has 220 places, 242 transitions, 511 flow. Second operand 2 states and 429 transitions. [2024-10-14 17:09:10,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 215 transitions, 513 flow [2024-10-14 17:09:10,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 215 transitions, 513 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:10,963 INFO L231 Difference]: Finished difference. Result has 219 places, 215 transitions, 457 flow [2024-10-14 17:09:10,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=457, PETRI_PLACES=219, PETRI_TRANSITIONS=215} [2024-10-14 17:09:10,964 INFO L277 CegarLoopForPetriNet]: 220 programPoint places, -1 predicate places. [2024-10-14 17:09:10,964 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 215 transitions, 457 flow [2024-10-14 17:09:10,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 189.0) internal successors, (378), 2 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:10,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:10,964 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] [2024-10-14 17:09:10,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 17:09:10,965 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 17:09:10,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:10,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1292357163, now seen corresponding path program 1 times [2024-10-14 17:09:10,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:10,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685450253] [2024-10-14 17:09:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:10,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:10,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:10,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685450253] [2024-10-14 17:09:10,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685450253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:10,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:10,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:09:10,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183524007] [2024-10-14 17:09:10,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:10,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:10,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:10,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:10,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:11,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 242 [2024-10-14 17:09:11,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 215 transitions, 457 flow. Second operand has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:11,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:11,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 242 [2024-10-14 17:09:11,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:15,022 INFO L124 PetriNetUnfolderBase]: 8969/35405 cut-off events. [2024-10-14 17:09:15,022 INFO L125 PetriNetUnfolderBase]: For 937/937 co-relation queries the response was YES. [2024-10-14 17:09:15,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48644 conditions, 35405 events. 8969/35405 cut-off events. For 937/937 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 458373 event pairs, 8324 based on Foata normal form. 1/32003 useless extension candidates. Maximal degree in co-relation 48638. Up to 12802 conditions per place. [2024-10-14 17:09:15,220 INFO L140 encePairwiseOnDemand]: 239/242 looper letters, 39 selfloop transitions, 2 changer transitions 0/222 dead transitions. [2024-10-14 17:09:15,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 222 transitions, 553 flow [2024-10-14 17:09:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:09:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 17:09:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2024-10-14 17:09:15,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8099173553719008 [2024-10-14 17:09:15,222 INFO L175 Difference]: Start difference. First operand has 219 places, 215 transitions, 457 flow. Second operand 3 states and 588 transitions. [2024-10-14 17:09:15,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 222 transitions, 553 flow [2024-10-14 17:09:15,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 222 transitions, 553 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 17:09:15,227 INFO L231 Difference]: Finished difference. Result has 222 places, 216 transitions, 469 flow [2024-10-14 17:09:15,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=469, PETRI_PLACES=222, PETRI_TRANSITIONS=216} [2024-10-14 17:09:15,228 INFO L277 CegarLoopForPetriNet]: 220 programPoint places, 2 predicate places. [2024-10-14 17:09:15,228 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 216 transitions, 469 flow [2024-10-14 17:09:15,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:15,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:15,229 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] [2024-10-14 17:09:15,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 17:09:15,229 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 17:09:15,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:15,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2122930970, now seen corresponding path program 1 times [2024-10-14 17:09:15,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:15,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819649051] [2024-10-14 17:09:15,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:15,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:15,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:15,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:15,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819649051] [2024-10-14 17:09:15,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819649051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:15,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:15,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 17:09:15,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142949717] [2024-10-14 17:09:15,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:15,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 17:09:15,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:15,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 17:09:15,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-14 17:09:15,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 242 [2024-10-14 17:09:15,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 216 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:15,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:15,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 242 [2024-10-14 17:09:15,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 17:09:22,890 INFO L124 PetriNetUnfolderBase]: 19695/66075 cut-off events. [2024-10-14 17:09:22,890 INFO L125 PetriNetUnfolderBase]: For 1505/1505 co-relation queries the response was YES. [2024-10-14 17:09:23,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95001 conditions, 66075 events. 19695/66075 cut-off events. For 1505/1505 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 893559 event pairs, 7382 based on Foata normal form. 0/60323 useless extension candidates. Maximal degree in co-relation 94993. Up to 20118 conditions per place. [2024-10-14 17:09:23,408 INFO L140 encePairwiseOnDemand]: 236/242 looper letters, 112 selfloop transitions, 6 changer transitions 0/287 dead transitions. [2024-10-14 17:09:23,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 287 transitions, 847 flow [2024-10-14 17:09:23,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:09:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 17:09:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1138 transitions. [2024-10-14 17:09:23,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7837465564738292 [2024-10-14 17:09:23,411 INFO L175 Difference]: Start difference. First operand has 222 places, 216 transitions, 469 flow. Second operand 6 states and 1138 transitions. [2024-10-14 17:09:23,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 287 transitions, 847 flow [2024-10-14 17:09:23,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 287 transitions, 845 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 17:09:23,418 INFO L231 Difference]: Finished difference. Result has 225 places, 215 transitions, 477 flow [2024-10-14 17:09:23,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=477, PETRI_PLACES=225, PETRI_TRANSITIONS=215} [2024-10-14 17:09:23,419 INFO L277 CegarLoopForPetriNet]: 220 programPoint places, 5 predicate places. [2024-10-14 17:09:23,419 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 215 transitions, 477 flow [2024-10-14 17:09:23,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:23,420 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 17:09:23,420 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] [2024-10-14 17:09:23,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 17:09:23,420 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-14 17:09:23,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:09:23,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2072502008, now seen corresponding path program 1 times [2024-10-14 17:09:23,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:09:23,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821715920] [2024-10-14 17:09:23,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:09:23,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:09:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:09:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:09:23,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:09:23,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821715920] [2024-10-14 17:09:23,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821715920] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:09:23,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:09:23,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:09:23,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737125426] [2024-10-14 17:09:23,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:09:23,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:09:23,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:09:23,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:09:23,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:09:23,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 242 [2024-10-14 17:09:23,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 215 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:09:23,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 17:09:23,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 242 [2024-10-14 17:09:23,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand