./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_75-tricky_address2_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version fca748b1 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_75-tricky_address2_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 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:50:44,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:50:44,761 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-20 13:50:44,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:50:44,770 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:50:44,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:50:44,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:50:44,795 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:50:44,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:50:44,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:50:44,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:50:44,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:50:44,797 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:50:44,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:50:44,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:50:44,798 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:50:44,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:50:44,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:50:44,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:50:44,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:50:44,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:50:44,801 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:50:44,801 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-20 13:50:44,802 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:50:44,802 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 13:50:44,802 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:50:44,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:50:44,803 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:50:44,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:50:44,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:50:44,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:50:44,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:50:44,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:50:44,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:50:44,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:50:44,806 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:50:44,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:50:44,806 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:50:44,806 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:50:44,807 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:50:44,807 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:50:44,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df [2024-11-20 13:50:45,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:50:45,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:50:45,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:50:45,122 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:50:45,122 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:50:45,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2024-11-20 13:50:46,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:50:46,851 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:50:46,851 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2024-11-20 13:50:46,867 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4a3876e/41f96e4e418a4228a522817f93cfd517/FLAGb1f4c47ce [2024-11-20 13:50:47,164 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca4a3876e/41f96e4e418a4228a522817f93cfd517 [2024-11-20 13:50:47,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:50:47,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:50:47,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:50:47,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:50:47,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:50:47,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:47,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e10fdaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47, skipping insertion in model container [2024-11-20 13:50:47,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:47,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:50:47,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:50:47,723 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:50:47,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:50:47,858 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:50:47,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47 WrapperNode [2024-11-20 13:50:47,859 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:50:47,860 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:50:47,860 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:50:47,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:50:47,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:47,894 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:47,942 INFO L138 Inliner]: procedures = 271, calls = 110, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 345 [2024-11-20 13:50:47,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:50:47,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:50:47,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:50:47,947 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:50:47,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:47,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:47,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:47,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:47,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:48,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:48,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:48,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:48,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:50:48,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:50:48,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:50:48,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:50:48,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (1/1) ... [2024-11-20 13:50:48,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:50:48,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:48,055 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) [2024-11-20 13:50:48,058 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 [2024-11-20 13:50:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 13:50:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:50:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-20 13:50:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-20 13:50:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-20 13:50:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-20 13:50:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:50:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-20 13:50:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-20 13:50:48,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-20 13:50:48,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:50:48,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:50:48,104 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 13:50:48,285 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:50:48,287 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:50:48,811 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 13:50:48,812 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:50:48,860 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:50:48,861 INFO L316 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-20 13:50:48,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:50:48 BoogieIcfgContainer [2024-11-20 13:50:48,862 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:50:48,864 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:50:48,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:50:48,867 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:50:48,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:50:47" (1/3) ... [2024-11-20 13:50:48,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3450e8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:50:48, skipping insertion in model container [2024-11-20 13:50:48,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:50:47" (2/3) ... [2024-11-20 13:50:48,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3450e8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:50:48, skipping insertion in model container [2024-11-20 13:50:48,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:50:48" (3/3) ... [2024-11-20 13:50:48,870 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2024-11-20 13:50:48,886 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:50:48,887 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-20 13:50:48,887 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 13:50:48,991 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-20 13:50:49,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 351 transitions, 709 flow [2024-11-20 13:50:49,265 INFO L124 PetriNetUnfolderBase]: 48/480 cut-off events. [2024-11-20 13:50:49,265 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-20 13:50:49,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 480 events. 48/480 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1691 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 245. Up to 8 conditions per place. [2024-11-20 13:50:49,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 351 transitions, 709 flow [2024-11-20 13:50:49,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 351 transitions, 709 flow [2024-11-20 13:50:49,300 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:50:49,309 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;@6fd3122e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:50:49,309 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-20 13:50:49,333 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:50:49,334 INFO L124 PetriNetUnfolderBase]: 8/133 cut-off events. [2024-11-20 13:50:49,334 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:50:49,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:49,335 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:49,336 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-20 13:50:49,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1811379567, now seen corresponding path program 1 times [2024-11-20 13:50:49,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:49,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798089427] [2024-11-20 13:50:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:49,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:49,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:49,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798089427] [2024-11-20 13:50:49,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798089427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:49,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:50:49,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:50:49,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160424910] [2024-11-20 13:50:49,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:49,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:50:49,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:49,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:50:49,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:50:49,851 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 351 [2024-11-20 13:50:49,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 351 transitions, 709 flow. Second operand has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 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) [2024-11-20 13:50:49,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:49,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 351 [2024-11-20 13:50:49,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:50,272 INFO L124 PetriNetUnfolderBase]: 85/1307 cut-off events. [2024-11-20 13:50:50,272 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-20 13:50:50,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 1307 events. 85/1307 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8368 event pairs, 72 based on Foata normal form. 206/1398 useless extension candidates. Maximal degree in co-relation 1247. Up to 178 conditions per place. [2024-11-20 13:50:50,286 INFO L140 encePairwiseOnDemand]: 319/351 looper letters, 23 selfloop transitions, 2 changer transitions 1/319 dead transitions. [2024-11-20 13:50:50,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 319 transitions, 695 flow [2024-11-20 13:50:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:50:50,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:50:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 944 transitions. [2024-11-20 13:50:50,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8964862298195632 [2024-11-20 13:50:50,314 INFO L175 Difference]: Start difference. First operand has 321 places, 351 transitions, 709 flow. Second operand 3 states and 944 transitions. [2024-11-20 13:50:50,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 319 transitions, 695 flow [2024-11-20 13:50:50,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 319 transitions, 695 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:50:50,328 INFO L231 Difference]: Finished difference. Result has 320 places, 318 transitions, 653 flow [2024-11-20 13:50:50,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=653, PETRI_PLACES=320, PETRI_TRANSITIONS=318} [2024-11-20 13:50:50,334 INFO L277 CegarLoopForPetriNet]: 321 programPoint places, -1 predicate places. [2024-11-20 13:50:50,336 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 318 transitions, 653 flow [2024-11-20 13:50:50,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 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) [2024-11-20 13:50:50,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:50,338 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:50,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:50:50,339 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-20 13:50:50,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:50,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2105922071, now seen corresponding path program 1 times [2024-11-20 13:50:50,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:50,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856092078] [2024-11-20 13:50:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:50,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:50,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:50,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856092078] [2024-11-20 13:50:50,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856092078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:50,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263909069] [2024-11-20 13:50:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:50,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:50,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:50,571 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) [2024-11-20 13:50:50,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 13:50:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:50,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 13:50:50,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:50,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:50:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:50,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263909069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:50:50,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:50:50,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 13:50:50,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463779130] [2024-11-20 13:50:50,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:50:50,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:50:50,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:50,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:50:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:50:50,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 351 [2024-11-20 13:50:50,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 318 transitions, 653 flow. Second operand has 10 states, 10 states have (on average 294.8) internal successors, (2948), 10 states have internal predecessors, (2948), 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) [2024-11-20 13:50:50,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:50,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 351 [2024-11-20 13:50:50,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:51,181 INFO L124 PetriNetUnfolderBase]: 85/1313 cut-off events. [2024-11-20 13:50:51,182 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-20 13:50:51,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 1313 events. 85/1313 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 8349 event pairs, 72 based on Foata normal form. 2/1201 useless extension candidates. Maximal degree in co-relation 1421. Up to 178 conditions per place. [2024-11-20 13:50:51,189 INFO L140 encePairwiseOnDemand]: 345/351 looper letters, 27 selfloop transitions, 9 changer transitions 0/326 dead transitions. [2024-11-20 13:50:51,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 326 transitions, 743 flow [2024-11-20 13:50:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 13:50:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 13:50:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2675 transitions. [2024-11-20 13:50:51,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.846786957898069 [2024-11-20 13:50:51,197 INFO L175 Difference]: Start difference. First operand has 320 places, 318 transitions, 653 flow. Second operand 9 states and 2675 transitions. [2024-11-20 13:50:51,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 326 transitions, 743 flow [2024-11-20 13:50:51,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 326 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 13:50:51,207 INFO L231 Difference]: Finished difference. Result has 329 places, 324 transitions, 701 flow [2024-11-20 13:50:51,208 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=701, PETRI_PLACES=329, PETRI_TRANSITIONS=324} [2024-11-20 13:50:51,209 INFO L277 CegarLoopForPetriNet]: 321 programPoint places, 8 predicate places. [2024-11-20 13:50:51,209 INFO L471 AbstractCegarLoop]: Abstraction has has 329 places, 324 transitions, 701 flow [2024-11-20 13:50:51,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 294.8) internal successors, (2948), 10 states have internal predecessors, (2948), 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) [2024-11-20 13:50:51,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:51,212 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:51,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 13:50:51,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:51,416 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-20 13:50:51,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:51,417 INFO L85 PathProgramCache]: Analyzing trace with hash 799000855, now seen corresponding path program 2 times [2024-11-20 13:50:51,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:51,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121877486] [2024-11-20 13:50:51,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:51,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:51,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:51,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121877486] [2024-11-20 13:50:51,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121877486] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:51,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703072336] [2024-11-20 13:50:51,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 13:50:51,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:51,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:51,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:51,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 13:50:51,769 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 13:50:51,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 13:50:51,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 13:50:51,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:51,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:50:51,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-20 13:50:51,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:51,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-20 13:50:51,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:51,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-20 13:50:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-20 13:50:52,057 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:50:52,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703072336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:52,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:50:52,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-20 13:50:52,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020046113] [2024-11-20 13:50:52,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:52,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:50:52,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:52,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:50:52,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-20 13:50:52,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 351 [2024-11-20 13:50:52,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 324 transitions, 701 flow. Second operand has 8 states, 8 states have (on average 244.125) internal successors, (1953), 8 states have internal predecessors, (1953), 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) [2024-11-20 13:50:52,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:52,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 351 [2024-11-20 13:50:52,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:53,174 INFO L124 PetriNetUnfolderBase]: 1305/4976 cut-off events. [2024-11-20 13:50:53,174 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-20 13:50:53,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7604 conditions, 4976 events. 1305/4976 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 43276 event pairs, 1025 based on Foata normal form. 1/4552 useless extension candidates. Maximal degree in co-relation 7480. Up to 2440 conditions per place. [2024-11-20 13:50:53,242 INFO L140 encePairwiseOnDemand]: 339/351 looper letters, 127 selfloop transitions, 11 changer transitions 2/387 dead transitions. [2024-11-20 13:50:53,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 387 transitions, 1107 flow [2024-11-20 13:50:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:50:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 13:50:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2086 transitions. [2024-11-20 13:50:53,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7428774928774928 [2024-11-20 13:50:53,249 INFO L175 Difference]: Start difference. First operand has 329 places, 324 transitions, 701 flow. Second operand 8 states and 2086 transitions. [2024-11-20 13:50:53,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 387 transitions, 1107 flow [2024-11-20 13:50:53,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 387 transitions, 1101 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 13:50:53,258 INFO L231 Difference]: Finished difference. Result has 340 places, 331 transitions, 762 flow [2024-11-20 13:50:53,259 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=762, PETRI_PLACES=340, PETRI_TRANSITIONS=331} [2024-11-20 13:50:53,260 INFO L277 CegarLoopForPetriNet]: 321 programPoint places, 19 predicate places. [2024-11-20 13:50:53,262 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 331 transitions, 762 flow [2024-11-20 13:50:53,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 244.125) internal successors, (1953), 8 states have internal predecessors, (1953), 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) [2024-11-20 13:50:53,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:53,265 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:53,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 13:50:53,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-20 13:50:53,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-20 13:50:53,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:53,470 INFO L85 PathProgramCache]: Analyzing trace with hash -669825344, now seen corresponding path program 1 times [2024-11-20 13:50:53,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:53,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139239627] [2024-11-20 13:50:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:53,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:53,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:53,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139239627] [2024-11-20 13:50:53,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139239627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:53,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039336656] [2024-11-20 13:50:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:53,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:53,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:53,784 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:53,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 13:50:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:53,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 13:50:53,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:53,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:50:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:54,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039336656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:50:54,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:50:54,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-20 13:50:54,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895264844] [2024-11-20 13:50:54,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:50:54,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 13:50:54,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:54,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 13:50:54,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-20 13:50:54,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 351 [2024-11-20 13:50:54,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 331 transitions, 762 flow. Second operand has 18 states, 18 states have (on average 294.94444444444446) internal successors, (5309), 18 states have internal predecessors, (5309), 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) [2024-11-20 13:50:54,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:54,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 351 [2024-11-20 13:50:54,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:54,565 INFO L124 PetriNetUnfolderBase]: 88/1322 cut-off events. [2024-11-20 13:50:54,565 INFO L125 PetriNetUnfolderBase]: For 30/34 co-relation queries the response was YES. [2024-11-20 13:50:54,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 1322 events. 88/1322 cut-off events. For 30/34 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 8475 event pairs, 74 based on Foata normal form. 4/1216 useless extension candidates. Maximal degree in co-relation 1427. Up to 175 conditions per place. [2024-11-20 13:50:54,575 INFO L140 encePairwiseOnDemand]: 345/351 looper letters, 31 selfloop transitions, 21 changer transitions 0/349 dead transitions. [2024-11-20 13:50:54,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 349 transitions, 954 flow [2024-11-20 13:50:54,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 13:50:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-20 13:50:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6209 transitions. [2024-11-20 13:50:54,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.842355175688509 [2024-11-20 13:50:54,587 INFO L175 Difference]: Start difference. First operand has 340 places, 331 transitions, 762 flow. Second operand 21 states and 6209 transitions. [2024-11-20 13:50:54,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 349 transitions, 954 flow [2024-11-20 13:50:54,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 349 transitions, 947 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 13:50:54,595 INFO L231 Difference]: Finished difference. Result has 363 places, 344 transitions, 885 flow [2024-11-20 13:50:54,596 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=885, PETRI_PLACES=363, PETRI_TRANSITIONS=344} [2024-11-20 13:50:54,596 INFO L277 CegarLoopForPetriNet]: 321 programPoint places, 42 predicate places. [2024-11-20 13:50:54,597 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 344 transitions, 885 flow [2024-11-20 13:50:54,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 294.94444444444446) internal successors, (5309), 18 states have internal predecessors, (5309), 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) [2024-11-20 13:50:54,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:54,601 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:54,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 13:50:54,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:54,806 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-20 13:50:54,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:54,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1235979072, now seen corresponding path program 2 times [2024-11-20 13:50:54,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:54,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605987152] [2024-11-20 13:50:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:54,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:50:55,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:55,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605987152] [2024-11-20 13:50:55,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605987152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:55,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417750225] [2024-11-20 13:50:55,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 13:50:55,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:55,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:55,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:55,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 13:50:55,350 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 13:50:55,351 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 13:50:55,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-20 13:50:55,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:55,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-20 13:50:55,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-20 13:50:55,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:55,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-20 13:50:55,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:50:55,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-20 13:50:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-20 13:50:55,516 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:50:55,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417750225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:55,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:50:55,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-11-20 13:50:55,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246005944] [2024-11-20 13:50:55,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:55,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 13:50:55,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:55,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 13:50:55,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-11-20 13:50:55,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 351 [2024-11-20 13:50:55,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 344 transitions, 885 flow. Second operand has 6 states, 6 states have (on average 246.66666666666666) internal successors, (1480), 6 states have internal predecessors, (1480), 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) [2024-11-20 13:50:55,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:55,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 351 [2024-11-20 13:50:55,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:56,777 INFO L124 PetriNetUnfolderBase]: 1363/5193 cut-off events. [2024-11-20 13:50:56,778 INFO L125 PetriNetUnfolderBase]: For 284/284 co-relation queries the response was YES. [2024-11-20 13:50:56,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8382 conditions, 5193 events. 1363/5193 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 45362 event pairs, 1033 based on Foata normal form. 29/4791 useless extension candidates. Maximal degree in co-relation 8174. Up to 2525 conditions per place. [2024-11-20 13:50:56,813 INFO L140 encePairwiseOnDemand]: 324/351 looper letters, 107 selfloop transitions, 92 changer transitions 0/460 dead transitions. [2024-11-20 13:50:56,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 460 transitions, 1537 flow [2024-11-20 13:50:56,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 13:50:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 13:50:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1658 transitions. [2024-11-20 13:50:56,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7872744539411206 [2024-11-20 13:50:56,818 INFO L175 Difference]: Start difference. First operand has 363 places, 344 transitions, 885 flow. Second operand 6 states and 1658 transitions. [2024-11-20 13:50:56,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 460 transitions, 1537 flow [2024-11-20 13:50:56,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 460 transitions, 1513 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-20 13:50:56,833 INFO L231 Difference]: Finished difference. Result has 367 places, 428 transitions, 1469 flow [2024-11-20 13:50:56,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1469, PETRI_PLACES=367, PETRI_TRANSITIONS=428} [2024-11-20 13:50:56,835 INFO L277 CegarLoopForPetriNet]: 321 programPoint places, 46 predicate places. [2024-11-20 13:50:56,835 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 428 transitions, 1469 flow [2024-11-20 13:50:56,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 246.66666666666666) internal successors, (1480), 6 states have internal predecessors, (1480), 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) [2024-11-20 13:50:56,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:56,837 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:56,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 13:50:57,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:57,041 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-20 13:50:57,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:57,041 INFO L85 PathProgramCache]: Analyzing trace with hash 339355473, now seen corresponding path program 1 times [2024-11-20 13:50:57,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:57,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481541173] [2024-11-20 13:50:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:57,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 13:50:57,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481541173] [2024-11-20 13:50:57,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481541173] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:50:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157627158] [2024-11-20 13:50:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:57,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:57,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:50:57,549 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:50:57,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 13:50:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:57,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 13:50:57,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:50:57,750 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 13:50:57,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:50:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 13:50:57,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157627158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:50:57,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:50:57,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-11-20 13:50:57,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636029363] [2024-11-20 13:50:57,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:50:57,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-20 13:50:57,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:57,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 13:50:57,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-20 13:50:58,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 351 [2024-11-20 13:50:58,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 428 transitions, 1469 flow. Second operand has 23 states, 23 states have (on average 295.04347826086956) internal successors, (6786), 23 states have internal predecessors, (6786), 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) [2024-11-20 13:50:58,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:58,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 351 [2024-11-20 13:50:58,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:50:58,669 INFO L124 PetriNetUnfolderBase]: 222/1935 cut-off events. [2024-11-20 13:50:58,669 INFO L125 PetriNetUnfolderBase]: For 496/574 co-relation queries the response was YES. [2024-11-20 13:50:58,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3034 conditions, 1935 events. 222/1935 cut-off events. For 496/574 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 14409 event pairs, 72 based on Foata normal form. 3/1798 useless extension candidates. Maximal degree in co-relation 2746. Up to 232 conditions per place. [2024-11-20 13:50:58,681 INFO L140 encePairwiseOnDemand]: 345/351 looper letters, 34 selfloop transitions, 30 changer transitions 0/445 dead transitions. [2024-11-20 13:50:58,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 445 transitions, 1719 flow [2024-11-20 13:50:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-20 13:50:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-20 13:50:58,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 8857 transitions. [2024-11-20 13:50:58,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8411206077872745 [2024-11-20 13:50:58,696 INFO L175 Difference]: Start difference. First operand has 367 places, 428 transitions, 1469 flow. Second operand 30 states and 8857 transitions. [2024-11-20 13:50:58,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 445 transitions, 1719 flow [2024-11-20 13:50:58,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 445 transitions, 1701 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-20 13:50:58,710 INFO L231 Difference]: Finished difference. Result has 400 places, 438 transitions, 1603 flow [2024-11-20 13:50:58,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1603, PETRI_PLACES=400, PETRI_TRANSITIONS=438} [2024-11-20 13:50:58,712 INFO L277 CegarLoopForPetriNet]: 321 programPoint places, 79 predicate places. [2024-11-20 13:50:58,712 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 438 transitions, 1603 flow [2024-11-20 13:50:58,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 295.04347826086956) internal successors, (6786), 23 states have internal predecessors, (6786), 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) [2024-11-20 13:50:58,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:58,714 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:58,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 13:50:58,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:50:58,919 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2024-11-20 13:50:58,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:58,920 INFO L85 PathProgramCache]: Analyzing trace with hash 198394105, now seen corresponding path program 2 times [2024-11-20 13:50:58,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:58,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506612630] [2024-11-20 13:50:58,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:58,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:50:58,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 13:50:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 13:50:59,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 13:50:59,043 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-20 13:50:59,044 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-20 13:50:59,045 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-20 13:50:59,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-20 13:50:59,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-20 13:50:59,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-20 13:50:59,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-20 13:50:59,046 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-20 13:50:59,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-20 13:50:59,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-20 13:50:59,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-20 13:50:59,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-20 13:50:59,047 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-20 13:50:59,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-20 13:50:59,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-20 13:50:59,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-20 13:50:59,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-20 13:50:59,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-20 13:50:59,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-20 13:50:59,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 13:50:59,049 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1] [2024-11-20 13:50:59,052 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-20 13:50:59,052 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-20 13:50:59,109 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-20 13:50:59,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 466 transitions, 948 flow [2024-11-20 13:50:59,231 INFO L124 PetriNetUnfolderBase]: 80/752 cut-off events. [2024-11-20 13:50:59,232 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-11-20 13:50:59,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 752 events. 80/752 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3383 event pairs, 0 based on Foata normal form. 0/636 useless extension candidates. Maximal degree in co-relation 482. Up to 12 conditions per place. [2024-11-20 13:50:59,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 466 transitions, 948 flow [2024-11-20 13:50:59,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 423 places, 466 transitions, 948 flow [2024-11-20 13:50:59,278 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:50:59,279 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;@6fd3122e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:50:59,279 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-20 13:50:59,291 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 13:50:59,291 INFO L124 PetriNetUnfolderBase]: 8/133 cut-off events. [2024-11-20 13:50:59,291 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 13:50:59,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:50:59,292 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:50:59,292 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-20 13:50:59,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:50:59,292 INFO L85 PathProgramCache]: Analyzing trace with hash 192077871, now seen corresponding path program 1 times [2024-11-20 13:50:59,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:50:59,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137579927] [2024-11-20 13:50:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:50:59,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:50:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:50:59,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:50:59,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:50:59,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137579927] [2024-11-20 13:50:59,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137579927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:50:59,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:50:59,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:50:59,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813213702] [2024-11-20 13:50:59,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:50:59,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:50:59,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:50:59,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:50:59,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:50:59,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 466 [2024-11-20 13:50:59,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 466 transitions, 948 flow. Second operand has 3 states, 3 states have (on average 388.3333333333333) internal successors, (1165), 3 states have internal predecessors, (1165), 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) [2024-11-20 13:50:59,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:50:59,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 466 [2024-11-20 13:50:59,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:51:01,471 INFO L124 PetriNetUnfolderBase]: 1580/11634 cut-off events. [2024-11-20 13:51:01,471 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2024-11-20 13:51:01,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14095 conditions, 11634 events. 1580/11634 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 138987 event pairs, 1464 based on Foata normal form. 2929/13660 useless extension candidates. Maximal degree in co-relation 12445. Up to 2408 conditions per place. [2024-11-20 13:51:01,546 INFO L140 encePairwiseOnDemand]: 421/466 looper letters, 33 selfloop transitions, 2 changer transitions 1/419 dead transitions. [2024-11-20 13:51:01,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 419 transitions, 924 flow [2024-11-20 13:51:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:51:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 13:51:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1240 transitions. [2024-11-20 13:51:01,552 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8869814020028612 [2024-11-20 13:51:01,553 INFO L175 Difference]: Start difference. First operand has 423 places, 466 transitions, 948 flow. Second operand 3 states and 1240 transitions. [2024-11-20 13:51:01,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 419 transitions, 924 flow [2024-11-20 13:51:01,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 419 transitions, 924 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-20 13:51:01,560 INFO L231 Difference]: Finished difference. Result has 420 places, 418 transitions, 862 flow [2024-11-20 13:51:01,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=862, PETRI_PLACES=420, PETRI_TRANSITIONS=418} [2024-11-20 13:51:01,563 INFO L277 CegarLoopForPetriNet]: 423 programPoint places, -3 predicate places. [2024-11-20 13:51:01,563 INFO L471 AbstractCegarLoop]: Abstraction has has 420 places, 418 transitions, 862 flow [2024-11-20 13:51:01,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.3333333333333) internal successors, (1165), 3 states have internal predecessors, (1165), 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) [2024-11-20 13:51:01,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:51:01,564 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:51:01,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 13:51:01,564 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-20 13:51:01,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:51:01,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1765749591, now seen corresponding path program 1 times [2024-11-20 13:51:01,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:51:01,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887843078] [2024-11-20 13:51:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:01,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:51:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:01,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:51:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887843078] [2024-11-20 13:51:01,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887843078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:51:01,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758189858] [2024-11-20 13:51:01,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:01,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:01,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:51:01,814 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:51:01,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 13:51:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:01,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 13:51:01,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:51:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:01,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:51:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:01,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758189858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:51:01,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:51:01,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-20 13:51:01,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163685178] [2024-11-20 13:51:01,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:51:01,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:51:01,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:51:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:51:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:51:02,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 384 out of 466 [2024-11-20 13:51:02,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 418 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 385.8) internal successors, (3858), 10 states have internal predecessors, (3858), 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) [2024-11-20 13:51:02,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:51:02,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 384 of 466 [2024-11-20 13:51:02,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:51:03,706 INFO L124 PetriNetUnfolderBase]: 1580/11640 cut-off events. [2024-11-20 13:51:03,706 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-20 13:51:03,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14120 conditions, 11640 events. 1580/11640 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 139075 event pairs, 1464 based on Foata normal form. 2/10740 useless extension candidates. Maximal degree in co-relation 14024. Up to 2408 conditions per place. [2024-11-20 13:51:03,768 INFO L140 encePairwiseOnDemand]: 460/466 looper letters, 37 selfloop transitions, 9 changer transitions 0/426 dead transitions. [2024-11-20 13:51:03,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 426 transitions, 972 flow [2024-11-20 13:51:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 13:51:03,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-20 13:51:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3504 transitions. [2024-11-20 13:51:03,775 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8354792560801144 [2024-11-20 13:51:03,775 INFO L175 Difference]: Start difference. First operand has 420 places, 418 transitions, 862 flow. Second operand 9 states and 3504 transitions. [2024-11-20 13:51:03,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 426 transitions, 972 flow [2024-11-20 13:51:03,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 426 transitions, 970 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 13:51:03,782 INFO L231 Difference]: Finished difference. Result has 429 places, 424 transitions, 910 flow [2024-11-20 13:51:03,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=910, PETRI_PLACES=429, PETRI_TRANSITIONS=424} [2024-11-20 13:51:03,784 INFO L277 CegarLoopForPetriNet]: 423 programPoint places, 6 predicate places. [2024-11-20 13:51:03,784 INFO L471 AbstractCegarLoop]: Abstraction has has 429 places, 424 transitions, 910 flow [2024-11-20 13:51:03,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 385.8) internal successors, (3858), 10 states have internal predecessors, (3858), 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) [2024-11-20 13:51:03,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:51:03,787 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:51:03,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 13:51:03,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:03,989 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-20 13:51:03,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:51:03,990 INFO L85 PathProgramCache]: Analyzing trace with hash -196495255, now seen corresponding path program 2 times [2024-11-20 13:51:03,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:51:03,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261628579] [2024-11-20 13:51:03,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:03,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:51:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:51:04,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:51:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261628579] [2024-11-20 13:51:04,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261628579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:51:04,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777577112] [2024-11-20 13:51:04,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 13:51:04,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:04,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:51:04,128 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:51:04,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 13:51:04,237 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 13:51:04,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 13:51:04,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 13:51:04,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:51:04,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:51:04,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-20 13:51:04,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:51:04,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-20 13:51:04,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 13:51:04,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-20 13:51:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-20 13:51:04,449 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:51:04,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777577112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:51:04,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:51:04,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-20 13:51:04,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296888070] [2024-11-20 13:51:04,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:51:04,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:51:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:51:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:51:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-20 13:51:04,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 466 [2024-11-20 13:51:04,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 424 transitions, 910 flow. Second operand has 8 states, 8 states have (on average 315.125) internal successors, (2521), 8 states have internal predecessors, (2521), 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) [2024-11-20 13:51:04,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:51:04,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 466 [2024-11-20 13:51:04,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 13:51:31,143 INFO L124 PetriNetUnfolderBase]: 77255/188406 cut-off events. [2024-11-20 13:51:31,143 INFO L125 PetriNetUnfolderBase]: For 296/320 co-relation queries the response was YES. [2024-11-20 13:51:31,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304282 conditions, 188406 events. 77255/188406 cut-off events. For 296/320 co-relation queries the response was YES. Maximal size of possible extension queue 3592. Compared 2522242 event pairs, 70336 based on Foata normal form. 1/173663 useless extension candidates. Maximal degree in co-relation 304157. Up to 110410 conditions per place. [2024-11-20 13:51:32,361 INFO L140 encePairwiseOnDemand]: 454/466 looper letters, 188 selfloop transitions, 11 changer transitions 0/516 dead transitions. [2024-11-20 13:51:32,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 516 transitions, 1492 flow [2024-11-20 13:51:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:51:32,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 13:51:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2713 transitions. [2024-11-20 13:51:32,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7277360515021459 [2024-11-20 13:51:32,367 INFO L175 Difference]: Start difference. First operand has 429 places, 424 transitions, 910 flow. Second operand 8 states and 2713 transitions. [2024-11-20 13:51:32,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 516 transitions, 1492 flow [2024-11-20 13:51:32,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 516 transitions, 1486 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-20 13:51:32,376 INFO L231 Difference]: Finished difference. Result has 440 places, 432 transitions, 975 flow [2024-11-20 13:51:32,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=975, PETRI_PLACES=440, PETRI_TRANSITIONS=432} [2024-11-20 13:51:32,378 INFO L277 CegarLoopForPetriNet]: 423 programPoint places, 17 predicate places. [2024-11-20 13:51:32,378 INFO L471 AbstractCegarLoop]: Abstraction has has 440 places, 432 transitions, 975 flow [2024-11-20 13:51:32,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 315.125) internal successors, (2521), 8 states have internal predecessors, (2521), 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) [2024-11-20 13:51:32,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 13:51:32,379 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:51:32,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 13:51:32,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:32,584 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-11-20 13:51:32,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:51:32,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1724529279, now seen corresponding path program 1 times [2024-11-20 13:51:32,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:51:32,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377885000] [2024-11-20 13:51:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:32,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:51:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:51:32,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:51:32,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377885000] [2024-11-20 13:51:32,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377885000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:51:32,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920793422] [2024-11-20 13:51:32,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:51:32,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:51:32,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:51:32,742 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:51:32,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 13:51:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:51:32,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 13:51:32,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:51:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:51:32,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:51:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 13:51:32,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920793422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:51:32,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:51:32,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-11-20 13:51:32,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367386167] [2024-11-20 13:51:32,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:51:32,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 13:51:33,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:51:33,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 13:51:33,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-11-20 13:51:33,035 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 384 out of 466 [2024-11-20 13:51:33,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 432 transitions, 975 flow. Second operand has 18 states, 18 states have (on average 385.94444444444446) internal successors, (6947), 18 states have internal predecessors, (6947), 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) [2024-11-20 13:51:33,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 13:51:33,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 384 of 466 [2024-11-20 13:51:33,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand