/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/pthread/triangular-longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:20:17,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:20:18,054 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 [2023-08-24 18:20:18,059 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:20:18,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:20:18,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:20:18,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:20:18,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:20:18,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:20:18,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:20:18,099 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:20:18,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:20:18,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:20:18,101 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:20:18,101 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:20:18,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:20:18,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:20:18,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:20:18,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:20:18,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:20:18,102 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:20:18,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:20:18,103 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:20:18,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:20:18,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:20:18,104 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:20:18,104 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:20:18,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:20:18,105 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:20:18,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:20:18,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:20:18,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:20:18,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:20:18,106 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:20:18,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:20:18,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:20:18,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:20:18,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:20:18,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:20:18,458 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:20:18,458 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:20:18,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-24 18:20:19,644 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:20:19,948 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:20:19,949 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-08-24 18:20:19,965 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8222e0609/dcbe63c37c004b5dbeef13db6a708798/FLAGd38bc867e [2023-08-24 18:20:19,983 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8222e0609/dcbe63c37c004b5dbeef13db6a708798 [2023-08-24 18:20:19,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:20:19,988 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:20:19,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:20:19,991 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:20:19,993 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:20:19,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:20:19" (1/1) ... [2023-08-24 18:20:19,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b7ba88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:19, skipping insertion in model container [2023-08-24 18:20:19,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:20:19" (1/1) ... [2023-08-24 18:20:20,043 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:20:20,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:20:20,336 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:20:20,369 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-24 18:20:20,370 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-24 18:20:20,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:20:20,429 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 18:20:20,429 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 18:20:20,436 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:20:20,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20 WrapperNode [2023-08-24 18:20:20,436 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:20:20,437 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:20:20,437 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:20:20,437 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:20:20,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (1/1) ... [2023-08-24 18:20:20,454 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (1/1) ... [2023-08-24 18:20:20,471 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2023-08-24 18:20:20,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:20:20,472 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:20:20,472 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:20:20,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:20:20,477 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (1/1) ... [2023-08-24 18:20:20,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (1/1) ... [2023-08-24 18:20:20,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (1/1) ... [2023-08-24 18:20:20,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (1/1) ... [2023-08-24 18:20:20,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (1/1) ... [2023-08-24 18:20:20,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (1/1) ... [2023-08-24 18:20:20,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (1/1) ... [2023-08-24 18:20:20,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (1/1) ... [2023-08-24 18:20:20,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:20:20,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:20:20,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:20:20,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:20:20,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (1/1) ... [2023-08-24 18:20:20,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:20:20,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:20,526 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) [2023-08-24 18:20:20,539 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 [2023-08-24 18:20:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-24 18:20:20,565 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-24 18:20:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-24 18:20:20,565 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-24 18:20:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:20:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 18:20:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:20:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:20:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:20:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:20:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 18:20:20,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:20:20,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:20:20,568 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:20:20,700 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:20:20,702 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:20:20,829 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:20:20,866 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:20:20,866 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 18:20:20,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:20:20 BoogieIcfgContainer [2023-08-24 18:20:20,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:20:20,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:20:20,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:20:20,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:20:20,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:20:19" (1/3) ... [2023-08-24 18:20:20,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c302eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:20:20, skipping insertion in model container [2023-08-24 18:20:20,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:20" (2/3) ... [2023-08-24 18:20:20,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c302eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:20:20, skipping insertion in model container [2023-08-24 18:20:20,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:20:20" (3/3) ... [2023-08-24 18:20:20,875 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-08-24 18:20:20,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:20:20,890 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-24 18:20:20,891 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:20:20,962 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:20:20,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 166 flow [2023-08-24 18:20:21,075 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-24 18:20:21,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:21,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 6/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-24 18:20:21,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 166 flow [2023-08-24 18:20:21,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:21,088 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:20:21,100 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:21,103 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:21,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:21,132 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-24 18:20:21,132 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:21,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 6/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-24 18:20:21,136 INFO L119 LiptonReduction]: Number of co-enabled transitions 1792 [2023-08-24 18:20:23,297 INFO L134 LiptonReduction]: Checked pairs total: 2074 [2023-08-24 18:20:23,297 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-24 18:20:23,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:20:23,314 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;@2c68cb5c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:20:23,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-24 18:20:23,317 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:20:23,317 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-24 18:20:23,317 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:23,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:23,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:20:23,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:23,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:23,323 INFO L85 PathProgramCache]: Analyzing trace with hash 10943499, now seen corresponding path program 1 times [2023-08-24 18:20:23,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:23,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781163100] [2023-08-24 18:20:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:23,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:23,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:23,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781163100] [2023-08-24 18:20:23,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781163100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:23,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:23,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:20:23,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95207811] [2023-08-24 18:20:23,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:23,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:20:23,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:23,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:20:23,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:20:23,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 156 [2023-08-24 18:20:23,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 44 flow. Second operand has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 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) [2023-08-24 18:20:23,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:23,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 156 [2023-08-24 18:20:23,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:23,589 INFO L124 PetriNetUnfolderBase]: 70/113 cut-off events. [2023-08-24 18:20:23,589 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:20:23,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 113 events. 70/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 256 event pairs, 44 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 228. Up to 114 conditions per place. [2023-08-24 18:20:23,592 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 12 selfloop transitions, 0 changer transitions 1/13 dead transitions. [2023-08-24 18:20:23,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 58 flow [2023-08-24 18:20:23,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:20:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:20:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 141 transitions. [2023-08-24 18:20:23,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2023-08-24 18:20:23,608 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 141 transitions. [2023-08-24 18:20:23,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 141 transitions. [2023-08-24 18:20:23,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:23,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 141 transitions. [2023-08-24 18:20:23,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 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) [2023-08-24 18:20:23,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:23,623 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:20:23,625 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 44 flow. Second operand 2 states and 141 transitions. [2023-08-24 18:20:23,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 58 flow [2023-08-24 18:20:23,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 13 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:20:23,629 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 28 flow [2023-08-24 18:20:23,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=28, PETRI_PLACES=17, PETRI_TRANSITIONS=12} [2023-08-24 18:20:23,634 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -7 predicate places. [2023-08-24 18:20:23,634 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 28 flow [2023-08-24 18:20:23,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.0) internal successors, (126), 2 states have internal predecessors, (126), 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) [2023-08-24 18:20:23,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:23,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 18:20:23,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:20:23,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:23,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1927611490, now seen corresponding path program 1 times [2023-08-24 18:20:23,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:23,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231283877] [2023-08-24 18:20:23,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:23,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:23,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:23,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231283877] [2023-08-24 18:20:23,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231283877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:23,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:23,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:20:23,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025125432] [2023-08-24 18:20:23,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:23,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 18:20:23,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:23,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 18:20:23,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 18:20:23,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:23,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 28 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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) [2023-08-24 18:20:23,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:23,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:23,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:24,021 INFO L124 PetriNetUnfolderBase]: 64/107 cut-off events. [2023-08-24 18:20:24,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:24,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 107 events. 64/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 233 event pairs, 11 based on Foata normal form. 9/87 useless extension candidates. Maximal degree in co-relation 222. Up to 55 conditions per place. [2023-08-24 18:20:24,022 INFO L140 encePairwiseOnDemand]: 152/156 looper letters, 18 selfloop transitions, 4 changer transitions 2/24 dead transitions. [2023-08-24 18:20:24,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 24 transitions, 100 flow [2023-08-24 18:20:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 18:20:24,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 18:20:24,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-08-24 18:20:24,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2023-08-24 18:20:24,025 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-08-24 18:20:24,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-08-24 18:20:24,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:24,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-08-24 18:20:24,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 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) [2023-08-24 18:20:24,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2023-08-24 18:20:24,029 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 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) [2023-08-24 18:20:24,029 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 28 flow. Second operand 4 states and 249 transitions. [2023-08-24 18:20:24,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 24 transitions, 100 flow [2023-08-24 18:20:24,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 24 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:20:24,030 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-08-24 18:20:24,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-24 18:20:24,031 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-08-24 18:20:24,031 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-08-24 18:20:24,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 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) [2023-08-24 18:20:24,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:24,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:24,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:20:24,032 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:24,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:24,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1303192770, now seen corresponding path program 1 times [2023-08-24 18:20:24,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:24,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570594393] [2023-08-24 18:20:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:24,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:24,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:24,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570594393] [2023-08-24 18:20:24,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570594393] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:24,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:24,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:20:24,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658421710] [2023-08-24 18:20:24,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:24,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 18:20:24,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:24,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 18:20:24,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 18:20:24,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:24,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 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) [2023-08-24 18:20:24,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:24,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:24,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:24,273 INFO L124 PetriNetUnfolderBase]: 126/217 cut-off events. [2023-08-24 18:20:24,273 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-24 18:20:24,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 664 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 542. Up to 89 conditions per place. [2023-08-24 18:20:24,275 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-08-24 18:20:24,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 42 transitions, 215 flow [2023-08-24 18:20:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 18:20:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 18:20:24,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 374 transitions. [2023-08-24 18:20:24,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3995726495726496 [2023-08-24 18:20:24,277 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 374 transitions. [2023-08-24 18:20:24,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 374 transitions. [2023-08-24 18:20:24,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:24,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 374 transitions. [2023-08-24 18:20:24,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.333333333333336) internal successors, (374), 6 states have internal predecessors, (374), 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) [2023-08-24 18:20:24,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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) [2023-08-24 18:20:24,281 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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) [2023-08-24 18:20:24,282 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 374 transitions. [2023-08-24 18:20:24,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 42 transitions, 215 flow [2023-08-24 18:20:24,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:20:24,283 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 134 flow [2023-08-24 18:20:24,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-24 18:20:24,284 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2023-08-24 18:20:24,284 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 134 flow [2023-08-24 18:20:24,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 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) [2023-08-24 18:20:24,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:24,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:24,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:20:24,285 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:24,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:24,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1303209510, now seen corresponding path program 2 times [2023-08-24 18:20:24,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:24,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40878425] [2023-08-24 18:20:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:24,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:24,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:24,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40878425] [2023-08-24 18:20:24,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40878425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:24,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:24,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:20:24,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382534662] [2023-08-24 18:20:24,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:24,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 18:20:24,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:24,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 18:20:24,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 18:20:24,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:24,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 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) [2023-08-24 18:20:24,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:24,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:24,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:24,472 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-08-24 18:20:24,472 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2023-08-24 18:20:24,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 199 events. 114/199 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 624 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 644. Up to 84 conditions per place. [2023-08-24 18:20:24,477 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-08-24 18:20:24,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 284 flow [2023-08-24 18:20:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 18:20:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 18:20:24,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2023-08-24 18:20:24,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012820512820513 [2023-08-24 18:20:24,480 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 313 transitions. [2023-08-24 18:20:24,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 313 transitions. [2023-08-24 18:20:24,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:24,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 313 transitions. [2023-08-24 18:20:24,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.6) internal successors, (313), 5 states have internal predecessors, (313), 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) [2023-08-24 18:20:24,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2023-08-24 18:20:24,488 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 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) [2023-08-24 18:20:24,489 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 134 flow. Second operand 5 states and 313 transitions. [2023-08-24 18:20:24,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 284 flow [2023-08-24 18:20:24,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-24 18:20:24,494 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 182 flow [2023-08-24 18:20:24,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-24 18:20:24,496 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2023-08-24 18:20:24,496 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 182 flow [2023-08-24 18:20:24,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 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) [2023-08-24 18:20:24,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:24,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:24,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:20:24,497 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:24,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:24,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1194458659, now seen corresponding path program 1 times [2023-08-24 18:20:24,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:24,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097329340] [2023-08-24 18:20:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:24,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:24,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:24,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097329340] [2023-08-24 18:20:24,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097329340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:24,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:24,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 18:20:24,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202525820] [2023-08-24 18:20:24,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:24,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:20:24,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:24,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:20:24,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:20:24,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:24,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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) [2023-08-24 18:20:24,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:24,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:24,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:24,985 INFO L124 PetriNetUnfolderBase]: 126/219 cut-off events. [2023-08-24 18:20:24,990 INFO L125 PetriNetUnfolderBase]: For 533/533 co-relation queries the response was YES. [2023-08-24 18:20:24,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 219 events. 126/219 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 699 event pairs, 19 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 781. Up to 86 conditions per place. [2023-08-24 18:20:24,992 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 32 selfloop transitions, 16 changer transitions 11/59 dead transitions. [2023-08-24 18:20:24,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 59 transitions, 425 flow [2023-08-24 18:20:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 18:20:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 18:20:24,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 556 transitions. [2023-08-24 18:20:24,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396011396011396 [2023-08-24 18:20:24,994 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 556 transitions. [2023-08-24 18:20:24,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 556 transitions. [2023-08-24 18:20:24,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:24,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 556 transitions. [2023-08-24 18:20:24,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.77777777777778) internal successors, (556), 9 states have internal predecessors, (556), 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) [2023-08-24 18:20:24,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 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) [2023-08-24 18:20:25,000 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 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) [2023-08-24 18:20:25,000 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 182 flow. Second operand 9 states and 556 transitions. [2023-08-24 18:20:25,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 59 transitions, 425 flow [2023-08-24 18:20:25,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 388 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-24 18:20:25,006 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 251 flow [2023-08-24 18:20:25,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-08-24 18:20:25,008 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2023-08-24 18:20:25,008 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 251 flow [2023-08-24 18:20:25,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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) [2023-08-24 18:20:25,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:25,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:25,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:20:25,009 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:25,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:25,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1194528409, now seen corresponding path program 2 times [2023-08-24 18:20:25,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:25,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007851359] [2023-08-24 18:20:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:25,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:25,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:25,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007851359] [2023-08-24 18:20:25,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007851359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:25,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:25,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 18:20:25,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186229656] [2023-08-24 18:20:25,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:25,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:20:25,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:25,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:20:25,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:20:25,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:25,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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) [2023-08-24 18:20:25,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:25,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:25,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:25,207 INFO L124 PetriNetUnfolderBase]: 162/283 cut-off events. [2023-08-24 18:20:25,207 INFO L125 PetriNetUnfolderBase]: For 829/829 co-relation queries the response was YES. [2023-08-24 18:20:25,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 283 events. 162/283 cut-off events. For 829/829 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 967 event pairs, 18 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1075. Up to 77 conditions per place. [2023-08-24 18:20:25,209 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 38 selfloop transitions, 20 changer transitions 3/61 dead transitions. [2023-08-24 18:20:25,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 497 flow [2023-08-24 18:20:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 18:20:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 18:20:25,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 494 transitions. [2023-08-24 18:20:25,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2023-08-24 18:20:25,211 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 494 transitions. [2023-08-24 18:20:25,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 494 transitions. [2023-08-24 18:20:25,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:25,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 494 transitions. [2023-08-24 18:20:25,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.75) internal successors, (494), 8 states have internal predecessors, (494), 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) [2023-08-24 18:20:25,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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) [2023-08-24 18:20:25,215 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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) [2023-08-24 18:20:25,215 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 251 flow. Second operand 8 states and 494 transitions. [2023-08-24 18:20:25,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 497 flow [2023-08-24 18:20:25,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 467 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-24 18:20:25,219 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 344 flow [2023-08-24 18:20:25,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-08-24 18:20:25,220 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 28 predicate places. [2023-08-24 18:20:25,220 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 344 flow [2023-08-24 18:20:25,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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) [2023-08-24 18:20:25,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:25,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:25,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:20:25,221 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:25,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1229400619, now seen corresponding path program 3 times [2023-08-24 18:20:25,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:25,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364971084] [2023-08-24 18:20:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:25,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:25,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364971084] [2023-08-24 18:20:25,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364971084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:25,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:25,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 18:20:25,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281717388] [2023-08-24 18:20:25,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:25,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:20:25,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:25,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:20:25,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:20:25,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:25,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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) [2023-08-24 18:20:25,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:25,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:25,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:25,463 INFO L124 PetriNetUnfolderBase]: 158/275 cut-off events. [2023-08-24 18:20:25,463 INFO L125 PetriNetUnfolderBase]: For 1250/1250 co-relation queries the response was YES. [2023-08-24 18:20:25,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 275 events. 158/275 cut-off events. For 1250/1250 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 923 event pairs, 18 based on Foata normal form. 8/283 useless extension candidates. Maximal degree in co-relation 1234. Up to 65 conditions per place. [2023-08-24 18:20:25,465 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 28 selfloop transitions, 25 changer transitions 10/63 dead transitions. [2023-08-24 18:20:25,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 616 flow [2023-08-24 18:20:25,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 18:20:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 18:20:25,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 493 transitions. [2023-08-24 18:20:25,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39503205128205127 [2023-08-24 18:20:25,467 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 493 transitions. [2023-08-24 18:20:25,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 493 transitions. [2023-08-24 18:20:25,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:25,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 493 transitions. [2023-08-24 18:20:25,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 61.625) internal successors, (493), 8 states have internal predecessors, (493), 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) [2023-08-24 18:20:25,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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) [2023-08-24 18:20:25,471 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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) [2023-08-24 18:20:25,471 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 344 flow. Second operand 8 states and 493 transitions. [2023-08-24 18:20:25,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 616 flow [2023-08-24 18:20:25,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 581 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-24 18:20:25,478 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 437 flow [2023-08-24 18:20:25,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=437, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-08-24 18:20:25,479 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2023-08-24 18:20:25,479 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 437 flow [2023-08-24 18:20:25,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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) [2023-08-24 18:20:25,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:25,479 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:25,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 18:20:25,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:25,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:25,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1643179524, now seen corresponding path program 4 times [2023-08-24 18:20:25,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:25,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124035841] [2023-08-24 18:20:25,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:25,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:25,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:25,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124035841] [2023-08-24 18:20:25,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124035841] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:25,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437442539] [2023-08-24 18:20:25,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 18:20:25,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:25,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:25,697 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) [2023-08-24 18:20:25,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 18:20:25,769 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 18:20:25,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:25,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 18:20:25,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:25,849 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:25,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437442539] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:25,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:25,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-24 18:20:25,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727409774] [2023-08-24 18:20:25,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:25,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 18:20:25,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:25,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 18:20:25,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-24 18:20:25,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:25,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 437 flow. Second operand has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 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) [2023-08-24 18:20:25,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:25,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:25,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:26,185 INFO L124 PetriNetUnfolderBase]: 182/323 cut-off events. [2023-08-24 18:20:26,185 INFO L125 PetriNetUnfolderBase]: For 2474/2474 co-relation queries the response was YES. [2023-08-24 18:20:26,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1606 conditions, 323 events. 182/323 cut-off events. For 2474/2474 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1092 event pairs, 41 based on Foata normal form. 24/347 useless extension candidates. Maximal degree in co-relation 1583. Up to 181 conditions per place. [2023-08-24 18:20:26,187 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 45 selfloop transitions, 17 changer transitions 19/81 dead transitions. [2023-08-24 18:20:26,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 81 transitions, 873 flow [2023-08-24 18:20:26,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 18:20:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 18:20:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 737 transitions. [2023-08-24 18:20:26,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936965811965812 [2023-08-24 18:20:26,190 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 737 transitions. [2023-08-24 18:20:26,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 737 transitions. [2023-08-24 18:20:26,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:26,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 737 transitions. [2023-08-24 18:20:26,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 61.416666666666664) internal successors, (737), 12 states have internal predecessors, (737), 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) [2023-08-24 18:20:26,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 156.0) internal successors, (2028), 13 states have internal predecessors, (2028), 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) [2023-08-24 18:20:26,196 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 156.0) internal successors, (2028), 13 states have internal predecessors, (2028), 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) [2023-08-24 18:20:26,196 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 437 flow. Second operand 12 states and 737 transitions. [2023-08-24 18:20:26,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 81 transitions, 873 flow [2023-08-24 18:20:26,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 820 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-24 18:20:26,204 INFO L231 Difference]: Finished difference. Result has 71 places, 47 transitions, 544 flow [2023-08-24 18:20:26,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=544, PETRI_PLACES=71, PETRI_TRANSITIONS=47} [2023-08-24 18:20:26,205 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 47 predicate places. [2023-08-24 18:20:26,205 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 47 transitions, 544 flow [2023-08-24 18:20:26,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 57.916666666666664) internal successors, (695), 12 states have internal predecessors, (695), 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) [2023-08-24 18:20:26,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:26,205 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:26,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:26,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:26,412 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:26,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1627092384, now seen corresponding path program 5 times [2023-08-24 18:20:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:26,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725030532] [2023-08-24 18:20:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:26,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:26,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:26,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725030532] [2023-08-24 18:20:26,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725030532] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:26,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266116909] [2023-08-24 18:20:26,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 18:20:26,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:26,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:26,516 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) [2023-08-24 18:20:26,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 18:20:26,624 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 18:20:26,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:26,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 18:20:26,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:26,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:26,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:26,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266116909] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:26,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:26,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 18:20:26,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648289155] [2023-08-24 18:20:26,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:26,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 18:20:26,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:26,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 18:20:26,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-24 18:20:26,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:26,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 47 transitions, 544 flow. Second operand has 13 states, 13 states have (on average 57.84615384615385) internal successors, (752), 13 states have internal predecessors, (752), 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) [2023-08-24 18:20:26,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:26,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:26,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:27,139 INFO L124 PetriNetUnfolderBase]: 244/439 cut-off events. [2023-08-24 18:20:27,139 INFO L125 PetriNetUnfolderBase]: For 6692/6692 co-relation queries the response was YES. [2023-08-24 18:20:27,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 439 events. 244/439 cut-off events. For 6692/6692 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1683 event pairs, 30 based on Foata normal form. 28/467 useless extension candidates. Maximal degree in co-relation 2485. Up to 128 conditions per place. [2023-08-24 18:20:27,143 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 46 selfloop transitions, 42 changer transitions 29/117 dead transitions. [2023-08-24 18:20:27,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 117 transitions, 1405 flow [2023-08-24 18:20:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 18:20:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 18:20:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1105 transitions. [2023-08-24 18:20:27,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39351851851851855 [2023-08-24 18:20:27,147 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1105 transitions. [2023-08-24 18:20:27,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1105 transitions. [2023-08-24 18:20:27,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:27,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1105 transitions. [2023-08-24 18:20:27,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 61.388888888888886) internal successors, (1105), 18 states have internal predecessors, (1105), 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) [2023-08-24 18:20:27,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 156.0) internal successors, (2964), 19 states have internal predecessors, (2964), 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) [2023-08-24 18:20:27,155 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 156.0) internal successors, (2964), 19 states have internal predecessors, (2964), 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) [2023-08-24 18:20:27,155 INFO L175 Difference]: Start difference. First operand has 71 places, 47 transitions, 544 flow. Second operand 18 states and 1105 transitions. [2023-08-24 18:20:27,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 117 transitions, 1405 flow [2023-08-24 18:20:27,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 117 transitions, 1265 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-08-24 18:20:27,168 INFO L231 Difference]: Finished difference. Result has 93 places, 64 transitions, 898 flow [2023-08-24 18:20:27,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=898, PETRI_PLACES=93, PETRI_TRANSITIONS=64} [2023-08-24 18:20:27,169 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 69 predicate places. [2023-08-24 18:20:27,169 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 64 transitions, 898 flow [2023-08-24 18:20:27,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 57.84615384615385) internal successors, (752), 13 states have internal predecessors, (752), 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) [2023-08-24 18:20:27,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:27,170 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:27,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 18:20:27,375 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,SelfDestructingSolverStorable8 [2023-08-24 18:20:27,375 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:27,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:27,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1185544892, now seen corresponding path program 6 times [2023-08-24 18:20:27,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:27,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882074067] [2023-08-24 18:20:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:27,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:27,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882074067] [2023-08-24 18:20:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882074067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697664216] [2023-08-24 18:20:27,472 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 18:20:27,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:27,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:27,473 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) [2023-08-24 18:20:27,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 18:20:27,545 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-24 18:20:27,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:27,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 18:20:27,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:27,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:27,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697664216] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:27,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:27,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-24 18:20:27,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739482651] [2023-08-24 18:20:27,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:27,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 18:20:27,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:27,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 18:20:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-24 18:20:27,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:27,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 64 transitions, 898 flow. Second operand has 14 states, 14 states have (on average 57.714285714285715) internal successors, (808), 14 states have internal predecessors, (808), 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) [2023-08-24 18:20:27,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:27,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:27,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:28,009 INFO L124 PetriNetUnfolderBase]: 328/599 cut-off events. [2023-08-24 18:20:28,009 INFO L125 PetriNetUnfolderBase]: For 14932/14932 co-relation queries the response was YES. [2023-08-24 18:20:28,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4414 conditions, 599 events. 328/599 cut-off events. For 14932/14932 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2517 event pairs, 23 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 4375. Up to 204 conditions per place. [2023-08-24 18:20:28,015 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 56 selfloop transitions, 58 changer transitions 19/133 dead transitions. [2023-08-24 18:20:28,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 133 transitions, 2133 flow [2023-08-24 18:20:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 18:20:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 18:20:28,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1100 transitions. [2023-08-24 18:20:28,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39173789173789175 [2023-08-24 18:20:28,018 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1100 transitions. [2023-08-24 18:20:28,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1100 transitions. [2023-08-24 18:20:28,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:28,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1100 transitions. [2023-08-24 18:20:28,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 61.111111111111114) internal successors, (1100), 18 states have internal predecessors, (1100), 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) [2023-08-24 18:20:28,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 156.0) internal successors, (2964), 19 states have internal predecessors, (2964), 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) [2023-08-24 18:20:28,026 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 156.0) internal successors, (2964), 19 states have internal predecessors, (2964), 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) [2023-08-24 18:20:28,027 INFO L175 Difference]: Start difference. First operand has 93 places, 64 transitions, 898 flow. Second operand 18 states and 1100 transitions. [2023-08-24 18:20:28,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 133 transitions, 2133 flow [2023-08-24 18:20:28,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 133 transitions, 1847 flow, removed 129 selfloop flow, removed 7 redundant places. [2023-08-24 18:20:28,054 INFO L231 Difference]: Finished difference. Result has 111 places, 80 transitions, 1254 flow [2023-08-24 18:20:28,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1254, PETRI_PLACES=111, PETRI_TRANSITIONS=80} [2023-08-24 18:20:28,054 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2023-08-24 18:20:28,055 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 80 transitions, 1254 flow [2023-08-24 18:20:28,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 57.714285714285715) internal successors, (808), 14 states have internal predecessors, (808), 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) [2023-08-24 18:20:28,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:28,055 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:28,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:28,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:28,261 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:28,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash 338622504, now seen corresponding path program 7 times [2023-08-24 18:20:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:28,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012745119] [2023-08-24 18:20:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:28,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:28,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012745119] [2023-08-24 18:20:28,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012745119] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:28,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504308959] [2023-08-24 18:20:28,386 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 18:20:28,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:28,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:28,387 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) [2023-08-24 18:20:28,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 18:20:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:28,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 18:20:28,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:28,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:28,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:28,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504308959] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:28,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:28,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-24 18:20:28,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916224157] [2023-08-24 18:20:28,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:28,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 18:20:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:28,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 18:20:28,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-24 18:20:28,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:28,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 80 transitions, 1254 flow. Second operand has 15 states, 15 states have (on average 57.733333333333334) internal successors, (866), 15 states have internal predecessors, (866), 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) [2023-08-24 18:20:28,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:28,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:28,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:29,084 INFO L124 PetriNetUnfolderBase]: 380/691 cut-off events. [2023-08-24 18:20:29,084 INFO L125 PetriNetUnfolderBase]: For 26652/26652 co-relation queries the response was YES. [2023-08-24 18:20:29,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5752 conditions, 691 events. 380/691 cut-off events. For 26652/26652 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2959 event pairs, 12 based on Foata normal form. 24/715 useless extension candidates. Maximal degree in co-relation 5705. Up to 235 conditions per place. [2023-08-24 18:20:29,092 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 45 selfloop transitions, 82 changer transitions 36/163 dead transitions. [2023-08-24 18:20:29,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 163 transitions, 2912 flow [2023-08-24 18:20:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-24 18:20:29,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-24 18:20:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1287 transitions. [2023-08-24 18:20:29,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2023-08-24 18:20:29,097 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1287 transitions. [2023-08-24 18:20:29,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1287 transitions. [2023-08-24 18:20:29,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:29,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1287 transitions. [2023-08-24 18:20:29,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 61.285714285714285) internal successors, (1287), 21 states have internal predecessors, (1287), 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) [2023-08-24 18:20:29,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 156.0) internal successors, (3432), 22 states have internal predecessors, (3432), 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) [2023-08-24 18:20:29,105 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 156.0) internal successors, (3432), 22 states have internal predecessors, (3432), 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) [2023-08-24 18:20:29,105 INFO L175 Difference]: Start difference. First operand has 111 places, 80 transitions, 1254 flow. Second operand 21 states and 1287 transitions. [2023-08-24 18:20:29,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 163 transitions, 2912 flow [2023-08-24 18:20:29,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 163 transitions, 2352 flow, removed 245 selfloop flow, removed 12 redundant places. [2023-08-24 18:20:29,146 INFO L231 Difference]: Finished difference. Result has 129 places, 99 transitions, 1662 flow [2023-08-24 18:20:29,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1662, PETRI_PLACES=129, PETRI_TRANSITIONS=99} [2023-08-24 18:20:29,147 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 105 predicate places. [2023-08-24 18:20:29,147 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 99 transitions, 1662 flow [2023-08-24 18:20:29,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 57.733333333333334) internal successors, (866), 15 states have internal predecessors, (866), 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) [2023-08-24 18:20:29,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:29,148 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:29,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-24 18:20:29,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:29,353 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:29,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:29,353 INFO L85 PathProgramCache]: Analyzing trace with hash -454733236, now seen corresponding path program 8 times [2023-08-24 18:20:29,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:29,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214304994] [2023-08-24 18:20:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:29,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:29,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:29,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214304994] [2023-08-24 18:20:29,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214304994] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:29,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409956315] [2023-08-24 18:20:29,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 18:20:29,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:29,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:29,566 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) [2023-08-24 18:20:29,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 18:20:29,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 18:20:29,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:29,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-24 18:20:29,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:29,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:29,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409956315] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:29,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:29,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-24 18:20:29,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450123456] [2023-08-24 18:20:29,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:29,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-24 18:20:29,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:29,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-24 18:20:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-08-24 18:20:29,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:29,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 99 transitions, 1662 flow. Second operand has 22 states, 22 states have (on average 57.5) internal successors, (1265), 22 states have internal predecessors, (1265), 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) [2023-08-24 18:20:29,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:29,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:29,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:30,676 INFO L124 PetriNetUnfolderBase]: 528/939 cut-off events. [2023-08-24 18:20:30,676 INFO L125 PetriNetUnfolderBase]: For 41797/41797 co-relation queries the response was YES. [2023-08-24 18:20:30,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8587 conditions, 939 events. 528/939 cut-off events. For 41797/41797 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3983 event pairs, 15 based on Foata normal form. 36/975 useless extension candidates. Maximal degree in co-relation 8533. Up to 327 conditions per place. [2023-08-24 18:20:30,687 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 60 selfloop transitions, 119 changer transitions 66/245 dead transitions. [2023-08-24 18:20:30,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 245 transitions, 4870 flow [2023-08-24 18:20:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-24 18:20:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-24 18:20:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2198 transitions. [2023-08-24 18:20:30,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39138176638176636 [2023-08-24 18:20:30,692 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2198 transitions. [2023-08-24 18:20:30,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2198 transitions. [2023-08-24 18:20:30,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:30,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2198 transitions. [2023-08-24 18:20:30,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 61.05555555555556) internal successors, (2198), 36 states have internal predecessors, (2198), 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) [2023-08-24 18:20:30,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 156.0) internal successors, (5772), 37 states have internal predecessors, (5772), 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) [2023-08-24 18:20:30,709 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 156.0) internal successors, (5772), 37 states have internal predecessors, (5772), 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) [2023-08-24 18:20:30,709 INFO L175 Difference]: Start difference. First operand has 129 places, 99 transitions, 1662 flow. Second operand 36 states and 2198 transitions. [2023-08-24 18:20:30,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 245 transitions, 4870 flow [2023-08-24 18:20:30,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 245 transitions, 4266 flow, removed 265 selfloop flow, removed 14 redundant places. [2023-08-24 18:20:30,818 INFO L231 Difference]: Finished difference. Result has 168 places, 136 transitions, 2706 flow [2023-08-24 18:20:30,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2706, PETRI_PLACES=168, PETRI_TRANSITIONS=136} [2023-08-24 18:20:30,819 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 144 predicate places. [2023-08-24 18:20:30,819 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 136 transitions, 2706 flow [2023-08-24 18:20:30,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 57.5) internal successors, (1265), 22 states have internal predecessors, (1265), 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) [2023-08-24 18:20:30,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:30,820 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:30,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:31,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-24 18:20:31,025 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:31,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:31,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2053048363, now seen corresponding path program 9 times [2023-08-24 18:20:31,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:31,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925313855] [2023-08-24 18:20:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:31,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:31,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:31,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925313855] [2023-08-24 18:20:31,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925313855] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:31,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648251074] [2023-08-24 18:20:31,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 18:20:31,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:31,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:31,397 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) [2023-08-24 18:20:31,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 18:20:31,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-24 18:20:31,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:31,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 18:20:31,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:31,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:31,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648251074] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:31,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:31,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-08-24 18:20:31,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550212209] [2023-08-24 18:20:31,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:31,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 18:20:31,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:31,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 18:20:31,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 18:20:31,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:31,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 136 transitions, 2706 flow. Second operand has 34 states, 34 states have (on average 57.3235294117647) internal successors, (1949), 34 states have internal predecessors, (1949), 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) [2023-08-24 18:20:31,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:31,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:31,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:32,781 INFO L124 PetriNetUnfolderBase]: 664/1211 cut-off events. [2023-08-24 18:20:32,782 INFO L125 PetriNetUnfolderBase]: For 89174/89174 co-relation queries the response was YES. [2023-08-24 18:20:32,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13814 conditions, 1211 events. 664/1211 cut-off events. For 89174/89174 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5480 event pairs, 103 based on Foata normal form. 24/1235 useless extension candidates. Maximal degree in co-relation 13746. Up to 463 conditions per place. [2023-08-24 18:20:32,797 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 113 selfloop transitions, 98 changer transitions 71/282 dead transitions. [2023-08-24 18:20:32,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 282 transitions, 6933 flow [2023-08-24 18:20:32,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-24 18:20:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-24 18:20:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2299 transitions. [2023-08-24 18:20:32,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38782051282051283 [2023-08-24 18:20:32,801 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2299 transitions. [2023-08-24 18:20:32,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2299 transitions. [2023-08-24 18:20:32,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:32,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2299 transitions. [2023-08-24 18:20:32,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 60.5) internal successors, (2299), 38 states have internal predecessors, (2299), 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) [2023-08-24 18:20:32,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 156.0) internal successors, (6084), 39 states have internal predecessors, (6084), 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) [2023-08-24 18:20:32,812 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 156.0) internal successors, (6084), 39 states have internal predecessors, (6084), 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) [2023-08-24 18:20:32,812 INFO L175 Difference]: Start difference. First operand has 168 places, 136 transitions, 2706 flow. Second operand 38 states and 2299 transitions. [2023-08-24 18:20:32,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 282 transitions, 6933 flow [2023-08-24 18:20:32,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 282 transitions, 5347 flow, removed 762 selfloop flow, removed 13 redundant places. [2023-08-24 18:20:32,966 INFO L231 Difference]: Finished difference. Result has 200 places, 170 transitions, 2977 flow [2023-08-24 18:20:32,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2977, PETRI_PLACES=200, PETRI_TRANSITIONS=170} [2023-08-24 18:20:32,967 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 176 predicate places. [2023-08-24 18:20:32,967 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 170 transitions, 2977 flow [2023-08-24 18:20:32,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 57.3235294117647) internal successors, (1949), 34 states have internal predecessors, (1949), 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) [2023-08-24 18:20:32,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:32,968 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:32,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:33,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:33,174 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:33,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:33,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1926698381, now seen corresponding path program 10 times [2023-08-24 18:20:33,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:33,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000158085] [2023-08-24 18:20:33,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:33,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:33,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:33,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000158085] [2023-08-24 18:20:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000158085] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:33,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104250651] [2023-08-24 18:20:33,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 18:20:33,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:33,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:33,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:20:33,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 18:20:33,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 18:20:33,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:33,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 18:20:33,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:33,577 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:33,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:33,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104250651] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:33,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:33,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-08-24 18:20:33,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062047266] [2023-08-24 18:20:33,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:33,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 18:20:33,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:33,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 18:20:33,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=926, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 18:20:33,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:33,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 170 transitions, 2977 flow. Second operand has 34 states, 34 states have (on average 57.3235294117647) internal successors, (1949), 34 states have internal predecessors, (1949), 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) [2023-08-24 18:20:33,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:33,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:33,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:34,916 INFO L124 PetriNetUnfolderBase]: 856/1587 cut-off events. [2023-08-24 18:20:34,916 INFO L125 PetriNetUnfolderBase]: For 148786/148786 co-relation queries the response was YES. [2023-08-24 18:20:34,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17847 conditions, 1587 events. 856/1587 cut-off events. For 148786/148786 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7758 event pairs, 44 based on Foata normal form. 32/1619 useless extension candidates. Maximal degree in co-relation 17775. Up to 647 conditions per place. [2023-08-24 18:20:34,936 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 84 selfloop transitions, 180 changer transitions 79/343 dead transitions. [2023-08-24 18:20:34,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 343 transitions, 7690 flow [2023-08-24 18:20:34,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-24 18:20:34,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-24 18:20:34,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2546 transitions. [2023-08-24 18:20:34,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3885836385836386 [2023-08-24 18:20:34,940 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2546 transitions. [2023-08-24 18:20:34,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2546 transitions. [2023-08-24 18:20:34,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:34,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2546 transitions. [2023-08-24 18:20:34,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 60.61904761904762) internal successors, (2546), 42 states have internal predecessors, (2546), 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) [2023-08-24 18:20:34,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 156.0) internal successors, (6708), 43 states have internal predecessors, (6708), 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) [2023-08-24 18:20:34,951 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 156.0) internal successors, (6708), 43 states have internal predecessors, (6708), 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) [2023-08-24 18:20:34,951 INFO L175 Difference]: Start difference. First operand has 200 places, 170 transitions, 2977 flow. Second operand 42 states and 2546 transitions. [2023-08-24 18:20:34,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 343 transitions, 7690 flow [2023-08-24 18:20:35,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 343 transitions, 7046 flow, removed 257 selfloop flow, removed 17 redundant places. [2023-08-24 18:20:35,244 INFO L231 Difference]: Finished difference. Result has 236 places, 220 transitions, 4308 flow [2023-08-24 18:20:35,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=4308, PETRI_PLACES=236, PETRI_TRANSITIONS=220} [2023-08-24 18:20:35,245 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2023-08-24 18:20:35,245 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 220 transitions, 4308 flow [2023-08-24 18:20:35,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 57.3235294117647) internal successors, (1949), 34 states have internal predecessors, (1949), 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) [2023-08-24 18:20:35,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:35,246 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:35,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:35,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:35,454 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:35,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2060171483, now seen corresponding path program 11 times [2023-08-24 18:20:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:35,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633722836] [2023-08-24 18:20:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:35,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:35,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633722836] [2023-08-24 18:20:35,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633722836] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:35,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949969558] [2023-08-24 18:20:35,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 18:20:35,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:35,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:35,694 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:20:35,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 18:20:35,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-08-24 18:20:35,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:35,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 18:20:35,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:35,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:36,098 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:36,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949969558] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:36,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:36,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-08-24 18:20:36,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436084487] [2023-08-24 18:20:36,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:36,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-24 18:20:36,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:36,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-24 18:20:36,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190 [2023-08-24 18:20:36,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:36,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 220 transitions, 4308 flow. Second operand has 35 states, 35 states have (on average 57.34285714285714) internal successors, (2007), 35 states have internal predecessors, (2007), 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) [2023-08-24 18:20:36,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:36,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:36,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:37,565 INFO L124 PetriNetUnfolderBase]: 988/1831 cut-off events. [2023-08-24 18:20:37,565 INFO L125 PetriNetUnfolderBase]: For 239783/239783 co-relation queries the response was YES. [2023-08-24 18:20:37,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22965 conditions, 1831 events. 988/1831 cut-off events. For 239783/239783 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9260 event pairs, 18 based on Foata normal form. 36/1867 useless extension candidates. Maximal degree in co-relation 22880. Up to 759 conditions per place. [2023-08-24 18:20:37,590 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 75 selfloop transitions, 230 changer transitions 81/386 dead transitions. [2023-08-24 18:20:37,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 386 transitions, 9304 flow [2023-08-24 18:20:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-24 18:20:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-24 18:20:37,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2677 transitions. [2023-08-24 18:20:37,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3900058275058275 [2023-08-24 18:20:37,595 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2677 transitions. [2023-08-24 18:20:37,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2677 transitions. [2023-08-24 18:20:37,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:37,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2677 transitions. [2023-08-24 18:20:37,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 60.84090909090909) internal successors, (2677), 44 states have internal predecessors, (2677), 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) [2023-08-24 18:20:37,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 156.0) internal successors, (7020), 45 states have internal predecessors, (7020), 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) [2023-08-24 18:20:37,608 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 156.0) internal successors, (7020), 45 states have internal predecessors, (7020), 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) [2023-08-24 18:20:37,608 INFO L175 Difference]: Start difference. First operand has 236 places, 220 transitions, 4308 flow. Second operand 44 states and 2677 transitions. [2023-08-24 18:20:37,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 386 transitions, 9304 flow [2023-08-24 18:20:37,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 386 transitions, 8382 flow, removed 374 selfloop flow, removed 16 redundant places. [2023-08-24 18:20:37,933 INFO L231 Difference]: Finished difference. Result has 277 places, 255 transitions, 5310 flow [2023-08-24 18:20:37,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3414, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5310, PETRI_PLACES=277, PETRI_TRANSITIONS=255} [2023-08-24 18:20:37,934 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 253 predicate places. [2023-08-24 18:20:37,934 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 255 transitions, 5310 flow [2023-08-24 18:20:37,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 57.34285714285714) internal successors, (2007), 35 states have internal predecessors, (2007), 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) [2023-08-24 18:20:37,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:37,934 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:37,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:38,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 18:20:38,140 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:38,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:38,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1841357628, now seen corresponding path program 12 times [2023-08-24 18:20:38,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:38,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005035207] [2023-08-24 18:20:38,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:38,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:38,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:38,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005035207] [2023-08-24 18:20:38,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005035207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:38,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325887893] [2023-08-24 18:20:38,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 18:20:38,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:38,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:38,407 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:20:38,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 18:20:38,501 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-08-24 18:20:38,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:38,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-24 18:20:38,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:38,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:38,825 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:38,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325887893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:38,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:38,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2023-08-24 18:20:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891585388] [2023-08-24 18:20:38,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:38,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-24 18:20:38,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:38,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-24 18:20:38,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-08-24 18:20:38,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:38,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 255 transitions, 5310 flow. Second operand has 38 states, 38 states have (on average 57.28947368421053) internal successors, (2177), 38 states have internal predecessors, (2177), 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) [2023-08-24 18:20:38,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:38,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:38,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:40,111 INFO L124 PetriNetUnfolderBase]: 1064/1967 cut-off events. [2023-08-24 18:20:40,111 INFO L125 PetriNetUnfolderBase]: For 351391/351391 co-relation queries the response was YES. [2023-08-24 18:20:40,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28079 conditions, 1967 events. 1064/1967 cut-off events. For 351391/351391 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9954 event pairs, 16 based on Foata normal form. 24/1991 useless extension candidates. Maximal degree in co-relation 27979. Up to 803 conditions per place. [2023-08-24 18:20:40,150 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 76 selfloop transitions, 249 changer transitions 71/396 dead transitions. [2023-08-24 18:20:40,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 396 transitions, 10753 flow [2023-08-24 18:20:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-24 18:20:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-24 18:20:40,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2553 transitions. [2023-08-24 18:20:40,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38965201465201466 [2023-08-24 18:20:40,154 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2553 transitions. [2023-08-24 18:20:40,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2553 transitions. [2023-08-24 18:20:40,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:40,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2553 transitions. [2023-08-24 18:20:40,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 60.785714285714285) internal successors, (2553), 42 states have internal predecessors, (2553), 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) [2023-08-24 18:20:40,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 156.0) internal successors, (6708), 43 states have internal predecessors, (6708), 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) [2023-08-24 18:20:40,167 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 156.0) internal successors, (6708), 43 states have internal predecessors, (6708), 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) [2023-08-24 18:20:40,167 INFO L175 Difference]: Start difference. First operand has 277 places, 255 transitions, 5310 flow. Second operand 42 states and 2553 transitions. [2023-08-24 18:20:40,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 396 transitions, 10753 flow [2023-08-24 18:20:40,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 396 transitions, 9478 flow, removed 508 selfloop flow, removed 25 redundant places. [2023-08-24 18:20:40,822 INFO L231 Difference]: Finished difference. Result has 303 places, 272 transitions, 5856 flow [2023-08-24 18:20:40,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=4143, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5856, PETRI_PLACES=303, PETRI_TRANSITIONS=272} [2023-08-24 18:20:40,823 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 279 predicate places. [2023-08-24 18:20:40,823 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 272 transitions, 5856 flow [2023-08-24 18:20:40,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 57.28947368421053) internal successors, (2177), 38 states have internal predecessors, (2177), 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) [2023-08-24 18:20:40,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:40,824 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:40,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:41,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-24 18:20:41,024 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:41,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:41,025 INFO L85 PathProgramCache]: Analyzing trace with hash 804620325, now seen corresponding path program 13 times [2023-08-24 18:20:41,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:41,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575732462] [2023-08-24 18:20:41,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:41,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:41,301 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:41,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:41,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575732462] [2023-08-24 18:20:41,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575732462] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:41,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052611990] [2023-08-24 18:20:41,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 18:20:41,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:41,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:41,305 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:20:41,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 18:20:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:41,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-24 18:20:41,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:41,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:41,731 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:41,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052611990] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:41,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:41,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-08-24 18:20:41,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734277154] [2023-08-24 18:20:41,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:41,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-24 18:20:41,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:41,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-24 18:20:41,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2023-08-24 18:20:41,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:41,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 272 transitions, 5856 flow. Second operand has 40 states, 40 states have (on average 57.275) internal successors, (2291), 40 states have internal predecessors, (2291), 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) [2023-08-24 18:20:41,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:41,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:41,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:43,230 INFO L124 PetriNetUnfolderBase]: 1152/2127 cut-off events. [2023-08-24 18:20:43,231 INFO L125 PetriNetUnfolderBase]: For 477812/477812 co-relation queries the response was YES. [2023-08-24 18:20:43,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32502 conditions, 2127 events. 1152/2127 cut-off events. For 477812/477812 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10847 event pairs, 17 based on Foata normal form. 32/2159 useless extension candidates. Maximal degree in co-relation 32394. Up to 859 conditions per place. [2023-08-24 18:20:43,259 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 84 selfloop transitions, 275 changer transitions 90/449 dead transitions. [2023-08-24 18:20:43,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 449 transitions, 12922 flow [2023-08-24 18:20:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 18:20:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 18:20:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2921 transitions. [2023-08-24 18:20:43,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39009081196581197 [2023-08-24 18:20:43,264 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2921 transitions. [2023-08-24 18:20:43,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2921 transitions. [2023-08-24 18:20:43,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:43,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2921 transitions. [2023-08-24 18:20:43,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 60.854166666666664) internal successors, (2921), 48 states have internal predecessors, (2921), 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) [2023-08-24 18:20:43,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 156.0) internal successors, (7644), 49 states have internal predecessors, (7644), 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) [2023-08-24 18:20:43,277 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 156.0) internal successors, (7644), 49 states have internal predecessors, (7644), 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) [2023-08-24 18:20:43,277 INFO L175 Difference]: Start difference. First operand has 303 places, 272 transitions, 5856 flow. Second operand 48 states and 2921 transitions. [2023-08-24 18:20:43,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 449 transitions, 12922 flow [2023-08-24 18:20:44,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 449 transitions, 10640 flow, removed 939 selfloop flow, removed 32 redundant places. [2023-08-24 18:20:44,157 INFO L231 Difference]: Finished difference. Result has 329 places, 298 transitions, 6356 flow [2023-08-24 18:20:44,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=4491, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=6356, PETRI_PLACES=329, PETRI_TRANSITIONS=298} [2023-08-24 18:20:44,158 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 305 predicate places. [2023-08-24 18:20:44,158 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 298 transitions, 6356 flow [2023-08-24 18:20:44,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 57.275) internal successors, (2291), 40 states have internal predecessors, (2291), 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) [2023-08-24 18:20:44,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:44,158 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:44,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:44,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-24 18:20:44,359 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:44,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:44,359 INFO L85 PathProgramCache]: Analyzing trace with hash -44414597, now seen corresponding path program 14 times [2023-08-24 18:20:44,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:44,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491044586] [2023-08-24 18:20:44,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:44,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:44,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:44,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491044586] [2023-08-24 18:20:44,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491044586] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:44,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915095767] [2023-08-24 18:20:44,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 18:20:44,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:44,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:44,845 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 18:20:44,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 18:20:44,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 18:20:44,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:44,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-24 18:20:44,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:45,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:45,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915095767] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:45,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:45,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2023-08-24 18:20:45,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775231775] [2023-08-24 18:20:45,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:45,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 18:20:45,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:45,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 18:20:45,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2023-08-24 18:20:45,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:45,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 298 transitions, 6356 flow. Second operand has 25 states, 25 states have (on average 57.2) internal successors, (1430), 25 states have internal predecessors, (1430), 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) [2023-08-24 18:20:45,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:45,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:45,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:46,478 INFO L124 PetriNetUnfolderBase]: 1168/2155 cut-off events. [2023-08-24 18:20:46,478 INFO L125 PetriNetUnfolderBase]: For 451393/451393 co-relation queries the response was YES. [2023-08-24 18:20:46,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32340 conditions, 2155 events. 1168/2155 cut-off events. For 451393/451393 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10960 event pairs, 28 based on Foata normal form. 4/2159 useless extension candidates. Maximal degree in co-relation 32222. Up to 855 conditions per place. [2023-08-24 18:20:46,568 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 80 selfloop transitions, 267 changer transitions 74/421 dead transitions. [2023-08-24 18:20:46,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 421 transitions, 11393 flow [2023-08-24 18:20:46,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-24 18:20:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-24 18:20:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2428 transitions. [2023-08-24 18:20:46,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891025641025641 [2023-08-24 18:20:46,571 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2428 transitions. [2023-08-24 18:20:46,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2428 transitions. [2023-08-24 18:20:46,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:46,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2428 transitions. [2023-08-24 18:20:46,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 60.7) internal successors, (2428), 40 states have internal predecessors, (2428), 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) [2023-08-24 18:20:46,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 156.0) internal successors, (6396), 41 states have internal predecessors, (6396), 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) [2023-08-24 18:20:46,580 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 156.0) internal successors, (6396), 41 states have internal predecessors, (6396), 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) [2023-08-24 18:20:46,580 INFO L175 Difference]: Start difference. First operand has 329 places, 298 transitions, 6356 flow. Second operand 40 states and 2428 transitions. [2023-08-24 18:20:46,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 421 transitions, 11393 flow [2023-08-24 18:20:47,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 421 transitions, 9963 flow, removed 522 selfloop flow, removed 34 redundant places. [2023-08-24 18:20:47,469 INFO L231 Difference]: Finished difference. Result has 336 places, 302 transitions, 5969 flow [2023-08-24 18:20:47,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=5162, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=5969, PETRI_PLACES=336, PETRI_TRANSITIONS=302} [2023-08-24 18:20:47,470 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 312 predicate places. [2023-08-24 18:20:47,470 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 302 transitions, 5969 flow [2023-08-24 18:20:47,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 57.2) internal successors, (1430), 25 states have internal predecessors, (1430), 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) [2023-08-24 18:20:47,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:47,471 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:47,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:47,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-24 18:20:47,676 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 10 more)] === [2023-08-24 18:20:47,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:47,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1764653954, now seen corresponding path program 15 times [2023-08-24 18:20:47,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:47,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101039076] [2023-08-24 18:20:47,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:47,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:20:47,695 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:20:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:20:47,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:20:47,747 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:20:47,748 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (12 of 13 remaining) [2023-08-24 18:20:47,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-08-24 18:20:47,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-08-24 18:20:47,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 13 remaining) [2023-08-24 18:20:47,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-24 18:20:47,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-08-24 18:20:47,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-08-24 18:20:47,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-08-24 18:20:47,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-08-24 18:20:47,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-08-24 18:20:47,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-08-24 18:20:47,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-08-24 18:20:47,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-08-24 18:20:47,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-24 18:20:47,751 INFO L445 BasicCegarLoop]: Path program histogram: [15, 2, 1, 1] [2023-08-24 18:20:47,756 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 18:20:47,756 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 18:20:47,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 06:20:47 BasicIcfg [2023-08-24 18:20:47,828 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 18:20:47,831 INFO L158 Benchmark]: Toolchain (without parser) took 27842.86ms. Allocated memory was 367.0MB in the beginning and 677.4MB in the end (delta: 310.4MB). Free memory was 342.3MB in the beginning and 401.9MB in the end (delta: -59.5MB). Peak memory consumption was 252.4MB. Max. memory is 16.0GB. [2023-08-24 18:20:47,832 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 367.0MB. Free memory is still 343.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 18:20:47,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 445.45ms. Allocated memory is still 367.0MB. Free memory was 341.8MB in the beginning and 322.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 18:20:47,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.08ms. Allocated memory is still 367.0MB. Free memory was 322.5MB in the beginning and 320.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 18:20:47,832 INFO L158 Benchmark]: Boogie Preprocessor took 20.46ms. Allocated memory is still 367.0MB. Free memory was 320.8MB in the beginning and 319.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 18:20:47,832 INFO L158 Benchmark]: RCFGBuilder took 375.17ms. Allocated memory is still 367.0MB. Free memory was 319.3MB in the beginning and 303.0MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 18:20:47,833 INFO L158 Benchmark]: TraceAbstraction took 26958.46ms. Allocated memory was 367.0MB in the beginning and 677.4MB in the end (delta: 310.4MB). Free memory was 302.5MB in the beginning and 401.9MB in the end (delta: -99.4MB). Peak memory consumption was 212.6MB. Max. memory is 16.0GB. [2023-08-24 18:20:47,834 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 367.0MB. Free memory is still 343.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 445.45ms. Allocated memory is still 367.0MB. Free memory was 341.8MB in the beginning and 322.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.08ms. Allocated memory is still 367.0MB. Free memory was 322.5MB in the beginning and 320.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 20.46ms. Allocated memory is still 367.0MB. Free memory was 320.8MB in the beginning and 319.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 375.17ms. Allocated memory is still 367.0MB. Free memory was 319.3MB in the beginning and 303.0MB in the end (delta: 16.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 26958.46ms. Allocated memory was 367.0MB in the beginning and 677.4MB in the end (delta: 310.4MB). Free memory was 302.5MB in the beginning and 401.9MB in the end (delta: -99.4MB). Peak memory consumption was 212.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] - GenericResultAtLocation [Line: 245]: Unsoundness Warning unspecified type, defaulting to int C: short [245] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 77 PlacesBefore, 24 PlacesAfterwards, 76 TransitionsBefore, 19 TransitionsAfterwards, 1792 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 78 TotalNumberOfCompositions, 2074 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1641, independent: 1592, independent conditional: 0, independent unconditional: 1592, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 973, independent: 953, independent conditional: 0, independent unconditional: 953, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1641, independent: 639, independent conditional: 0, independent unconditional: 639, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 973, unknown conditional: 0, unknown unconditional: 973] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 693]: assertion can be violated assertion can be violated We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-2] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=-1] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] EXPR 0 i >= (2*10 +6) [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] EXPR 1 j + 1 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] EXPR 2 i + 1 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] EXPR 0 j >= (2*10 +6) [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) [L693] 0 __assert_fail ("0", "triangular-longer-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] - UnprovableResult [Line: 716]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.8s, OverallIterations: 19, TraceHistogramMax: 10, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4403 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4403 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 437 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3148 IncrementalHoareTripleChecker+Invalid, 3585 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 437 mSolverCounterUnsat, 0 mSDtfsCounter, 3148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 873 GetRequests, 246 SyntacticMatches, 19 SemanticMatches, 608 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10262 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6356occurred in iteration=17, InterpolantAutomatonStates: 401, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 492 NumberOfCodeBlocks, 492 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 628 ConstructedInterpolants, 0 QuantifiedInterpolants, 2574 SizeOfPredicates, 116 NumberOfNonLiveVariables, 2066 ConjunctsInSsa, 183 ConjunctsInUnsatCore, 40 InterpolantComputations, 7 PerfectInterpolantSequences, 0/1035 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-24 18:20:47,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...