/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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:20:08,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:20:08,726 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 18:20:08,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:20:08,731 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:20:08,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:20:08,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:20:08,766 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:20:08,767 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:20:08,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:20:08,772 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:20:08,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:20:08,772 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:20:08,774 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:20:08,774 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:20:08,774 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:20:08,774 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:20:08,774 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:20:08,775 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:20:08,775 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:20:08,775 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:20:08,775 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:20:08,776 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:20:08,776 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:20:08,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:20:08,776 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:20:08,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:20:08,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:20:08,777 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:20:08,777 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:20:08,778 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:20:08,778 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:20:08,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:20:08,779 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:20:08,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:20:08,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:20:09,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:20:09,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:20:09,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:20:09,122 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:20:09,123 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:20:09,124 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-08-24 18:20:10,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:20:10,513 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:20:10,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-1.i [2023-08-24 18:20:10,527 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d74bd57/7f9e089df21f45e492e340ca153a1bb3/FLAG85348ad43 [2023-08-24 18:20:10,540 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49d74bd57/7f9e089df21f45e492e340ca153a1bb3 [2023-08-24 18:20:10,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:20:10,546 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:20:10,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:20:10,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:20:10,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:20:10,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:20:10" (1/1) ... [2023-08-24 18:20:10,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781ecded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:10, skipping insertion in model container [2023-08-24 18:20:10,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:20:10" (1/1) ... [2023-08-24 18:20:10,590 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:20:10,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:20:10,933 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:20:10,960 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-24 18:20:10,961 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-24 18:20:10,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:20:11,016 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 18:20:11,016 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 18:20:11,022 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:20:11,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11 WrapperNode [2023-08-24 18:20:11,023 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:20:11,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:20:11,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:20:11,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:20:11,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (1/1) ... [2023-08-24 18:20:11,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (1/1) ... [2023-08-24 18:20:11,074 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2023-08-24 18:20:11,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:20:11,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:20:11,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:20:11,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:20:11,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (1/1) ... [2023-08-24 18:20:11,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (1/1) ... [2023-08-24 18:20:11,085 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (1/1) ... [2023-08-24 18:20:11,085 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (1/1) ... [2023-08-24 18:20:11,094 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (1/1) ... [2023-08-24 18:20:11,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (1/1) ... [2023-08-24 18:20:11,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (1/1) ... [2023-08-24 18:20:11,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (1/1) ... [2023-08-24 18:20:11,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:20:11,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:20:11,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:20:11,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:20:11,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (1/1) ... [2023-08-24 18:20:11,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:20:11,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:11,138 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 18:20:11,160 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 18:20:11,182 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-24 18:20:11,182 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-24 18:20:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-24 18:20:11,183 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-24 18:20:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:20:11,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 18:20:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:20:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:20:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:20:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:20:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 18:20:11,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:20:11,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:20:11,186 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 18:20:11,337 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:20:11,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:20:11,561 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:20:11,601 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:20:11,601 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 18:20:11,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:20:11 BoogieIcfgContainer [2023-08-24 18:20:11,604 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:20:11,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:20:11,606 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:20:11,609 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:20:11,609 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:20:10" (1/3) ... [2023-08-24 18:20:11,610 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a30808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:20:11, skipping insertion in model container [2023-08-24 18:20:11,610 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:20:11" (2/3) ... [2023-08-24 18:20:11,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50a30808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:20:11, skipping insertion in model container [2023-08-24 18:20:11,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:20:11" (3/3) ... [2023-08-24 18:20:11,612 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2023-08-24 18:20:11,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:20:11,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-24 18:20:11,629 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:20:11,709 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 18:20:11,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 166 flow [2023-08-24 18:20:11,789 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-24 18:20:11,790 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:11,796 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 18:20:11,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 78 transitions, 166 flow [2023-08-24 18:20:11,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:11,818 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:20:11,826 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:11,830 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:11,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 158 flow [2023-08-24 18:20:11,854 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-08-24 18:20:11,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:11,855 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 18:20:11,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 1792 [2023-08-24 18:20:13,949 INFO L134 LiptonReduction]: Checked pairs total: 2074 [2023-08-24 18:20:13,950 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-24 18:20:13,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:20:13,966 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;@5eda50f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:20:13,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-08-24 18:20:13,969 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:20:13,969 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-24 18:20:13,969 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:13,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:13,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-24 18:20:13,970 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 18:20:13,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:13,974 INFO L85 PathProgramCache]: Analyzing trace with hash 10943499, now seen corresponding path program 1 times [2023-08-24 18:20:13,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:13,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044676782] [2023-08-24 18:20:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:13,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:14,113 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 18:20:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044676782] [2023-08-24 18:20:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044676782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:14,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 18:20:14,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600531011] [2023-08-24 18:20:14,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:14,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 18:20:14,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:14,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 18:20:14,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 18:20:14,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 156 [2023-08-24 18:20:14,156 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 18:20:14,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:14,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 156 [2023-08-24 18:20:14,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:14,220 INFO L124 PetriNetUnfolderBase]: 70/113 cut-off events. [2023-08-24 18:20:14,220 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:20:14,221 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 18:20:14,224 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 12 selfloop transitions, 0 changer transitions 1/13 dead transitions. [2023-08-24 18:20:14,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 13 transitions, 58 flow [2023-08-24 18:20:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 18:20:14,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 18:20:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 141 transitions. [2023-08-24 18:20:14,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4519230769230769 [2023-08-24 18:20:14,240 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 141 transitions. [2023-08-24 18:20:14,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 141 transitions. [2023-08-24 18:20:14,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:14,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 141 transitions. [2023-08-24 18:20:14,250 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 18:20:14,253 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 18:20:14,253 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 18:20:14,255 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 44 flow. Second operand 2 states and 141 transitions. [2023-08-24 18:20:14,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 13 transitions, 58 flow [2023-08-24 18:20:14,257 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 18:20:14,258 INFO L231 Difference]: Finished difference. Result has 17 places, 12 transitions, 28 flow [2023-08-24 18:20:14,260 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 18:20:14,263 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -7 predicate places. [2023-08-24 18:20:14,263 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 12 transitions, 28 flow [2023-08-24 18:20:14,263 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 18:20:14,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:14,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 18:20:14,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:20:14,264 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 18:20:14,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1927611490, now seen corresponding path program 1 times [2023-08-24 18:20:14,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:14,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136560218] [2023-08-24 18:20:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:14,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:14,510 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 18:20:14,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:14,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136560218] [2023-08-24 18:20:14,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136560218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:14,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:14,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:20:14,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215643344] [2023-08-24 18:20:14,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:14,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 18:20:14,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:14,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 18:20:14,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 18:20:14,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:14,516 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 18:20:14,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:14,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:14,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:14,597 INFO L124 PetriNetUnfolderBase]: 84/143 cut-off events. [2023-08-24 18:20:14,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:20:14,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 143 events. 84/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 15 based on Foata normal form. 15/119 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2023-08-24 18:20:14,600 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 23 selfloop transitions, 7 changer transitions 2/32 dead transitions. [2023-08-24 18:20:14,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 32 transitions, 134 flow [2023-08-24 18:20:14,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 18:20:14,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 18:20:14,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2023-08-24 18:20:14,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2023-08-24 18:20:14,607 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 314 transitions. [2023-08-24 18:20:14,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 314 transitions. [2023-08-24 18:20:14,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:14,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 314 transitions. [2023-08-24 18:20:14,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 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 18:20:14,614 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 18:20:14,615 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 18:20:14,615 INFO L175 Difference]: Start difference. First operand has 17 places, 12 transitions, 28 flow. Second operand 5 states and 314 transitions. [2023-08-24 18:20:14,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 32 transitions, 134 flow [2023-08-24 18:20:14,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 32 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:20:14,616 INFO L231 Difference]: Finished difference. Result has 23 places, 18 transitions, 75 flow [2023-08-24 18:20:14,616 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=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2023-08-24 18:20:14,617 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places. [2023-08-24 18:20:14,617 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 75 flow [2023-08-24 18:20:14,618 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 18:20:14,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:14,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:14,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:20:14,618 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 18:20:14,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:14,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1337591207, now seen corresponding path program 1 times [2023-08-24 18:20:14,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:14,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192776944] [2023-08-24 18:20:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:14,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:14,748 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 18:20:14,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:14,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192776944] [2023-08-24 18:20:14,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192776944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:14,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:14,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:20:14,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474218794] [2023-08-24 18:20:14,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:14,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 18:20:14,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:14,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 18:20:14,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 18:20:14,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:14,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 75 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 18:20:14,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:14,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:14,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:14,810 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-08-24 18:20:14,810 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-24 18:20:14,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 157 events. 92/157 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 438 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 448. Up to 61 conditions per place. [2023-08-24 18:20:14,812 INFO L140 encePairwiseOnDemand]: 152/156 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-08-24 18:20:14,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 173 flow [2023-08-24 18:20:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 18:20:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 18:20:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2023-08-24 18:20:14,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2023-08-24 18:20:14,818 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 249 transitions. [2023-08-24 18:20:14,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 249 transitions. [2023-08-24 18:20:14,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:14,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 249 transitions. [2023-08-24 18:20:14,819 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 18:20:14,821 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 18:20:14,821 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 18:20:14,821 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 75 flow. Second operand 4 states and 249 transitions. [2023-08-24 18:20:14,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 173 flow [2023-08-24 18:20:14,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 18:20:14,825 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 119 flow [2023-08-24 18:20:14,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2023-08-24 18:20:14,826 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-08-24 18:20:14,827 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 119 flow [2023-08-24 18:20:14,827 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 18:20:14,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:14,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:14,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:20:14,831 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 18:20:14,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:14,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1303192770, now seen corresponding path program 1 times [2023-08-24 18:20:14,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:14,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989663790] [2023-08-24 18:20:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:14,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:14,993 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 18:20:14,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:14,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989663790] [2023-08-24 18:20:14,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989663790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:14,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:14,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:20:14,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685618822] [2023-08-24 18:20:14,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:14,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 18:20:14,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:14,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 18:20:14,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 18:20:14,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:14,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 119 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 18:20:14,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:14,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:14,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:15,070 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-08-24 18:20:15,070 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-08-24 18:20:15,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 713 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 748. Up to 101 conditions per place. [2023-08-24 18:20:15,073 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-08-24 18:20:15,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 301 flow [2023-08-24 18:20:15,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 18:20:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 18:20:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 374 transitions. [2023-08-24 18:20:15,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3995726495726496 [2023-08-24 18:20:15,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 374 transitions. [2023-08-24 18:20:15,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 374 transitions. [2023-08-24 18:20:15,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:15,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 374 transitions. [2023-08-24 18:20:15,076 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 18:20:15,078 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 18:20:15,078 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 18:20:15,078 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 119 flow. Second operand 6 states and 374 transitions. [2023-08-24 18:20:15,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 301 flow [2023-08-24 18:20:15,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 285 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-24 18:20:15,081 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 203 flow [2023-08-24 18:20:15,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-24 18:20:15,082 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2023-08-24 18:20:15,082 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 203 flow [2023-08-24 18:20:15,082 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 18:20:15,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:15,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:15,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:20:15,083 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 18:20:15,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:15,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1303209510, now seen corresponding path program 2 times [2023-08-24 18:20:15,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:15,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189816325] [2023-08-24 18:20:15,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:15,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:15,223 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 18:20:15,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:15,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189816325] [2023-08-24 18:20:15,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189816325] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:15,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:15,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 18:20:15,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248189961] [2023-08-24 18:20:15,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:15,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 18:20:15,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:15,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 18:20:15,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 18:20:15,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:15,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 203 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 18:20:15,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:15,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:15,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:15,305 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-08-24 18:20:15,305 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-08-24 18:20:15,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 199 events. 114/199 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 611 event pairs, 23 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 761. Up to 84 conditions per place. [2023-08-24 18:20:15,307 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-08-24 18:20:15,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 349 flow [2023-08-24 18:20:15,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 18:20:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 18:20:15,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 313 transitions. [2023-08-24 18:20:15,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012820512820513 [2023-08-24 18:20:15,314 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 313 transitions. [2023-08-24 18:20:15,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 313 transitions. [2023-08-24 18:20:15,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:15,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 313 transitions. [2023-08-24 18:20:15,316 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 18:20:15,318 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 18:20:15,318 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 18:20:15,318 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 203 flow. Second operand 5 states and 313 transitions. [2023-08-24 18:20:15,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 349 flow [2023-08-24 18:20:15,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 335 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-24 18:20:15,325 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 236 flow [2023-08-24 18:20:15,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=236, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-08-24 18:20:15,327 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 18 predicate places. [2023-08-24 18:20:15,327 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 236 flow [2023-08-24 18:20:15,327 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 18:20:15,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:15,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:15,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:20:15,328 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 18:20:15,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:15,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1194528409, now seen corresponding path program 1 times [2023-08-24 18:20:15,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:15,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104571474] [2023-08-24 18:20:15,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:15,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:15,434 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 18:20:15,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:15,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104571474] [2023-08-24 18:20:15,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104571474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:15,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:15,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 18:20:15,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833507817] [2023-08-24 18:20:15,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:15,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:20:15,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:20:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:20:15,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:15,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 236 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 18:20:15,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:15,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:15,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:15,554 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-08-24 18:20:15,554 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2023-08-24 18:20:15,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 263 events. 150/263 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 861 event pairs, 20 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1078. Up to 73 conditions per place. [2023-08-24 18:20:15,556 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-08-24 18:20:15,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 58 transitions, 496 flow [2023-08-24 18:20:15,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 18:20:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 18:20:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 494 transitions. [2023-08-24 18:20:15,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2023-08-24 18:20:15,559 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 494 transitions. [2023-08-24 18:20:15,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 494 transitions. [2023-08-24 18:20:15,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:15,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 494 transitions. [2023-08-24 18:20:15,560 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 18:20:15,562 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 18:20:15,562 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 18:20:15,562 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 236 flow. Second operand 8 states and 494 transitions. [2023-08-24 18:20:15,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 58 transitions, 496 flow [2023-08-24 18:20:15,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 457 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-24 18:20:15,566 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 336 flow [2023-08-24 18:20:15,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-24 18:20:15,567 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 25 predicate places. [2023-08-24 18:20:15,567 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 336 flow [2023-08-24 18:20:15,567 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 18:20:15,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:15,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:15,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:20:15,568 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 18:20:15,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1229400619, now seen corresponding path program 2 times [2023-08-24 18:20:15,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:15,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55941736] [2023-08-24 18:20:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:15,717 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 18:20:15,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:15,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55941736] [2023-08-24 18:20:15,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55941736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:15,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:20:15,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 18:20:15,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320957827] [2023-08-24 18:20:15,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:15,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 18:20:15,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:15,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 18:20:15,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-24 18:20:15,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:15,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 336 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 18:20:15,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:15,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:15,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:15,827 INFO L124 PetriNetUnfolderBase]: 146/255 cut-off events. [2023-08-24 18:20:15,828 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2023-08-24 18:20:15,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1212 conditions, 255 events. 146/255 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 860 event pairs, 18 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 1192. Up to 75 conditions per place. [2023-08-24 18:20:15,830 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 28 selfloop transitions, 22 changer transitions 10/60 dead transitions. [2023-08-24 18:20:15,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 602 flow [2023-08-24 18:20:15,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 18:20:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 18:20:15,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 493 transitions. [2023-08-24 18:20:15,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39503205128205127 [2023-08-24 18:20:15,832 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 493 transitions. [2023-08-24 18:20:15,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 493 transitions. [2023-08-24 18:20:15,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:15,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 493 transitions. [2023-08-24 18:20:15,833 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 18:20:15,835 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 18:20:15,835 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 18:20:15,836 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 336 flow. Second operand 8 states and 493 transitions. [2023-08-24 18:20:15,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 602 flow [2023-08-24 18:20:15,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 551 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-08-24 18:20:15,841 INFO L231 Difference]: Finished difference. Result has 56 places, 38 transitions, 395 flow [2023-08-24 18:20:15,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=395, PETRI_PLACES=56, PETRI_TRANSITIONS=38} [2023-08-24 18:20:15,842 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 32 predicate places. [2023-08-24 18:20:15,842 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 38 transitions, 395 flow [2023-08-24 18:20:15,842 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 18:20:15,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:15,843 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:15,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 18:20:15,843 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 18:20:15,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:15,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1643179524, now seen corresponding path program 3 times [2023-08-24 18:20:15,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:15,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049600035] [2023-08-24 18:20:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:15,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:15,993 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 18:20:15,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:15,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049600035] [2023-08-24 18:20:15,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049600035] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:15,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240845177] [2023-08-24 18:20:15,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 18:20:15,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:15,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:16,001 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 18:20:16,022 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 18:20:16,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 18:20:16,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:16,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 18:20:16,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:16,157 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 18:20:16,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:16,257 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 18:20:16,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240845177] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:16,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:16,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-24 18:20:16,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125493201] [2023-08-24 18:20:16,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:16,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 18:20:16,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:16,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 18:20:16,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-24 18:20:16,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:16,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 38 transitions, 395 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 18:20:16,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:16,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:16,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:16,455 INFO L124 PetriNetUnfolderBase]: 170/303 cut-off events. [2023-08-24 18:20:16,455 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2023-08-24 18:20:16,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 303 events. 170/303 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 990 event pairs, 35 based on Foata normal form. 24/327 useless extension candidates. Maximal degree in co-relation 1499. Up to 161 conditions per place. [2023-08-24 18:20:16,458 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 42 selfloop transitions, 17 changer transitions 19/78 dead transitions. [2023-08-24 18:20:16,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 817 flow [2023-08-24 18:20:16,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 18:20:16,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 18:20:16,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 737 transitions. [2023-08-24 18:20:16,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936965811965812 [2023-08-24 18:20:16,461 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 737 transitions. [2023-08-24 18:20:16,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 737 transitions. [2023-08-24 18:20:16,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:16,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 737 transitions. [2023-08-24 18:20:16,463 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 18:20:16,466 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 18:20:16,466 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 18:20:16,466 INFO L175 Difference]: Start difference. First operand has 56 places, 38 transitions, 395 flow. Second operand 12 states and 737 transitions. [2023-08-24 18:20:16,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 817 flow [2023-08-24 18:20:16,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 768 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-24 18:20:16,474 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 506 flow [2023-08-24 18:20:16,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=506, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2023-08-24 18:20:16,474 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2023-08-24 18:20:16,474 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 506 flow [2023-08-24 18:20:16,475 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 18:20:16,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:16,475 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:16,493 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 18:20:16,679 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 18:20:16,680 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 18:20:16,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:16,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1627092384, now seen corresponding path program 4 times [2023-08-24 18:20:16,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:16,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741092408] [2023-08-24 18:20:16,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:16,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:16,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:16,787 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 18:20:16,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:16,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741092408] [2023-08-24 18:20:16,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741092408] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:16,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834311891] [2023-08-24 18:20:16,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 18:20:16,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:16,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:16,791 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 18:20:16,815 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 18:20:16,867 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 18:20:16,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:16,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 18:20:16,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:16,922 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 18:20:16,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:17,022 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 18:20:17,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834311891] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:17,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:17,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 18:20:17,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227505068] [2023-08-24 18:20:17,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:17,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 18:20:17,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:17,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 18:20:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-24 18:20:17,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:17,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 506 flow. Second operand has 13 states, 13 states have (on average 57.92307692307692) internal successors, (753), 13 states have internal predecessors, (753), 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 18:20:17,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:17,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:17,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:17,391 INFO L124 PetriNetUnfolderBase]: 244/439 cut-off events. [2023-08-24 18:20:17,391 INFO L125 PetriNetUnfolderBase]: For 6607/6607 co-relation queries the response was YES. [2023-08-24 18:20:17,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 439 events. 244/439 cut-off events. For 6607/6607 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1688 event pairs, 28 based on Foata normal form. 28/467 useless extension candidates. Maximal degree in co-relation 2507. Up to 134 conditions per place. [2023-08-24 18:20:17,396 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 46 selfloop transitions, 42 changer transitions 29/117 dead transitions. [2023-08-24 18:20:17,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 117 transitions, 1395 flow [2023-08-24 18:20:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 18:20:17,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 18:20:17,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1105 transitions. [2023-08-24 18:20:17,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39351851851851855 [2023-08-24 18:20:17,400 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1105 transitions. [2023-08-24 18:20:17,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1105 transitions. [2023-08-24 18:20:17,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:17,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1105 transitions. [2023-08-24 18:20:17,404 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 18:20:17,426 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 18:20:17,427 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 18:20:17,427 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 506 flow. Second operand 18 states and 1105 transitions. [2023-08-24 18:20:17,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 117 transitions, 1395 flow [2023-08-24 18:20:17,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 1281 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-08-24 18:20:17,442 INFO L231 Difference]: Finished difference. Result has 91 places, 64 transitions, 911 flow [2023-08-24 18:20:17,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=911, PETRI_PLACES=91, PETRI_TRANSITIONS=64} [2023-08-24 18:20:17,443 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2023-08-24 18:20:17,443 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 64 transitions, 911 flow [2023-08-24 18:20:17,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 57.92307692307692) internal successors, (753), 13 states have internal predecessors, (753), 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 18:20:17,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:17,444 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:17,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:17,649 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 18:20:17,650 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 18:20:17,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:17,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1185544892, now seen corresponding path program 5 times [2023-08-24 18:20:17,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:17,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785785000] [2023-08-24 18:20:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:17,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:17,745 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 18:20:17,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:17,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785785000] [2023-08-24 18:20:17,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785785000] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:17,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021669477] [2023-08-24 18:20:17,745 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 18:20:17,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:17,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:17,746 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 18:20:17,768 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 18:20:17,818 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 18:20:17,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:17,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 18:20:17,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:17,844 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 18:20:17,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:17,935 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 18:20:17,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021669477] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:17,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:17,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-24 18:20:17,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089554943] [2023-08-24 18:20:17,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:17,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 18:20:17,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:17,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 18:20:17,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-08-24 18:20:17,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:17,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 64 transitions, 911 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 18:20:17,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:17,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:17,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:18,224 INFO L124 PetriNetUnfolderBase]: 328/599 cut-off events. [2023-08-24 18:20:18,224 INFO L125 PetriNetUnfolderBase]: For 16167/16167 co-relation queries the response was YES. [2023-08-24 18:20:18,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4539 conditions, 599 events. 328/599 cut-off events. For 16167/16167 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2505 event pairs, 27 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 4499. Up to 210 conditions per place. [2023-08-24 18:20:18,230 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 56 selfloop transitions, 58 changer transitions 19/133 dead transitions. [2023-08-24 18:20:18,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 133 transitions, 2190 flow [2023-08-24 18:20:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 18:20:18,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 18:20:18,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1100 transitions. [2023-08-24 18:20:18,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39173789173789175 [2023-08-24 18:20:18,234 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1100 transitions. [2023-08-24 18:20:18,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1100 transitions. [2023-08-24 18:20:18,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:18,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1100 transitions. [2023-08-24 18:20:18,237 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 18:20:18,240 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 18:20:18,241 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 18:20:18,241 INFO L175 Difference]: Start difference. First operand has 91 places, 64 transitions, 911 flow. Second operand 18 states and 1100 transitions. [2023-08-24 18:20:18,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 133 transitions, 2190 flow [2023-08-24 18:20:18,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 133 transitions, 1900 flow, removed 139 selfloop flow, removed 3 redundant places. [2023-08-24 18:20:18,303 INFO L231 Difference]: Finished difference. Result has 113 places, 80 transitions, 1285 flow [2023-08-24 18:20:18,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=88, 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=1285, PETRI_PLACES=113, PETRI_TRANSITIONS=80} [2023-08-24 18:20:18,304 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 89 predicate places. [2023-08-24 18:20:18,304 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 80 transitions, 1285 flow [2023-08-24 18:20:18,304 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 18:20:18,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:18,305 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:18,313 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 18:20:18,510 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 18:20:18,510 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 18:20:18,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:18,511 INFO L85 PathProgramCache]: Analyzing trace with hash 338622504, now seen corresponding path program 6 times [2023-08-24 18:20:18,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:18,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985629351] [2023-08-24 18:20:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:18,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:18,597 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 18:20:18,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985629351] [2023-08-24 18:20:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985629351] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:18,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724585541] [2023-08-24 18:20:18,598 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 18:20:18,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:18,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:18,599 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 18:20:18,621 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 18:20:18,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-24 18:20:18,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:18,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 18:20:18,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:18,715 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 18:20:18,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:18,778 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 18:20:18,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724585541] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:18,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:18,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-24 18:20:18,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878732757] [2023-08-24 18:20:18,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:18,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 18:20:18,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:18,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 18:20:18,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-24 18:20:18,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:18,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 80 transitions, 1285 flow. Second operand has 14 states, 14 states have (on average 57.785714285714285) internal successors, (809), 14 states have internal predecessors, (809), 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 18:20:18,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:18,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:18,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:19,188 INFO L124 PetriNetUnfolderBase]: 388/707 cut-off events. [2023-08-24 18:20:19,188 INFO L125 PetriNetUnfolderBase]: For 31371/31371 co-relation queries the response was YES. [2023-08-24 18:20:19,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6074 conditions, 707 events. 388/707 cut-off events. For 31371/31371 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3062 event pairs, 20 based on Foata normal form. 28/735 useless extension candidates. Maximal degree in co-relation 6025. Up to 247 conditions per place. [2023-08-24 18:20:19,195 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 44 selfloop transitions, 82 changer transitions 34/160 dead transitions. [2023-08-24 18:20:19,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 160 transitions, 3049 flow [2023-08-24 18:20:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-24 18:20:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-24 18:20:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1223 transitions. [2023-08-24 18:20:19,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3919871794871795 [2023-08-24 18:20:19,198 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1223 transitions. [2023-08-24 18:20:19,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1223 transitions. [2023-08-24 18:20:19,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:19,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1223 transitions. [2023-08-24 18:20:19,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 61.15) internal successors, (1223), 20 states have internal predecessors, (1223), 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 18:20:19,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 156.0) internal successors, (3276), 21 states have internal predecessors, (3276), 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 18:20:19,206 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 156.0) internal successors, (3276), 21 states have internal predecessors, (3276), 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 18:20:19,206 INFO L175 Difference]: Start difference. First operand has 113 places, 80 transitions, 1285 flow. Second operand 20 states and 1223 transitions. [2023-08-24 18:20:19,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 160 transitions, 3049 flow [2023-08-24 18:20:19,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 160 transitions, 2457 flow, removed 261 selfloop flow, removed 12 redundant places. [2023-08-24 18:20:19,266 INFO L231 Difference]: Finished difference. Result has 131 places, 101 transitions, 1739 flow [2023-08-24 18:20:19,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1739, PETRI_PLACES=131, PETRI_TRANSITIONS=101} [2023-08-24 18:20:19,267 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 107 predicate places. [2023-08-24 18:20:19,267 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 101 transitions, 1739 flow [2023-08-24 18:20:19,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 57.785714285714285) internal successors, (809), 14 states have internal predecessors, (809), 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 18:20:19,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:19,268 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:19,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 18:20:19,473 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 18:20:19,473 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 18:20:19,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:19,474 INFO L85 PathProgramCache]: Analyzing trace with hash -454733236, now seen corresponding path program 7 times [2023-08-24 18:20:19,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:19,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102043391] [2023-08-24 18:20:19,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:19,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:19,781 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 18:20:19,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:19,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102043391] [2023-08-24 18:20:19,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102043391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:19,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413580851] [2023-08-24 18:20:19,782 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 18:20:19,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:19,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:19,785 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 18:20:19,811 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 18:20:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:19,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-24 18:20:19,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:19,929 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 18:20:19,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:20,059 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 18:20:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413580851] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:20,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:20,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-08-24 18:20:20,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84145333] [2023-08-24 18:20:20,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:20,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-24 18:20:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:20,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-24 18:20:20,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-08-24 18:20:20,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:20,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 101 transitions, 1739 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 18:20:20,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:20,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:20,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:20,911 INFO L124 PetriNetUnfolderBase]: 536/955 cut-off events. [2023-08-24 18:20:20,912 INFO L125 PetriNetUnfolderBase]: For 48547/48547 co-relation queries the response was YES. [2023-08-24 18:20:20,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9044 conditions, 955 events. 536/955 cut-off events. For 48547/48547 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4130 event pairs, 15 based on Foata normal form. 36/991 useless extension candidates. Maximal degree in co-relation 8987. Up to 339 conditions per place. [2023-08-24 18:20:20,923 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2023-08-24 18:20:20,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 247 transitions, 5057 flow [2023-08-24 18:20:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-24 18:20:20,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-24 18:20:20,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2198 transitions. [2023-08-24 18:20:20,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39138176638176636 [2023-08-24 18:20:20,927 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2198 transitions. [2023-08-24 18:20:20,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2198 transitions. [2023-08-24 18:20:20,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:20,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2198 transitions. [2023-08-24 18:20:20,931 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 18:20:20,938 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 18:20:20,939 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 18:20:20,939 INFO L175 Difference]: Start difference. First operand has 131 places, 101 transitions, 1739 flow. Second operand 36 states and 2198 transitions. [2023-08-24 18:20:20,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 247 transitions, 5057 flow [2023-08-24 18:20:21,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 247 transitions, 4412 flow, removed 289 selfloop flow, removed 12 redundant places. [2023-08-24 18:20:21,035 INFO L231 Difference]: Finished difference. Result has 172 places, 138 transitions, 2790 flow [2023-08-24 18:20:21,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2790, PETRI_PLACES=172, PETRI_TRANSITIONS=138} [2023-08-24 18:20:21,036 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 148 predicate places. [2023-08-24 18:20:21,036 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 138 transitions, 2790 flow [2023-08-24 18:20:21,037 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 18:20:21,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:21,037 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:21,052 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 18:20:21,249 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 18:20:21,250 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 18:20:21,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:21,250 INFO L85 PathProgramCache]: Analyzing trace with hash 2053048363, now seen corresponding path program 8 times [2023-08-24 18:20:21,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:21,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534402574] [2023-08-24 18:20:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:21,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:21,624 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 18:20:21,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:21,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534402574] [2023-08-24 18:20:21,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534402574] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:21,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9995536] [2023-08-24 18:20:21,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 18:20:21,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:21,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:21,626 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 18:20:21,628 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 18:20:21,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 18:20:21,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:21,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 18:20:21,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:21,792 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 18:20:21,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:22,045 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 18:20:22,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9995536] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:22,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:22,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2023-08-24 18:20:22,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884399702] [2023-08-24 18:20:22,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:22,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 18:20:22,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:22,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 18:20:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-08-24 18:20:22,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:22,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 138 transitions, 2790 flow. Second operand has 26 states, 26 states have (on average 57.46153846153846) internal successors, (1494), 26 states have internal predecessors, (1494), 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 18:20:22,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:22,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:22,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:22,725 INFO L124 PetriNetUnfolderBase]: 664/1211 cut-off events. [2023-08-24 18:20:22,725 INFO L125 PetriNetUnfolderBase]: For 101491/101491 co-relation queries the response was YES. [2023-08-24 18:20:22,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14181 conditions, 1211 events. 664/1211 cut-off events. For 101491/101491 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5495 event pairs, 108 based on Foata normal form. 32/1243 useless extension candidates. Maximal degree in co-relation 14110. Up to 467 conditions per place. [2023-08-24 18:20:22,741 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 106 selfloop transitions, 96 changer transitions 53/255 dead transitions. [2023-08-24 18:20:22,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 255 transitions, 6448 flow [2023-08-24 18:20:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-24 18:20:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-24 18:20:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1761 transitions. [2023-08-24 18:20:22,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38925729442970824 [2023-08-24 18:20:22,745 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1761 transitions. [2023-08-24 18:20:22,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1761 transitions. [2023-08-24 18:20:22,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:22,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1761 transitions. [2023-08-24 18:20:22,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 60.724137931034484) internal successors, (1761), 29 states have internal predecessors, (1761), 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 18:20:22,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 156.0) internal successors, (4680), 30 states have internal predecessors, (4680), 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 18:20:22,755 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 156.0) internal successors, (4680), 30 states have internal predecessors, (4680), 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 18:20:22,755 INFO L175 Difference]: Start difference. First operand has 172 places, 138 transitions, 2790 flow. Second operand 29 states and 1761 transitions. [2023-08-24 18:20:22,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 255 transitions, 6448 flow [2023-08-24 18:20:23,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 255 transitions, 4954 flow, removed 723 selfloop flow, removed 12 redundant places. [2023-08-24 18:20:23,033 INFO L231 Difference]: Finished difference. Result has 198 places, 170 transitions, 3157 flow [2023-08-24 18:20:23,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3157, PETRI_PLACES=198, PETRI_TRANSITIONS=170} [2023-08-24 18:20:23,034 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 174 predicate places. [2023-08-24 18:20:23,034 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 170 transitions, 3157 flow [2023-08-24 18:20:23,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 57.46153846153846) internal successors, (1494), 26 states have internal predecessors, (1494), 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 18:20:23,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:23,035 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:23,040 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 18:20:23,239 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 18:20:23,240 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 18:20:23,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:23,240 INFO L85 PathProgramCache]: Analyzing trace with hash -340043839, now seen corresponding path program 9 times [2023-08-24 18:20:23,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:23,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66149461] [2023-08-24 18:20:23,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:23,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:23,473 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 18:20:23,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:23,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66149461] [2023-08-24 18:20:23,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66149461] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:23,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379828974] [2023-08-24 18:20:23,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 18:20:23,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:23,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:23,475 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 18:20:23,501 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 18:20:23,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-24 18:20:23,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:23,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 18:20:23,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:23,616 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 18:20:23,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:23,869 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 18:20:23,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379828974] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:23,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:23,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 28 [2023-08-24 18:20:23,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137300774] [2023-08-24 18:20:23,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:23,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-24 18:20:23,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:23,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-24 18:20:23,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2023-08-24 18:20:23,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:23,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 170 transitions, 3157 flow. Second operand has 30 states, 30 states have (on average 57.36666666666667) internal successors, (1721), 30 states have internal predecessors, (1721), 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 18:20:23,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:23,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:23,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:24,856 INFO L124 PetriNetUnfolderBase]: 856/1559 cut-off events. [2023-08-24 18:20:24,856 INFO L125 PetriNetUnfolderBase]: For 172598/172598 co-relation queries the response was YES. [2023-08-24 18:20:24,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18976 conditions, 1559 events. 856/1559 cut-off events. For 172598/172598 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7035 event pairs, 20 based on Foata normal form. 32/1591 useless extension candidates. Maximal degree in co-relation 18898. Up to 623 conditions per place. [2023-08-24 18:20:24,884 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 82 selfloop transitions, 189 changer transitions 59/330 dead transitions. [2023-08-24 18:20:24,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 330 transitions, 7978 flow [2023-08-24 18:20:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-24 18:20:24,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-24 18:20:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2433 transitions. [2023-08-24 18:20:24,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38990384615384616 [2023-08-24 18:20:24,890 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2433 transitions. [2023-08-24 18:20:24,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2433 transitions. [2023-08-24 18:20:24,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:24,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2433 transitions. [2023-08-24 18:20:24,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 60.825) internal successors, (2433), 40 states have internal predecessors, (2433), 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 18:20:24,902 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 18:20:24,904 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 18:20:24,904 INFO L175 Difference]: Start difference. First operand has 198 places, 170 transitions, 3157 flow. Second operand 40 states and 2433 transitions. [2023-08-24 18:20:24,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 330 transitions, 7978 flow [2023-08-24 18:20:25,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 330 transitions, 7294 flow, removed 310 selfloop flow, removed 11 redundant places. [2023-08-24 18:20:25,175 INFO L231 Difference]: Finished difference. Result has 239 places, 211 transitions, 4434 flow [2023-08-24 18:20:25,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=2669, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4434, PETRI_PLACES=239, PETRI_TRANSITIONS=211} [2023-08-24 18:20:25,176 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 215 predicate places. [2023-08-24 18:20:25,176 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 211 transitions, 4434 flow [2023-08-24 18:20:25,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 57.36666666666667) internal successors, (1721), 30 states have internal predecessors, (1721), 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 18:20:25,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:25,177 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:25,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-24 18:20:25,377 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 18:20:25,378 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 18:20:25,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:25,378 INFO L85 PathProgramCache]: Analyzing trace with hash -184889386, now seen corresponding path program 10 times [2023-08-24 18:20:25,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:25,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640391448] [2023-08-24 18:20:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:25,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:25,662 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 18:20:25,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:25,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640391448] [2023-08-24 18:20:25,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640391448] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:25,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968166617] [2023-08-24 18:20:25,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 18:20:25,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:25,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:25,664 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 18:20:25,709 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 18:20:25,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 18:20:25,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:25,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-24 18:20:25,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:25,839 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 18:20:25,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:26,050 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 18:20:26,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968166617] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:26,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:26,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 25 [2023-08-24 18:20:26,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750348497] [2023-08-24 18:20:26,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:26,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-24 18:20:26,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:26,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-24 18:20:26,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=548, Unknown=0, NotChecked=0, Total=702 [2023-08-24 18:20:26,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:26,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 211 transitions, 4434 flow. Second operand has 27 states, 27 states have (on average 57.44444444444444) internal successors, (1551), 27 states have internal predecessors, (1551), 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 18:20:26,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:26,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:26,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:27,392 INFO L124 PetriNetUnfolderBase]: 876/1587 cut-off events. [2023-08-24 18:20:27,393 INFO L125 PetriNetUnfolderBase]: For 241706/241706 co-relation queries the response was YES. [2023-08-24 18:20:27,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21410 conditions, 1587 events. 876/1587 cut-off events. For 241706/241706 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7177 event pairs, 12 based on Foata normal form. 24/1611 useless extension candidates. Maximal degree in co-relation 21318. Up to 631 conditions per place. [2023-08-24 18:20:27,416 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 70 selfloop transitions, 206 changer transitions 84/360 dead transitions. [2023-08-24 18:20:27,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 360 transitions, 9406 flow [2023-08-24 18:20:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-24 18:20:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-24 18:20:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2739 transitions. [2023-08-24 18:20:27,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901709401709402 [2023-08-24 18:20:27,427 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2739 transitions. [2023-08-24 18:20:27,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2739 transitions. [2023-08-24 18:20:27,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:27,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2739 transitions. [2023-08-24 18:20:27,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 60.86666666666667) internal successors, (2739), 45 states have internal predecessors, (2739), 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 18:20:27,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 156.0) internal successors, (7176), 46 states have internal predecessors, (7176), 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 18:20:27,454 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 156.0) internal successors, (7176), 46 states have internal predecessors, (7176), 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 18:20:27,454 INFO L175 Difference]: Start difference. First operand has 239 places, 211 transitions, 4434 flow. Second operand 45 states and 2739 transitions. [2023-08-24 18:20:27,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 360 transitions, 9406 flow [2023-08-24 18:20:27,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 360 transitions, 8396 flow, removed 416 selfloop flow, removed 17 redundant places. [2023-08-24 18:20:27,918 INFO L231 Difference]: Finished difference. Result has 276 places, 224 transitions, 4726 flow [2023-08-24 18:20:27,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4726, PETRI_PLACES=276, PETRI_TRANSITIONS=224} [2023-08-24 18:20:27,918 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 252 predicate places. [2023-08-24 18:20:27,919 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 224 transitions, 4726 flow [2023-08-24 18:20:27,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 57.44444444444444) internal successors, (1551), 27 states have internal predecessors, (1551), 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 18:20:27,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:27,919 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:27,925 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 18:20:28,124 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 18:20:28,125 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 18:20:28,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:28,125 INFO L85 PathProgramCache]: Analyzing trace with hash 251298398, now seen corresponding path program 11 times [2023-08-24 18:20:28,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:28,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513769790] [2023-08-24 18:20:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:28,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:28,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:28,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513769790] [2023-08-24 18:20:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513769790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:28,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529583034] [2023-08-24 18:20:28,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 18:20:28,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:28,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:28,486 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 18:20:28,494 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 18:20:28,578 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-08-24 18:20:28,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:28,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-24 18:20:28,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:28,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 18:20:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:28,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529583034] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 18:20:28,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 18:20:28,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 45 [2023-08-24 18:20:28,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598382781] [2023-08-24 18:20:28,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 18:20:28,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-08-24 18:20:28,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-08-24 18:20:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1677, Unknown=0, NotChecked=0, Total=2162 [2023-08-24 18:20:28,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 156 [2023-08-24 18:20:29,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 224 transitions, 4726 flow. Second operand has 47 states, 47 states have (on average 57.234042553191486) internal successors, (2690), 47 states have internal predecessors, (2690), 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 18:20:29,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:29,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 156 [2023-08-24 18:20:29,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:30,493 INFO L124 PetriNetUnfolderBase]: 984/1779 cut-off events. [2023-08-24 18:20:30,493 INFO L125 PetriNetUnfolderBase]: For 322417/322417 co-relation queries the response was YES. [2023-08-24 18:20:30,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25976 conditions, 1779 events. 984/1779 cut-off events. For 322417/322417 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 8195 event pairs, 29 based on Foata normal form. 12/1791 useless extension candidates. Maximal degree in co-relation 25874. Up to 707 conditions per place. [2023-08-24 18:20:30,517 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 82 selfloop transitions, 225 changer transitions 90/397 dead transitions. [2023-08-24 18:20:30,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 397 transitions, 11022 flow [2023-08-24 18:20:30,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 18:20:30,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 18:20:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2918 transitions. [2023-08-24 18:20:30,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38969017094017094 [2023-08-24 18:20:30,523 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2918 transitions. [2023-08-24 18:20:30,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2918 transitions. [2023-08-24 18:20:30,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:30,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2918 transitions. [2023-08-24 18:20:30,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 60.791666666666664) internal successors, (2918), 48 states have internal predecessors, (2918), 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 18:20:30,536 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 18:20:30,537 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 18:20:30,538 INFO L175 Difference]: Start difference. First operand has 276 places, 224 transitions, 4726 flow. Second operand 48 states and 2918 transitions. [2023-08-24 18:20:30,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 397 transitions, 11022 flow [2023-08-24 18:20:31,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 397 transitions, 9518 flow, removed 577 selfloop flow, removed 35 redundant places. [2023-08-24 18:20:31,161 INFO L231 Difference]: Finished difference. Result has 296 places, 251 transitions, 5159 flow [2023-08-24 18:20:31,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3734, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=5159, PETRI_PLACES=296, PETRI_TRANSITIONS=251} [2023-08-24 18:20:31,162 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 272 predicate places. [2023-08-24 18:20:31,162 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 251 transitions, 5159 flow [2023-08-24 18:20:31,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 57.234042553191486) internal successors, (2690), 47 states have internal predecessors, (2690), 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 18:20:31,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:20:31,163 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:20:31,167 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 18:20:31,363 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 18:20:31,363 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 18:20:31,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:20:31,364 INFO L85 PathProgramCache]: Analyzing trace with hash 267792798, now seen corresponding path program 12 times [2023-08-24 18:20:31,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:20:31,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40752585] [2023-08-24 18:20:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:20:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:20:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:20:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:31,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:20:31,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40752585] [2023-08-24 18:20:31,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40752585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 18:20:31,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196627186] [2023-08-24 18:20:31,520 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 18:20:31,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 18:20:31,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:20:31,521 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 18:20:31,528 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 18:20:31,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-08-24 18:20:31,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 18:20:31,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 18:20:31,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 18:20:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:20:31,665 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 18:20:31,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196627186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:20:31,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 18:20:31,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2023-08-24 18:20:31,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149928628] [2023-08-24 18:20:31,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:20:31,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 18:20:31,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:20:31,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 18:20:31,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-08-24 18:20:31,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 156 [2023-08-24 18:20:31,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 251 transitions, 5159 flow. Second operand has 13 states, 13 states have (on average 57.23076923076923) internal successors, (744), 13 states have internal predecessors, (744), 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 18:20:31,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:20:31,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 156 [2023-08-24 18:20:31,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:20:33,404 INFO L124 PetriNetUnfolderBase]: 4367/6839 cut-off events. [2023-08-24 18:20:33,404 INFO L125 PetriNetUnfolderBase]: For 1318302/1318302 co-relation queries the response was YES. [2023-08-24 18:20:33,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93226 conditions, 6839 events. 4367/6839 cut-off events. For 1318302/1318302 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 36876 event pairs, 94 based on Foata normal form. 360/7199 useless extension candidates. Maximal degree in co-relation 93116. Up to 2590 conditions per place. [2023-08-24 18:20:33,454 INFO L140 encePairwiseOnDemand]: 153/156 looper letters, 0 selfloop transitions, 0 changer transitions 1426/1426 dead transitions. [2023-08-24 18:20:33,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1426 transitions, 29178 flow [2023-08-24 18:20:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 18:20:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 18:20:33,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 812 transitions. [2023-08-24 18:20:33,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40039447731755423 [2023-08-24 18:20:33,457 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 812 transitions. [2023-08-24 18:20:33,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 812 transitions. [2023-08-24 18:20:33,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:20:33,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 812 transitions. [2023-08-24 18:20:33,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.46153846153846) internal successors, (812), 13 states have internal predecessors, (812), 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 18:20:33,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 156.0) internal successors, (2184), 14 states have internal predecessors, (2184), 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 18:20:33,461 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 156.0) internal successors, (2184), 14 states have internal predecessors, (2184), 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 18:20:33,461 INFO L175 Difference]: Start difference. First operand has 296 places, 251 transitions, 5159 flow. Second operand 13 states and 812 transitions. [2023-08-24 18:20:33,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 1426 transitions, 29178 flow [2023-08-24 18:20:35,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 1426 transitions, 25717 flow, removed 374 selfloop flow, removed 45 redundant places. [2023-08-24 18:20:35,427 INFO L231 Difference]: Finished difference. Result has 262 places, 0 transitions, 0 flow [2023-08-24 18:20:35,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=3809, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=262, PETRI_TRANSITIONS=0} [2023-08-24 18:20:35,427 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 238 predicate places. [2023-08-24 18:20:35,427 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 0 transitions, 0 flow [2023-08-24 18:20:35,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 57.23076923076923) internal successors, (744), 13 states have internal predecessors, (744), 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 18:20:35,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 13 remaining) [2023-08-24 18:20:35,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-08-24 18:20:35,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (10 of 13 remaining) [2023-08-24 18:20:35,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 13 remaining) [2023-08-24 18:20:35,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 13 remaining) [2023-08-24 18:20:35,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-08-24 18:20:35,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-08-24 18:20:35,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-08-24 18:20:35,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-08-24 18:20:35,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-08-24 18:20:35,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-08-24 18:20:35,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-08-24 18:20:35,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-08-24 18:20:35,445 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 18:20:35,636 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 18:20:35,637 INFO L445 BasicCegarLoop]: Path program histogram: [12, 2, 1, 1, 1] [2023-08-24 18:20:35,641 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 18:20:35,641 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 18:20:35,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 06:20:35 BasicIcfg [2023-08-24 18:20:35,645 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 18:20:35,645 INFO L158 Benchmark]: Toolchain (without parser) took 25098.80ms. Allocated memory was 371.2MB in the beginning and 870.3MB in the end (delta: 499.1MB). Free memory was 346.1MB in the beginning and 524.3MB in the end (delta: -178.3MB). Peak memory consumption was 582.5MB. Max. memory is 16.0GB. [2023-08-24 18:20:35,645 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 371.2MB. Free memory is still 347.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 18:20:35,645 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.04ms. Allocated memory is still 371.2MB. Free memory was 345.7MB in the beginning and 326.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 18:20:35,646 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.43ms. Allocated memory is still 371.2MB. Free memory was 326.3MB in the beginning and 324.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 18:20:35,646 INFO L158 Benchmark]: Boogie Preprocessor took 29.41ms. Allocated memory is still 371.2MB. Free memory was 324.2MB in the beginning and 322.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 18:20:35,646 INFO L158 Benchmark]: RCFGBuilder took 498.49ms. Allocated memory is still 371.2MB. Free memory was 322.8MB in the beginning and 306.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-24 18:20:35,646 INFO L158 Benchmark]: TraceAbstraction took 24038.57ms. Allocated memory was 371.2MB in the beginning and 870.3MB in the end (delta: 499.1MB). Free memory was 305.7MB in the beginning and 524.3MB in the end (delta: -218.6MB). Peak memory consumption was 542.6MB. Max. memory is 16.0GB. [2023-08-24 18:20:35,647 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 371.2MB. Free memory is still 347.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 475.04ms. Allocated memory is still 371.2MB. Free memory was 345.7MB in the beginning and 326.3MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.43ms. Allocated memory is still 371.2MB. Free memory was 326.3MB in the beginning and 324.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.41ms. Allocated memory is still 371.2MB. Free memory was 324.2MB in the beginning and 322.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 498.49ms. Allocated memory is still 371.2MB. Free memory was 322.8MB in the beginning and 306.4MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 24038.57ms. Allocated memory was 371.2MB in the beginning and 870.3MB in the end (delta: 499.1MB). Free memory was 305.7MB in the beginning and 524.3MB in the end (delta: -218.6MB). Peak memory consumption was 542.6MB. 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: 2.1s, 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 - PositiveResult [Line: 716]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 719]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 693]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 698]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 698]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 706]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 706]: there are no data races For all program executions holds that there are no data races at this location - 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: 23.9s, OverallIterations: 17, TraceHistogramMax: 11, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2945 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2945 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 305 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2633 IncrementalHoareTripleChecker+Invalid, 2938 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 305 mSolverCounterUnsat, 0 mSDtfsCounter, 2633 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 703 GetRequests, 221 SyntacticMatches, 24 SemanticMatches, 458 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7028 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5159occurred in iteration=16, InterpolantAutomatonStates: 317, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 2174 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1889 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 36 InterpolantComputations, 8 PerfectInterpolantSequences, 190/944 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 - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 18:20:35,661 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...