./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 12:32:49,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 12:32:49,571 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-12 12:32:49,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 12:32:49,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 12:32:49,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 12:32:49,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 12:32:49,603 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 12:32:49,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 12:32:49,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 12:32:49,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 12:32:49,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 12:32:49,637 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 12:32:49,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 12:32:49,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 12:32:49,640 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 12:32:49,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 12:32:49,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 12:32:49,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 12:32:49,641 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 12:32:49,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 12:32:49,644 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 12:32:49,644 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-12 12:32:49,645 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 12:32:49,645 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 12:32:49,645 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 12:32:49,645 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 12:32:49,645 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 12:32:49,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 12:32:49,646 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 12:32:49,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 12:32:49,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:32:49,646 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 12:32:49,646 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 12:32:49,646 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 12:32:49,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 12:32:49,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 12:32:49,647 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 12:32:49,647 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 12:32:49,647 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 12:32:49,647 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 12:32:49,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df [2024-11-12 12:32:49,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 12:32:49,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 12:32:49,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 12:32:49,899 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 12:32:49,899 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 12:32:49,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2024-11-12 12:32:51,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 12:32:51,468 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 12:32:51,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2024-11-12 12:32:51,480 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e771e3f29/e6fca4aff892438680c73f0abafc8955/FLAGd3ca30af4 [2024-11-12 12:32:51,830 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e771e3f29/e6fca4aff892438680c73f0abafc8955 [2024-11-12 12:32:51,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 12:32:51,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 12:32:51,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 12:32:51,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 12:32:51,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 12:32:51,839 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:32:51" (1/1) ... [2024-11-12 12:32:51,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4fe918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:51, skipping insertion in model container [2024-11-12 12:32:51,839 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:32:51" (1/1) ... [2024-11-12 12:32:51,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 12:32:52,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:32:52,143 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 12:32:52,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:32:52,277 INFO L204 MainTranslator]: Completed translation [2024-11-12 12:32:52,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52 WrapperNode [2024-11-12 12:32:52,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 12:32:52,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 12:32:52,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 12:32:52,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 12:32:52,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (1/1) ... [2024-11-12 12:32:52,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (1/1) ... [2024-11-12 12:32:52,361 INFO L138 Inliner]: procedures = 171, calls = 49, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 105 [2024-11-12 12:32:52,362 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 12:32:52,363 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 12:32:52,363 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 12:32:52,363 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 12:32:52,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (1/1) ... [2024-11-12 12:32:52,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (1/1) ... [2024-11-12 12:32:52,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (1/1) ... [2024-11-12 12:32:52,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (1/1) ... [2024-11-12 12:32:52,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (1/1) ... [2024-11-12 12:32:52,388 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (1/1) ... [2024-11-12 12:32:52,389 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (1/1) ... [2024-11-12 12:32:52,390 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (1/1) ... [2024-11-12 12:32:52,393 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 12:32:52,393 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 12:32:52,393 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 12:32:52,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 12:32:52,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (1/1) ... [2024-11-12 12:32:52,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:32:52,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:32:52,427 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) [2024-11-12 12:32:52,431 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 [2024-11-12 12:32:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-12 12:32:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-12 12:32:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-12 12:32:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 12:32:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 12:32:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-12 12:32:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-12 12:32:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 12:32:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-12 12:32:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-12 12:32:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 12:32:52,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 12:32:52,467 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 12:32:52,563 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 12:32:52,564 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 12:32:52,821 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 12:32:52,822 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 12:32:52,856 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 12:32:52,857 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-12 12:32:52,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:32:52 BoogieIcfgContainer [2024-11-12 12:32:52,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 12:32:52,859 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 12:32:52,859 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 12:32:52,861 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 12:32:52,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:32:51" (1/3) ... [2024-11-12 12:32:52,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44823a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:32:52, skipping insertion in model container [2024-11-12 12:32:52,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:32:52" (2/3) ... [2024-11-12 12:32:52,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44823a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:32:52, skipping insertion in model container [2024-11-12 12:32:52,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:32:52" (3/3) ... [2024-11-12 12:32:52,864 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2024-11-12 12:32:52,877 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 12:32:52,877 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-11-12 12:32:52,878 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 12:32:52,945 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-12 12:32:52,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 171 transitions, 349 flow [2024-11-12 12:32:53,042 INFO L124 PetriNetUnfolderBase]: 19/235 cut-off events. [2024-11-12 12:32:53,043 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 12:32:53,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 235 events. 19/235 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 713 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 131. Up to 4 conditions per place. [2024-11-12 12:32:53,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 171 transitions, 349 flow [2024-11-12 12:32:53,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 171 transitions, 349 flow [2024-11-12 12:32:53,066 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:32:53,072 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;@fdf07b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:32:53,073 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-12 12:32:53,087 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 12:32:53,088 INFO L124 PetriNetUnfolderBase]: 2/60 cut-off events. [2024-11-12 12:32:53,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 12:32:53,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:32:53,089 INFO L206 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] [2024-11-12 12:32:53,089 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-12 12:32:53,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:32:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash 467652431, now seen corresponding path program 1 times [2024-11-12 12:32:53,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:32:53,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176115235] [2024-11-12 12:32:53,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:32:53,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:32:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:32:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:32:53,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:32:53,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176115235] [2024-11-12 12:32:53,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176115235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:32:53,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:32:53,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 12:32:53,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623088008] [2024-11-12 12:32:53,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:32:53,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 12:32:53,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:32:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 12:32:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-12 12:32:54,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 171 [2024-11-12 12:32:54,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 171 transitions, 349 flow. Second operand has 6 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 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) [2024-11-12 12:32:54,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:32:54,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 171 [2024-11-12 12:32:54,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:32:54,466 INFO L124 PetriNetUnfolderBase]: 579/2152 cut-off events. [2024-11-12 12:32:54,467 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-12 12:32:54,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3410 conditions, 2152 events. 579/2152 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 15013 event pairs, 372 based on Foata normal form. 224/2225 useless extension candidates. Maximal degree in co-relation 3262. Up to 1080 conditions per place. [2024-11-12 12:32:54,484 INFO L140 encePairwiseOnDemand]: 136/171 looper letters, 73 selfloop transitions, 70 changer transitions 0/250 dead transitions. [2024-11-12 12:32:54,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 250 transitions, 793 flow [2024-11-12 12:32:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 12:32:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 12:32:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 828 transitions. [2024-11-12 12:32:54,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8070175438596491 [2024-11-12 12:32:54,503 INFO L175 Difference]: Start difference. First operand has 161 places, 171 transitions, 349 flow. Second operand 6 states and 828 transitions. [2024-11-12 12:32:54,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 250 transitions, 793 flow [2024-11-12 12:32:54,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 250 transitions, 793 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 12:32:54,513 INFO L231 Difference]: Finished difference. Result has 169 places, 226 transitions, 783 flow [2024-11-12 12:32:54,515 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=783, PETRI_PLACES=169, PETRI_TRANSITIONS=226} [2024-11-12 12:32:54,518 INFO L279 CegarLoopForPetriNet]: 161 programPoint places, 8 predicate places. [2024-11-12 12:32:54,519 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 226 transitions, 783 flow [2024-11-12 12:32:54,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 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) [2024-11-12 12:32:54,519 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:32:54,520 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:32:54,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 12:32:54,520 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-12 12:32:54,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:32:54,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1570351445, now seen corresponding path program 1 times [2024-11-12 12:32:54,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:32:54,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355708618] [2024-11-12 12:32:54,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:32:54,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:32:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:32:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:32:54,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:32:54,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355708618] [2024-11-12 12:32:54,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355708618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:32:54,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:32:54,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 12:32:54,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535046654] [2024-11-12 12:32:54,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:32:54,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:32:54,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:32:54,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:32:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:32:54,607 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 171 [2024-11-12 12:32:54,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 226 transitions, 783 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2024-11-12 12:32:54,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:32:54,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 171 [2024-11-12 12:32:54,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:32:54,727 INFO L124 PetriNetUnfolderBase]: 188/1063 cut-off events. [2024-11-12 12:32:54,727 INFO L125 PetriNetUnfolderBase]: For 119/133 co-relation queries the response was YES. [2024-11-12 12:32:54,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 1063 events. 188/1063 cut-off events. For 119/133 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6099 event pairs, 28 based on Foata normal form. 1/992 useless extension candidates. Maximal degree in co-relation 1641. Up to 191 conditions per place. [2024-11-12 12:32:54,733 INFO L140 encePairwiseOnDemand]: 168/171 looper letters, 22 selfloop transitions, 3 changer transitions 0/232 dead transitions. [2024-11-12 12:32:54,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 232 transitions, 845 flow [2024-11-12 12:32:54,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 12:32:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 12:32:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2024-11-12 12:32:54,734 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8674463937621832 [2024-11-12 12:32:54,734 INFO L175 Difference]: Start difference. First operand has 169 places, 226 transitions, 783 flow. Second operand 3 states and 445 transitions. [2024-11-12 12:32:54,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 232 transitions, 845 flow [2024-11-12 12:32:54,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 232 transitions, 845 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 12:32:54,745 INFO L231 Difference]: Finished difference. Result has 172 places, 226 transitions, 794 flow [2024-11-12 12:32:54,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=794, PETRI_PLACES=172, PETRI_TRANSITIONS=226} [2024-11-12 12:32:54,746 INFO L279 CegarLoopForPetriNet]: 161 programPoint places, 11 predicate places. [2024-11-12 12:32:54,747 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 226 transitions, 794 flow [2024-11-12 12:32:54,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2024-11-12 12:32:54,747 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:32:54,747 INFO L206 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] [2024-11-12 12:32:54,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 12:32:54,748 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-12 12:32:54,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:32:54,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1630556509, now seen corresponding path program 1 times [2024-11-12 12:32:54,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:32:54,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249392150] [2024-11-12 12:32:54,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:32:54,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:32:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:32:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:32:55,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:32:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249392150] [2024-11-12 12:32:55,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249392150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:32:55,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:32:55,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 12:32:55,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153020841] [2024-11-12 12:32:55,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:32:55,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 12:32:55,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:32:55,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 12:32:55,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-12 12:32:55,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 171 [2024-11-12 12:32:55,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 226 transitions, 794 flow. Second operand has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 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) [2024-11-12 12:32:55,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:32:55,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 171 [2024-11-12 12:32:55,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:32:55,483 INFO L124 PetriNetUnfolderBase]: 370/1574 cut-off events. [2024-11-12 12:32:55,483 INFO L125 PetriNetUnfolderBase]: For 473/492 co-relation queries the response was YES. [2024-11-12 12:32:55,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 1574 events. 370/1574 cut-off events. For 473/492 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 10718 event pairs, 96 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 3131. Up to 642 conditions per place. [2024-11-12 12:32:55,493 INFO L140 encePairwiseOnDemand]: 153/171 looper letters, 112 selfloop transitions, 53 changer transitions 0/285 dead transitions. [2024-11-12 12:32:55,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 285 transitions, 1366 flow [2024-11-12 12:32:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 12:32:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 12:32:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 797 transitions. [2024-11-12 12:32:55,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.776803118908382 [2024-11-12 12:32:55,496 INFO L175 Difference]: Start difference. First operand has 172 places, 226 transitions, 794 flow. Second operand 6 states and 797 transitions. [2024-11-12 12:32:55,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 285 transitions, 1366 flow [2024-11-12 12:32:55,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 285 transitions, 1360 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 12:32:55,507 INFO L231 Difference]: Finished difference. Result has 180 places, 269 transitions, 1276 flow [2024-11-12 12:32:55,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=171, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1276, PETRI_PLACES=180, PETRI_TRANSITIONS=269} [2024-11-12 12:32:55,508 INFO L279 CegarLoopForPetriNet]: 161 programPoint places, 19 predicate places. [2024-11-12 12:32:55,508 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 269 transitions, 1276 flow [2024-11-12 12:32:55,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 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) [2024-11-12 12:32:55,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:32:55,510 INFO L206 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] [2024-11-12 12:32:55,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 12:32:55,510 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-12 12:32:55,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:32:55,511 INFO L85 PathProgramCache]: Analyzing trace with hash 794013781, now seen corresponding path program 1 times [2024-11-12 12:32:55,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:32:55,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195677262] [2024-11-12 12:32:55,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:32:55,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:32:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:32:55,536 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 12:32:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 12:32:55,566 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 12:32:55,567 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 12:32:55,567 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-11-12 12:32:55,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2024-11-12 12:32:55,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2024-11-12 12:32:55,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 12 remaining) [2024-11-12 12:32:55,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2024-11-12 12:32:55,569 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2024-11-12 12:32:55,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2024-11-12 12:32:55,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2024-11-12 12:32:55,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2024-11-12 12:32:55,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2024-11-12 12:32:55,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2024-11-12 12:32:55,570 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2024-11-12 12:32:55,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 12:32:55,571 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-12 12:32:55,572 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-12 12:32:55,572 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-12 12:32:55,599 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-12 12:32:55,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 237 transitions, 490 flow [2024-11-12 12:32:55,631 INFO L124 PetriNetUnfolderBase]: 34/393 cut-off events. [2024-11-12 12:32:55,631 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-12 12:32:55,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 393 events. 34/393 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1497 event pairs, 0 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2024-11-12 12:32:55,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 222 places, 237 transitions, 490 flow [2024-11-12 12:32:55,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 237 transitions, 490 flow [2024-11-12 12:32:55,637 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:32:55,638 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;@fdf07b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:32:55,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-11-12 12:32:55,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 12:32:55,644 INFO L124 PetriNetUnfolderBase]: 2/60 cut-off events. [2024-11-12 12:32:55,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-12 12:32:55,644 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:32:55,644 INFO L206 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] [2024-11-12 12:32:55,644 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-12 12:32:55,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:32:55,645 INFO L85 PathProgramCache]: Analyzing trace with hash -83295473, now seen corresponding path program 1 times [2024-11-12 12:32:55,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:32:55,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794203255] [2024-11-12 12:32:55,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:32:55,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:32:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:32:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:32:55,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:32:55,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794203255] [2024-11-12 12:32:55,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794203255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:32:55,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:32:55,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 12:32:55,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874011990] [2024-11-12 12:32:55,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:32:55,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 12:32:55,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:32:55,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 12:32:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-12 12:32:56,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 237 [2024-11-12 12:32:56,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 237 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 145.5) internal successors, (873), 6 states have internal predecessors, (873), 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) [2024-11-12 12:32:56,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:32:56,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 237 [2024-11-12 12:32:56,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:33:03,467 INFO L124 PetriNetUnfolderBase]: 29151/68521 cut-off events. [2024-11-12 12:33:03,467 INFO L125 PetriNetUnfolderBase]: For 733/733 co-relation queries the response was YES. [2024-11-12 12:33:03,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114057 conditions, 68521 events. 29151/68521 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 763548 event pairs, 20503 based on Foata normal form. 8143/72555 useless extension candidates. Maximal degree in co-relation 101006. Up to 40549 conditions per place. [2024-11-12 12:33:03,786 INFO L140 encePairwiseOnDemand]: 180/237 looper letters, 122 selfloop transitions, 134 changer transitions 0/399 dead transitions. [2024-11-12 12:33:03,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 399 transitions, 1331 flow [2024-11-12 12:33:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 12:33:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 12:33:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1187 transitions. [2024-11-12 12:33:03,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8347398030942335 [2024-11-12 12:33:03,790 INFO L175 Difference]: Start difference. First operand has 222 places, 237 transitions, 490 flow. Second operand 6 states and 1187 transitions. [2024-11-12 12:33:03,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 399 transitions, 1331 flow [2024-11-12 12:33:03,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 399 transitions, 1331 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 12:33:03,803 INFO L231 Difference]: Finished difference. Result has 230 places, 350 transitions, 1328 flow [2024-11-12 12:33:03,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1328, PETRI_PLACES=230, PETRI_TRANSITIONS=350} [2024-11-12 12:33:03,804 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 8 predicate places. [2024-11-12 12:33:03,805 INFO L471 AbstractCegarLoop]: Abstraction has has 230 places, 350 transitions, 1328 flow [2024-11-12 12:33:03,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.5) internal successors, (873), 6 states have internal predecessors, (873), 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) [2024-11-12 12:33:03,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:33:03,806 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:33:03,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 12:33:03,806 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-12 12:33:03,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:33:03,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1544665099, now seen corresponding path program 1 times [2024-11-12 12:33:03,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:33:03,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020669910] [2024-11-12 12:33:03,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:33:03,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:33:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:33:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:33:03,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:33:03,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020669910] [2024-11-12 12:33:03,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020669910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:33:03,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:33:03,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 12:33:03,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550836686] [2024-11-12 12:33:03,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:33:03,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:33:03,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:33:03,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:33:03,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:33:03,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 237 [2024-11-12 12:33:03,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 350 transitions, 1328 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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) [2024-11-12 12:33:03,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:33:03,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 237 [2024-11-12 12:33:03,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:33:06,963 INFO L124 PetriNetUnfolderBase]: 9834/30958 cut-off events. [2024-11-12 12:33:06,964 INFO L125 PetriNetUnfolderBase]: For 5174/5550 co-relation queries the response was YES. [2024-11-12 12:33:07,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55394 conditions, 30958 events. 9834/30958 cut-off events. For 5174/5550 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 350060 event pairs, 3863 based on Foata normal form. 1/28435 useless extension candidates. Maximal degree in co-relation 49398. Up to 9284 conditions per place. [2024-11-12 12:33:07,111 INFO L140 encePairwiseOnDemand]: 234/237 looper letters, 32 selfloop transitions, 3 changer transitions 0/358 dead transitions. [2024-11-12 12:33:07,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 358 transitions, 1420 flow [2024-11-12 12:33:07,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 12:33:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 12:33:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2024-11-12 12:33:07,114 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8579465541490858 [2024-11-12 12:33:07,114 INFO L175 Difference]: Start difference. First operand has 230 places, 350 transitions, 1328 flow. Second operand 3 states and 610 transitions. [2024-11-12 12:33:07,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 358 transitions, 1420 flow [2024-11-12 12:33:07,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 358 transitions, 1420 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-12 12:33:07,204 INFO L231 Difference]: Finished difference. Result has 233 places, 352 transitions, 1353 flow [2024-11-12 12:33:07,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1353, PETRI_PLACES=233, PETRI_TRANSITIONS=352} [2024-11-12 12:33:07,206 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 11 predicate places. [2024-11-12 12:33:07,206 INFO L471 AbstractCegarLoop]: Abstraction has has 233 places, 352 transitions, 1353 flow [2024-11-12 12:33:07,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 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) [2024-11-12 12:33:07,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:33:07,208 INFO L206 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] [2024-11-12 12:33:07,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 12:33:07,208 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-12 12:33:07,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:33:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1452137411, now seen corresponding path program 1 times [2024-11-12 12:33:07,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:33:07,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702636947] [2024-11-12 12:33:07,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:33:07,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:33:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:33:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:33:07,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:33:07,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702636947] [2024-11-12 12:33:07,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702636947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:33:07,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:33:07,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 12:33:07,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741523452] [2024-11-12 12:33:07,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:33:07,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 12:33:07,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:33:07,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 12:33:07,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-12 12:33:07,760 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 237 [2024-11-12 12:33:07,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 352 transitions, 1353 flow. Second operand has 6 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 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) [2024-11-12 12:33:07,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:33:07,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 237 [2024-11-12 12:33:07,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:33:13,549 INFO L124 PetriNetUnfolderBase]: 21468/52051 cut-off events. [2024-11-12 12:33:13,550 INFO L125 PetriNetUnfolderBase]: For 19115/20486 co-relation queries the response was YES. [2024-11-12 12:33:13,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116664 conditions, 52051 events. 21468/52051 cut-off events. For 19115/20486 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 574105 event pairs, 8210 based on Foata normal form. 38/49382 useless extension candidates. Maximal degree in co-relation 116492. Up to 25409 conditions per place. [2024-11-12 12:33:13,915 INFO L140 encePairwiseOnDemand]: 211/237 looper letters, 192 selfloop transitions, 141 changer transitions 0/531 dead transitions. [2024-11-12 12:33:13,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 531 transitions, 2821 flow [2024-11-12 12:33:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 12:33:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 12:33:13,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1141 transitions. [2024-11-12 12:33:13,921 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8023909985935302 [2024-11-12 12:33:13,921 INFO L175 Difference]: Start difference. First operand has 233 places, 352 transitions, 1353 flow. Second operand 6 states and 1141 transitions. [2024-11-12 12:33:13,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 531 transitions, 2821 flow [2024-11-12 12:33:14,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 531 transitions, 2818 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-12 12:33:14,107 INFO L231 Difference]: Finished difference. Result has 242 places, 483 transitions, 2734 flow [2024-11-12 12:33:14,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2734, PETRI_PLACES=242, PETRI_TRANSITIONS=483} [2024-11-12 12:33:14,108 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 20 predicate places. [2024-11-12 12:33:14,108 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 483 transitions, 2734 flow [2024-11-12 12:33:14,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.16666666666666) internal successors, (991), 6 states have internal predecessors, (991), 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) [2024-11-12 12:33:14,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:33:14,109 INFO L206 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] [2024-11-12 12:33:14,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 12:33:14,109 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-12 12:33:14,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:33:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash -109579940, now seen corresponding path program 1 times [2024-11-12 12:33:14,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:33:14,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852096470] [2024-11-12 12:33:14,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:33:14,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:33:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:33:14,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:33:14,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:33:14,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852096470] [2024-11-12 12:33:14,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852096470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:33:14,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:33:14,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 12:33:14,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011625601] [2024-11-12 12:33:14,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:33:14,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 12:33:14,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:33:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 12:33:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 12:33:14,196 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 237 [2024-11-12 12:33:14,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 483 transitions, 2734 flow. Second operand has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 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) [2024-11-12 12:33:14,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:33:14,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 237 [2024-11-12 12:33:14,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:33:19,354 INFO L124 PetriNetUnfolderBase]: 14229/45033 cut-off events. [2024-11-12 12:33:19,354 INFO L125 PetriNetUnfolderBase]: For 21880/23377 co-relation queries the response was YES. [2024-11-12 12:33:19,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97632 conditions, 45033 events. 14229/45033 cut-off events. For 21880/23377 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 537748 event pairs, 3496 based on Foata normal form. 46/41858 useless extension candidates. Maximal degree in co-relation 38369. Up to 14734 conditions per place. [2024-11-12 12:33:19,645 INFO L140 encePairwiseOnDemand]: 232/237 looper letters, 56 selfloop transitions, 7 changer transitions 0/515 dead transitions. [2024-11-12 12:33:19,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 515 transitions, 2924 flow [2024-11-12 12:33:19,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 12:33:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 12:33:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1202 transitions. [2024-11-12 12:33:19,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8452883263009845 [2024-11-12 12:33:19,648 INFO L175 Difference]: Start difference. First operand has 242 places, 483 transitions, 2734 flow. Second operand 6 states and 1202 transitions. [2024-11-12 12:33:19,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 515 transitions, 2924 flow [2024-11-12 12:33:19,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 515 transitions, 2906 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-12 12:33:19,823 INFO L231 Difference]: Finished difference. Result has 250 places, 485 transitions, 2748 flow [2024-11-12 12:33:19,824 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2748, PETRI_PLACES=250, PETRI_TRANSITIONS=485} [2024-11-12 12:33:19,825 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 28 predicate places. [2024-11-12 12:33:19,825 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 485 transitions, 2748 flow [2024-11-12 12:33:19,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 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) [2024-11-12 12:33:19,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:33:19,826 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:33:19,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 12:33:19,826 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-12 12:33:19,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:33:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash -369686586, now seen corresponding path program 1 times [2024-11-12 12:33:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:33:19,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065286365] [2024-11-12 12:33:19,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:33:19,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:33:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:33:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:33:20,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:33:20,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065286365] [2024-11-12 12:33:20,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065286365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:33:20,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:33:20,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 12:33:20,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814425019] [2024-11-12 12:33:20,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:33:20,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 12:33:20,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:33:20,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 12:33:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-12 12:33:20,379 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 237 [2024-11-12 12:33:20,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 485 transitions, 2748 flow. Second operand has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 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) [2024-11-12 12:33:20,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:33:20,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 237 [2024-11-12 12:33:20,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 12:33:32,544 INFO L124 PetriNetUnfolderBase]: 44840/102231 cut-off events. [2024-11-12 12:33:32,545 INFO L125 PetriNetUnfolderBase]: For 68600/72480 co-relation queries the response was YES. [2024-11-12 12:33:32,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259401 conditions, 102231 events. 44840/102231 cut-off events. For 68600/72480 co-relation queries the response was YES. Maximal size of possible extension queue 1649. Compared 1173669 event pairs, 22789 based on Foata normal form. 146/96706 useless extension candidates. Maximal degree in co-relation 232735. Up to 64110 conditions per place. [2024-11-12 12:33:33,206 INFO L140 encePairwiseOnDemand]: 202/237 looper letters, 372 selfloop transitions, 245 changer transitions 0/768 dead transitions. [2024-11-12 12:33:33,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 768 transitions, 5440 flow [2024-11-12 12:33:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 12:33:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-12 12:33:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1114 transitions. [2024-11-12 12:33:33,209 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7834036568213784 [2024-11-12 12:33:33,209 INFO L175 Difference]: Start difference. First operand has 250 places, 485 transitions, 2748 flow. Second operand 6 states and 1114 transitions. [2024-11-12 12:33:33,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 768 transitions, 5440 flow [2024-11-12 12:33:33,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 768 transitions, 5430 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-12 12:33:33,613 INFO L231 Difference]: Finished difference. Result has 258 places, 720 transitions, 5256 flow [2024-11-12 12:33:33,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5256, PETRI_PLACES=258, PETRI_TRANSITIONS=720} [2024-11-12 12:33:33,614 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 36 predicate places. [2024-11-12 12:33:33,614 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 720 transitions, 5256 flow [2024-11-12 12:33:33,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 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) [2024-11-12 12:33:33,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 12:33:33,615 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:33:33,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 12:33:33,615 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-12 12:33:33,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:33:33,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1189560747, now seen corresponding path program 1 times [2024-11-12 12:33:33,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:33:33,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513378141] [2024-11-12 12:33:33,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:33:33,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:33:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:33:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:33:33,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:33:33,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513378141] [2024-11-12 12:33:33,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513378141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:33:33,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:33:33,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 12:33:33,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346473641] [2024-11-12 12:33:33,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:33:33,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 12:33:33,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:33:33,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 12:33:33,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-12 12:33:34,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 237 [2024-11-12 12:33:34,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 720 transitions, 5256 flow. Second operand has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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) [2024-11-12 12:33:34,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 12:33:34,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 237 [2024-11-12 12:33:34,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand