/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 04:13:05,674 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 04:13:05,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 04:13:05,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 04:13:05,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 04:13:05,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 04:13:05,747 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 04:13:05,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 04:13:05,748 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 04:13:05,749 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 04:13:05,749 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 04:13:05,750 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 04:13:05,750 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 04:13:05,750 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 04:13:05,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 04:13:05,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 04:13:05,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 04:13:05,752 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 04:13:05,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 04:13:05,752 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 04:13:05,752 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 04:13:05,753 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 04:13:05,753 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 04:13:05,753 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 04:13:05,754 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 04:13:05,754 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 04:13:05,754 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 04:13:05,754 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:13:05,755 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 04:13:05,755 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 04:13:05,755 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 04:13:05,755 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 04:13:05,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 04:13:05,756 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 04:13:05,756 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 04:13:05,756 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 04:13:06,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 04:13:06,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 04:13:06,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 04:13:06,131 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 04:13:06,136 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 04:13:06,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-25 04:13:07,396 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 04:13:07,651 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 04:13:07,652 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-25 04:13:07,677 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/792b1b24a/a5fd6ae2070f46a2b08199762d6b4b92/FLAGb92ad53ec [2023-08-25 04:13:07,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/792b1b24a/a5fd6ae2070f46a2b08199762d6b4b92 [2023-08-25 04:13:07,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 04:13:07,695 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 04:13:07,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 04:13:07,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 04:13:07,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 04:13:07,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:13:07" (1/1) ... [2023-08-25 04:13:07,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42603c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:07, skipping insertion in model container [2023-08-25 04:13:07,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:13:07" (1/1) ... [2023-08-25 04:13:07,751 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 04:13:08,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:13:08,301 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 04:13:08,329 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:13:08,330 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:13:08,343 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-25 04:13:08,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:13:08,481 INFO L206 MainTranslator]: Completed translation [2023-08-25 04:13:08,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08 WrapperNode [2023-08-25 04:13:08,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 04:13:08,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 04:13:08,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 04:13:08,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 04:13:08,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (1/1) ... [2023-08-25 04:13:08,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (1/1) ... [2023-08-25 04:13:08,586 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 262 [2023-08-25 04:13:08,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 04:13:08,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 04:13:08,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 04:13:08,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 04:13:08,595 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (1/1) ... [2023-08-25 04:13:08,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (1/1) ... [2023-08-25 04:13:08,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (1/1) ... [2023-08-25 04:13:08,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (1/1) ... [2023-08-25 04:13:08,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (1/1) ... [2023-08-25 04:13:08,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (1/1) ... [2023-08-25 04:13:08,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (1/1) ... [2023-08-25 04:13:08,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (1/1) ... [2023-08-25 04:13:08,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 04:13:08,655 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 04:13:08,655 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 04:13:08,655 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 04:13:08,656 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (1/1) ... [2023-08-25 04:13:08,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:13:08,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:08,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 04:13:08,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 04:13:08,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 04:13:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 04:13:08,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 04:13:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 04:13:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 04:13:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 04:13:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 04:13:08,729 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 04:13:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 04:13:08,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 04:13:08,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 04:13:08,732 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 04:13:08,885 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 04:13:08,887 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 04:13:09,254 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 04:13:09,262 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 04:13:09,262 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-25 04:13:09,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:13:09 BoogieIcfgContainer [2023-08-25 04:13:09,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 04:13:09,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 04:13:09,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 04:13:09,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 04:13:09,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 04:13:07" (1/3) ... [2023-08-25 04:13:09,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bef96b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:13:09, skipping insertion in model container [2023-08-25 04:13:09,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:13:08" (2/3) ... [2023-08-25 04:13:09,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bef96b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:13:09, skipping insertion in model container [2023-08-25 04:13:09,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:13:09" (3/3) ... [2023-08-25 04:13:09,272 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2023-08-25 04:13:09,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 04:13:09,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-25 04:13:09,287 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 04:13:09,428 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 04:13:09,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 275 transitions, 558 flow [2023-08-25 04:13:09,639 INFO L124 PetriNetUnfolderBase]: 48/391 cut-off events. [2023-08-25 04:13:09,640 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:13:09,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 391 events. 48/391 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1646 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-08-25 04:13:09,650 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 275 transitions, 558 flow [2023-08-25 04:13:09,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 275 transitions, 558 flow [2023-08-25 04:13:09,667 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:13:09,680 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 275 transitions, 558 flow [2023-08-25 04:13:09,688 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 275 transitions, 558 flow [2023-08-25 04:13:09,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 275 transitions, 558 flow [2023-08-25 04:13:09,747 INFO L124 PetriNetUnfolderBase]: 48/391 cut-off events. [2023-08-25 04:13:09,748 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:13:09,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 391 events. 48/391 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1646 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2023-08-25 04:13:09,764 INFO L119 LiptonReduction]: Number of co-enabled transitions 25864 [2023-08-25 04:13:12,830 INFO L134 LiptonReduction]: Checked pairs total: 113508 [2023-08-25 04:13:12,830 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-08-25 04:13:12,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:13:12,856 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@614a8231, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:13:12,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-25 04:13:12,860 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:13:12,860 INFO L124 PetriNetUnfolderBase]: 9/40 cut-off events. [2023-08-25 04:13:12,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:13:12,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:12,860 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-25 04:13:12,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:13:12,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:12,865 INFO L85 PathProgramCache]: Analyzing trace with hash 341035368, now seen corresponding path program 1 times [2023-08-25 04:13:12,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:12,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650928654] [2023-08-25 04:13:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:12,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:13,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:13,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:13,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650928654] [2023-08-25 04:13:13,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650928654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:13:13,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:13:13,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:13:13,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410446249] [2023-08-25 04:13:13,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:13:13,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:13:13,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:13,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:13:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:13:13,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 458 [2023-08-25 04:13:13,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 134 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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) [2023-08-25 04:13:13,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:13,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 458 [2023-08-25 04:13:13,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:13,522 INFO L124 PetriNetUnfolderBase]: 440/1670 cut-off events. [2023-08-25 04:13:13,522 INFO L125 PetriNetUnfolderBase]: For 3/4 co-relation queries the response was YES. [2023-08-25 04:13:13,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 1670 events. 440/1670 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12290 event pairs, 396 based on Foata normal form. 172/1650 useless extension candidates. Maximal degree in co-relation 2436. Up to 860 conditions per place. [2023-08-25 04:13:13,533 INFO L140 encePairwiseOnDemand]: 434/458 looper letters, 45 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-25 04:13:13,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 114 transitions, 330 flow [2023-08-25 04:13:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:13:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:13:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2023-08-25 04:13:13,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611353711790393 [2023-08-25 04:13:13,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2023-08-25 04:13:13,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2023-08-25 04:13:13,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:13,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2023-08-25 04:13:13,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 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) [2023-08-25 04:13:13,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 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) [2023-08-25 04:13:13,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 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) [2023-08-25 04:13:13,575 INFO L175 Difference]: Start difference. First operand has 112 places, 134 transitions, 276 flow. Second operand 3 states and 771 transitions. [2023-08-25 04:13:13,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 114 transitions, 330 flow [2023-08-25 04:13:13,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 114 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:13:13,583 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 246 flow [2023-08-25 04:13:13,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2023-08-25 04:13:13,589 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2023-08-25 04:13:13,589 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 246 flow [2023-08-25 04:13:13,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 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) [2023-08-25 04:13:13,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:13,590 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-25 04:13:13,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 04:13:13,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:13:13,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:13,593 INFO L85 PathProgramCache]: Analyzing trace with hash -651311836, now seen corresponding path program 1 times [2023-08-25 04:13:13,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:13,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188868925] [2023-08-25 04:13:13,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:13,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:13,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:13,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188868925] [2023-08-25 04:13:13,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188868925] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:13:13,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996196552] [2023-08-25 04:13:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:13,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:13,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:13,723 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) [2023-08-25 04:13:13,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 04:13:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:13,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:13:13,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:13:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:13,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:13:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:13,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996196552] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:13:13,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:13:13,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 04:13:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931156609] [2023-08-25 04:13:13,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:13:13,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 04:13:13,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 04:13:13,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 04:13:13,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 458 [2023-08-25 04:13:13,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 235.57142857142858) internal successors, (1649), 7 states have internal predecessors, (1649), 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) [2023-08-25 04:13:13,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:13,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 458 [2023-08-25 04:13:13,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:14,192 INFO L124 PetriNetUnfolderBase]: 440/1673 cut-off events. [2023-08-25 04:13:14,193 INFO L125 PetriNetUnfolderBase]: For 3/4 co-relation queries the response was YES. [2023-08-25 04:13:14,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2554 conditions, 1673 events. 440/1673 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12315 event pairs, 396 based on Foata normal form. 0/1481 useless extension candidates. Maximal degree in co-relation 2542. Up to 860 conditions per place. [2023-08-25 04:13:14,205 INFO L140 encePairwiseOnDemand]: 455/458 looper letters, 45 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2023-08-25 04:13:14,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 358 flow [2023-08-25 04:13:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 04:13:14,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 04:13:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1457 transitions. [2023-08-25 04:13:14,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5302037845705968 [2023-08-25 04:13:14,209 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1457 transitions. [2023-08-25 04:13:14,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1457 transitions. [2023-08-25 04:13:14,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:14,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1457 transitions. [2023-08-25 04:13:14,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.83333333333334) internal successors, (1457), 6 states have internal predecessors, (1457), 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) [2023-08-25 04:13:14,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 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) [2023-08-25 04:13:14,221 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 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) [2023-08-25 04:13:14,224 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 246 flow. Second operand 6 states and 1457 transitions. [2023-08-25 04:13:14,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 358 flow [2023-08-25 04:13:14,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 117 transitions, 354 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 04:13:14,235 INFO L231 Difference]: Finished difference. Result has 122 places, 117 transitions, 278 flow [2023-08-25 04:13:14,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=122, PETRI_TRANSITIONS=117} [2023-08-25 04:13:14,236 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 10 predicate places. [2023-08-25 04:13:14,236 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 117 transitions, 278 flow [2023-08-25 04:13:14,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 235.57142857142858) internal successors, (1649), 7 states have internal predecessors, (1649), 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) [2023-08-25 04:13:14,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:14,238 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-25 04:13:14,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-25 04:13:14,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:14,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:13:14,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:14,444 INFO L85 PathProgramCache]: Analyzing trace with hash 2027083880, now seen corresponding path program 2 times [2023-08-25 04:13:14,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:14,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961966603] [2023-08-25 04:13:14,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:14,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:14,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:14,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961966603] [2023-08-25 04:13:14,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961966603] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:13:14,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507653833] [2023-08-25 04:13:14,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 04:13:14,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:14,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:14,584 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) [2023-08-25 04:13:14,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 04:13:14,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 04:13:14,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 04:13:14,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 04:13:14,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:13:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:14,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:13:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:13:14,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507653833] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:13:14,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:13:14,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 04:13:14,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109813962] [2023-08-25 04:13:14,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:13:14,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 04:13:14,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:14,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 04:13:14,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-25 04:13:14,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 458 [2023-08-25 04:13:14,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 117 transitions, 278 flow. Second operand has 13 states, 13 states have (on average 235.30769230769232) internal successors, (3059), 13 states have internal predecessors, (3059), 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) [2023-08-25 04:13:14,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:14,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 458 [2023-08-25 04:13:14,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:15,085 INFO L124 PetriNetUnfolderBase]: 440/1679 cut-off events. [2023-08-25 04:13:15,086 INFO L125 PetriNetUnfolderBase]: For 23/24 co-relation queries the response was YES. [2023-08-25 04:13:15,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 1679 events. 440/1679 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12291 event pairs, 396 based on Foata normal form. 6/1494 useless extension candidates. Maximal degree in co-relation 2533. Up to 860 conditions per place. [2023-08-25 04:13:15,093 INFO L140 encePairwiseOnDemand]: 455/458 looper letters, 45 selfloop transitions, 11 changer transitions 0/123 dead transitions. [2023-08-25 04:13:15,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 123 transitions, 426 flow [2023-08-25 04:13:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 04:13:15,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 04:13:15,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2870 transitions. [2023-08-25 04:13:15,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522197962154294 [2023-08-25 04:13:15,101 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2870 transitions. [2023-08-25 04:13:15,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2870 transitions. [2023-08-25 04:13:15,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:15,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2870 transitions. [2023-08-25 04:13:15,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 239.16666666666666) internal successors, (2870), 12 states have internal predecessors, (2870), 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) [2023-08-25 04:13:15,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 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) [2023-08-25 04:13:15,121 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 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) [2023-08-25 04:13:15,122 INFO L175 Difference]: Start difference. First operand has 122 places, 117 transitions, 278 flow. Second operand 12 states and 2870 transitions. [2023-08-25 04:13:15,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 123 transitions, 426 flow [2023-08-25 04:13:15,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 123 transitions, 412 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-25 04:13:15,130 INFO L231 Difference]: Finished difference. Result has 138 places, 123 transitions, 348 flow [2023-08-25 04:13:15,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=348, PETRI_PLACES=138, PETRI_TRANSITIONS=123} [2023-08-25 04:13:15,132 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 26 predicate places. [2023-08-25 04:13:15,132 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 123 transitions, 348 flow [2023-08-25 04:13:15,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 235.30769230769232) internal successors, (3059), 13 states have internal predecessors, (3059), 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) [2023-08-25 04:13:15,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:15,134 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-25 04:13:15,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 04:13:15,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-25 04:13:15,340 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:13:15,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:15,340 INFO L85 PathProgramCache]: Analyzing trace with hash 927096552, now seen corresponding path program 3 times [2023-08-25 04:13:15,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:15,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679139331] [2023-08-25 04:13:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:15,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:13:15,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:13:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:13:15,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:13:15,431 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:13:15,432 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-25 04:13:15,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-25 04:13:15,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-25 04:13:15,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-08-25 04:13:15,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-25 04:13:15,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (14 of 20 remaining) [2023-08-25 04:13:15,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-25 04:13:15,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-25 04:13:15,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-25 04:13:15,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-25 04:13:15,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-25 04:13:15,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (8 of 20 remaining) [2023-08-25 04:13:15,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-25 04:13:15,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-25 04:13:15,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-25 04:13:15,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-25 04:13:15,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-25 04:13:15,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (2 of 20 remaining) [2023-08-25 04:13:15,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-25 04:13:15,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-25 04:13:15,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 04:13:15,441 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-25 04:13:15,443 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:13:15,443 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 04:13:15,520 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 04:13:15,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 383 transitions, 784 flow [2023-08-25 04:13:15,600 INFO L124 PetriNetUnfolderBase]: 80/646 cut-off events. [2023-08-25 04:13:15,600 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 04:13:15,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 646 events. 80/646 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3301 event pairs, 0 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 393. Up to 12 conditions per place. [2023-08-25 04:13:15,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 383 transitions, 784 flow [2023-08-25 04:13:15,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 383 transitions, 784 flow [2023-08-25 04:13:15,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:13:15,619 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 383 transitions, 784 flow [2023-08-25 04:13:15,619 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 383 transitions, 784 flow [2023-08-25 04:13:15,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 383 transitions, 784 flow [2023-08-25 04:13:15,693 INFO L124 PetriNetUnfolderBase]: 80/646 cut-off events. [2023-08-25 04:13:15,694 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 04:13:15,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 646 events. 80/646 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3301 event pairs, 0 based on Foata normal form. 0/528 useless extension candidates. Maximal degree in co-relation 393. Up to 12 conditions per place. [2023-08-25 04:13:15,736 INFO L119 LiptonReduction]: Number of co-enabled transitions 76532 [2023-08-25 04:13:19,593 INFO L134 LiptonReduction]: Checked pairs total: 303528 [2023-08-25 04:13:19,593 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-08-25 04:13:19,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:13:19,596 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@614a8231, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:13:19,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-25 04:13:19,601 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:13:19,601 INFO L124 PetriNetUnfolderBase]: 17/78 cut-off events. [2023-08-25 04:13:19,601 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:13:19,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:19,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:13:19,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:13:19,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:19,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1525762622, now seen corresponding path program 1 times [2023-08-25 04:13:19,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:19,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318674779] [2023-08-25 04:13:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:19,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:19,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:13:19,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:19,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318674779] [2023-08-25 04:13:19,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318674779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:13:19,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:13:19,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:13:19,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94111948] [2023-08-25 04:13:19,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:13:19,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:13:19,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:19,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:13:19,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:13:19,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 637 [2023-08-25 04:13:19,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 196 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2023-08-25 04:13:19,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:19,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 637 [2023-08-25 04:13:19,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:23,590 INFO L124 PetriNetUnfolderBase]: 17119/40364 cut-off events. [2023-08-25 04:13:23,590 INFO L125 PetriNetUnfolderBase]: For 182/233 co-relation queries the response was YES. [2023-08-25 04:13:23,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65243 conditions, 40364 events. 17119/40364 cut-off events. For 182/233 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 450682 event pairs, 15876 based on Foata normal form. 4610/40467 useless extension candidates. Maximal degree in co-relation 29495. Up to 24758 conditions per place. [2023-08-25 04:13:23,965 INFO L140 encePairwiseOnDemand]: 603/637 looper letters, 65 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-08-25 04:13:23,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 484 flow [2023-08-25 04:13:23,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:13:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:13:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1077 transitions. [2023-08-25 04:13:23,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5635792778649922 [2023-08-25 04:13:23,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1077 transitions. [2023-08-25 04:13:23,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1077 transitions. [2023-08-25 04:13:23,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:23,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1077 transitions. [2023-08-25 04:13:23,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 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) [2023-08-25 04:13:23,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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) [2023-08-25 04:13:23,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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) [2023-08-25 04:13:23,976 INFO L175 Difference]: Start difference. First operand has 164 places, 196 transitions, 410 flow. Second operand 3 states and 1077 transitions. [2023-08-25 04:13:23,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 484 flow [2023-08-25 04:13:23,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 166 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:13:23,982 INFO L231 Difference]: Finished difference. Result has 167 places, 166 transitions, 360 flow [2023-08-25 04:13:23,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2023-08-25 04:13:23,984 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 3 predicate places. [2023-08-25 04:13:23,984 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 360 flow [2023-08-25 04:13:23,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 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) [2023-08-25 04:13:23,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:23,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:13:23,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 04:13:23,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:13:23,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:23,985 INFO L85 PathProgramCache]: Analyzing trace with hash -492785093, now seen corresponding path program 1 times [2023-08-25 04:13:23,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:23,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693206001] [2023-08-25 04:13:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:23,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:13:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693206001] [2023-08-25 04:13:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693206001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:13:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576738929] [2023-08-25 04:13:24,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:24,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:24,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:24,046 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) [2023-08-25 04:13:24,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 04:13:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:24,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-25 04:13:24,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:13:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 04:13:24,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 04:13:24,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576738929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:13:24,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 04:13:24,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-25 04:13:24,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213665354] [2023-08-25 04:13:24,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:13:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:13:24,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:24,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:13:24,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 04:13:24,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 637 [2023-08-25 04:13:24,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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) [2023-08-25 04:13:24,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:24,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 637 [2023-08-25 04:13:24,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:27,055 INFO L124 PetriNetUnfolderBase]: 16700/40363 cut-off events. [2023-08-25 04:13:27,055 INFO L125 PetriNetUnfolderBase]: For 158/178 co-relation queries the response was YES. [2023-08-25 04:13:27,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65251 conditions, 40363 events. 16700/40363 cut-off events. For 158/178 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 458662 event pairs, 7596 based on Foata normal form. 0/35867 useless extension candidates. Maximal degree in co-relation 65238. Up to 24720 conditions per place. [2023-08-25 04:13:27,528 INFO L140 encePairwiseOnDemand]: 634/637 looper letters, 85 selfloop transitions, 2 changer transitions 0/186 dead transitions. [2023-08-25 04:13:27,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 186 transitions, 574 flow [2023-08-25 04:13:27,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:13:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:13:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1065 transitions. [2023-08-25 04:13:27,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572998430141287 [2023-08-25 04:13:27,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1065 transitions. [2023-08-25 04:13:27,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1065 transitions. [2023-08-25 04:13:27,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:27,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1065 transitions. [2023-08-25 04:13:27,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 355.0) internal successors, (1065), 3 states have internal predecessors, (1065), 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) [2023-08-25 04:13:27,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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) [2023-08-25 04:13:27,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 637.0) internal successors, (2548), 4 states have internal predecessors, (2548), 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) [2023-08-25 04:13:27,538 INFO L175 Difference]: Start difference. First operand has 167 places, 166 transitions, 360 flow. Second operand 3 states and 1065 transitions. [2023-08-25 04:13:27,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 186 transitions, 574 flow [2023-08-25 04:13:27,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 186 transitions, 570 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 04:13:27,544 INFO L231 Difference]: Finished difference. Result has 169 places, 167 transitions, 368 flow [2023-08-25 04:13:27,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=169, PETRI_TRANSITIONS=167} [2023-08-25 04:13:27,549 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2023-08-25 04:13:27,549 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 167 transitions, 368 flow [2023-08-25 04:13:27,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 328.0) internal successors, (984), 3 states have internal predecessors, (984), 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) [2023-08-25 04:13:27,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:27,550 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-25 04:13:27,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 04:13:27,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:27,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:13:27,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:27,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1914919845, now seen corresponding path program 1 times [2023-08-25 04:13:27,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:27,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653045929] [2023-08-25 04:13:27,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:27,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:27,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:27,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653045929] [2023-08-25 04:13:27,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653045929] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:13:27,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493564836] [2023-08-25 04:13:27,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:27,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:27,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:27,806 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) [2023-08-25 04:13:27,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 04:13:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:27,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:13:27,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:13:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:27,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:13:27,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:27,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493564836] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:13:27,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:13:27,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-25 04:13:27,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939740451] [2023-08-25 04:13:27,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:13:27,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 04:13:27,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:27,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 04:13:27,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 04:13:27,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 637 [2023-08-25 04:13:27,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 167 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 327.6666666666667) internal successors, (1966), 6 states have internal predecessors, (1966), 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) [2023-08-25 04:13:27,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:27,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 637 [2023-08-25 04:13:27,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:31,257 INFO L124 PetriNetUnfolderBase]: 17118/40578 cut-off events. [2023-08-25 04:13:31,257 INFO L125 PetriNetUnfolderBase]: For 940/956 co-relation queries the response was YES. [2023-08-25 04:13:31,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66231 conditions, 40578 events. 17118/40578 cut-off events. For 940/956 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 454631 event pairs, 15876 based on Foata normal form. 3/36348 useless extension candidates. Maximal degree in co-relation 66203. Up to 24740 conditions per place. [2023-08-25 04:13:31,496 INFO L140 encePairwiseOnDemand]: 634/637 looper letters, 66 selfloop transitions, 5 changer transitions 0/170 dead transitions. [2023-08-25 04:13:31,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 522 flow [2023-08-25 04:13:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 04:13:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 04:13:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2029 transitions. [2023-08-25 04:13:31,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308738880167452 [2023-08-25 04:13:31,501 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2029 transitions. [2023-08-25 04:13:31,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2029 transitions. [2023-08-25 04:13:31,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:31,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2029 transitions. [2023-08-25 04:13:31,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.1666666666667) internal successors, (2029), 6 states have internal predecessors, (2029), 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) [2023-08-25 04:13:31,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 637.0) internal successors, (4459), 7 states have internal predecessors, (4459), 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) [2023-08-25 04:13:31,514 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 637.0) internal successors, (4459), 7 states have internal predecessors, (4459), 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) [2023-08-25 04:13:31,514 INFO L175 Difference]: Start difference. First operand has 169 places, 167 transitions, 368 flow. Second operand 6 states and 2029 transitions. [2023-08-25 04:13:31,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 522 flow [2023-08-25 04:13:31,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 04:13:31,518 INFO L231 Difference]: Finished difference. Result has 176 places, 170 transitions, 402 flow [2023-08-25 04:13:31,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2023-08-25 04:13:31,519 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 12 predicate places. [2023-08-25 04:13:31,519 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 402 flow [2023-08-25 04:13:31,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 327.6666666666667) internal successors, (1966), 6 states have internal predecessors, (1966), 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) [2023-08-25 04:13:31,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:31,520 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-25 04:13:31,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 04:13:31,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:31,726 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:13:31,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1056362597, now seen corresponding path program 2 times [2023-08-25 04:13:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:31,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124018] [2023-08-25 04:13:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:31,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:31,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:31,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124018] [2023-08-25 04:13:31,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124018] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:13:31,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599079442] [2023-08-25 04:13:31,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 04:13:31,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:31,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:13:31,830 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) [2023-08-25 04:13:31,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 04:13:31,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 04:13:31,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 04:13:31,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 04:13:31,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:13:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:31,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:13:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:13:32,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599079442] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:13:32,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:13:32,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 04:13:32,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928733237] [2023-08-25 04:13:32,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:13:32,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 04:13:32,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:32,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 04:13:32,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-25 04:13:32,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 637 [2023-08-25 04:13:32,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 402 flow. Second operand has 13 states, 13 states have (on average 327.38461538461536) internal successors, (4256), 13 states have internal predecessors, (4256), 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) [2023-08-25 04:13:32,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:32,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 637 [2023-08-25 04:13:32,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:13:35,225 INFO L124 PetriNetUnfolderBase]: 17118/40584 cut-off events. [2023-08-25 04:13:35,226 INFO L125 PetriNetUnfolderBase]: For 974/990 co-relation queries the response was YES. [2023-08-25 04:13:35,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66251 conditions, 40584 events. 17118/40584 cut-off events. For 974/990 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 454879 event pairs, 15876 based on Foata normal form. 6/36357 useless extension candidates. Maximal degree in co-relation 66191. Up to 24740 conditions per place. [2023-08-25 04:13:35,729 INFO L140 encePairwiseOnDemand]: 634/637 looper letters, 66 selfloop transitions, 11 changer transitions 0/176 dead transitions. [2023-08-25 04:13:35,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 176 transitions, 592 flow [2023-08-25 04:13:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 04:13:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 04:13:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3994 transitions. [2023-08-25 04:13:35,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225013082155939 [2023-08-25 04:13:35,741 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3994 transitions. [2023-08-25 04:13:35,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3994 transitions. [2023-08-25 04:13:35,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:13:35,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3994 transitions. [2023-08-25 04:13:35,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 332.8333333333333) internal successors, (3994), 12 states have internal predecessors, (3994), 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) [2023-08-25 04:13:35,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 637.0) internal successors, (8281), 13 states have internal predecessors, (8281), 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) [2023-08-25 04:13:35,778 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 637.0) internal successors, (8281), 13 states have internal predecessors, (8281), 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) [2023-08-25 04:13:35,778 INFO L175 Difference]: Start difference. First operand has 176 places, 170 transitions, 402 flow. Second operand 12 states and 3994 transitions. [2023-08-25 04:13:35,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 176 transitions, 592 flow [2023-08-25 04:13:35,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 176 transitions, 578 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-25 04:13:35,783 INFO L231 Difference]: Finished difference. Result has 192 places, 176 transitions, 472 flow [2023-08-25 04:13:35,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=637, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=472, PETRI_PLACES=192, PETRI_TRANSITIONS=176} [2023-08-25 04:13:35,785 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 28 predicate places. [2023-08-25 04:13:35,785 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 176 transitions, 472 flow [2023-08-25 04:13:35,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 327.38461538461536) internal successors, (4256), 13 states have internal predecessors, (4256), 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) [2023-08-25 04:13:35,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:35,786 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-25 04:13:35,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 04:13:35,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:13:35,993 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:13:35,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1267791771, now seen corresponding path program 3 times [2023-08-25 04:13:35,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:35,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787974798] [2023-08-25 04:13:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:35,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:13:36,031 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:13:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:13:36,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:13:36,081 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:13:36,081 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2023-08-25 04:13:36,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-08-25 04:13:36,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-08-25 04:13:36,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-08-25 04:13:36,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2023-08-25 04:13:36,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (20 of 26 remaining) [2023-08-25 04:13:36,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-08-25 04:13:36,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-08-25 04:13:36,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-08-25 04:13:36,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-08-25 04:13:36,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2023-08-25 04:13:36,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (14 of 26 remaining) [2023-08-25 04:13:36,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-08-25 04:13:36,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2023-08-25 04:13:36,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-08-25 04:13:36,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2023-08-25 04:13:36,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2023-08-25 04:13:36,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (8 of 26 remaining) [2023-08-25 04:13:36,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2023-08-25 04:13:36,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-08-25 04:13:36,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2023-08-25 04:13:36,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2023-08-25 04:13:36,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-08-25 04:13:36,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (2 of 26 remaining) [2023-08-25 04:13:36,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-08-25 04:13:36,084 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2023-08-25 04:13:36,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 04:13:36,084 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-25 04:13:36,092 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:13:36,093 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 04:13:36,149 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 04:13:36,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 491 transitions, 1012 flow [2023-08-25 04:13:36,299 INFO L124 PetriNetUnfolderBase]: 117/946 cut-off events. [2023-08-25 04:13:36,300 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 04:13:36,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 946 events. 117/946 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5308 event pairs, 1 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 654. Up to 16 conditions per place. [2023-08-25 04:13:36,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 491 transitions, 1012 flow [2023-08-25 04:13:36,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 491 transitions, 1012 flow [2023-08-25 04:13:36,339 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:13:36,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 435 places, 491 transitions, 1012 flow [2023-08-25 04:13:36,340 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 435 places, 491 transitions, 1012 flow [2023-08-25 04:13:36,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 491 transitions, 1012 flow [2023-08-25 04:13:36,487 INFO L124 PetriNetUnfolderBase]: 117/946 cut-off events. [2023-08-25 04:13:36,488 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 04:13:36,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 946 events. 117/946 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5308 event pairs, 1 based on Foata normal form. 0/775 useless extension candidates. Maximal degree in co-relation 654. Up to 16 conditions per place. [2023-08-25 04:13:36,568 INFO L119 LiptonReduction]: Number of co-enabled transitions 149460 [2023-08-25 04:13:41,034 INFO L134 LiptonReduction]: Checked pairs total: 597534 [2023-08-25 04:13:41,034 INFO L136 LiptonReduction]: Total number of compositions: 319 [2023-08-25 04:13:41,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:13:41,036 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@614a8231, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:13:41,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-25 04:13:41,042 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:13:41,042 INFO L124 PetriNetUnfolderBase]: 18/92 cut-off events. [2023-08-25 04:13:41,043 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:13:41,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:13:41,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:13:41,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-25 04:13:41,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:13:41,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1850388350, now seen corresponding path program 1 times [2023-08-25 04:13:41,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:13:41,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960167388] [2023-08-25 04:13:41,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:13:41,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:13:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:13:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:13:41,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:13:41,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960167388] [2023-08-25 04:13:41,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960167388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:13:41,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:13:41,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:13:41,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67006084] [2023-08-25 04:13:41,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:13:41,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:13:41,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:13:41,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:13:41,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:13:41,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 810 [2023-08-25 04:13:41,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 258 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 419.6666666666667) internal successors, (1259), 3 states have internal predecessors, (1259), 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) [2023-08-25 04:13:41,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:13:41,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 810 [2023-08-25 04:13:41,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:15:08,394 INFO L124 PetriNetUnfolderBase]: 493854/935301 cut-off events. [2023-08-25 04:15:08,395 INFO L125 PetriNetUnfolderBase]: For 5517/6112 co-relation queries the response was YES. [2023-08-25 04:15:12,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572603 conditions, 935301 events. 493854/935301 cut-off events. For 5517/6112 co-relation queries the response was YES. Maximal size of possible extension queue 21165. Compared 12611147 event pairs, 463987 based on Foata normal form. 114859/944705 useless extension candidates. Maximal degree in co-relation 328315. Up to 634351 conditions per place. [2023-08-25 04:15:18,172 INFO L140 encePairwiseOnDemand]: 764/810 looper letters, 85 selfloop transitions, 2 changer transitions 0/216 dead transitions. [2023-08-25 04:15:18,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 216 transitions, 636 flow [2023-08-25 04:15:18,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:15:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:15:18,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1385 transitions. [2023-08-25 04:15:18,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5699588477366255 [2023-08-25 04:15:18,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1385 transitions. [2023-08-25 04:15:18,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1385 transitions. [2023-08-25 04:15:18,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:15:18,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1385 transitions. [2023-08-25 04:15:18,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 461.6666666666667) internal successors, (1385), 3 states have internal predecessors, (1385), 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) [2023-08-25 04:15:18,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 810.0) internal successors, (3240), 4 states have internal predecessors, (3240), 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) [2023-08-25 04:15:18,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 810.0) internal successors, (3240), 4 states have internal predecessors, (3240), 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) [2023-08-25 04:15:18,216 INFO L175 Difference]: Start difference. First operand has 214 places, 258 transitions, 546 flow. Second operand 3 states and 1385 transitions. [2023-08-25 04:15:18,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 216 transitions, 636 flow [2023-08-25 04:15:18,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 216 transitions, 636 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:15:18,223 INFO L231 Difference]: Finished difference. Result has 217 places, 216 transitions, 472 flow [2023-08-25 04:15:18,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=810, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=472, PETRI_PLACES=217, PETRI_TRANSITIONS=216} [2023-08-25 04:15:18,237 INFO L281 CegarLoopForPetriNet]: 214 programPoint places, 3 predicate places. [2023-08-25 04:15:18,237 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 216 transitions, 472 flow [2023-08-25 04:15:18,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.6666666666667) internal successors, (1259), 3 states have internal predecessors, (1259), 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) [2023-08-25 04:15:18,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:15:18,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:15:18,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 04:15:18,238 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-25 04:15:18,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:15:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1512232532, now seen corresponding path program 1 times [2023-08-25 04:15:18,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:15:18,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747561128] [2023-08-25 04:15:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:15:18,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:15:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:15:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:15:18,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:15:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747561128] [2023-08-25 04:15:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747561128] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:15:18,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811699196] [2023-08-25 04:15:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:15:18,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:15:18,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:15:18,298 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) [2023-08-25 04:15:18,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 04:15:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:15:18,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-25 04:15:18,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:15:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 04:15:18,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 04:15:18,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811699196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:15:18,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 04:15:18,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-25 04:15:18,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456996403] [2023-08-25 04:15:18,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:15:18,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:15:18,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:15:18,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:15:18,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 04:15:18,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 810 [2023-08-25 04:15:18,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 216 transitions, 472 flow. Second operand has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 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) [2023-08-25 04:15:18,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:15:18,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 810 [2023-08-25 04:15:18,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand