/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:16:38,885 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:16:38,953 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-SemanticLbe.epf [2023-11-17 11:16:38,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:16:38,978 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:16:38,978 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:16:38,979 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:16:38,979 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:16:38,979 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:16:38,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:16:38,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:16:38,982 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:16:38,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:16:38,984 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:16:38,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:16:38,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:16:38,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:16:38,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:16:38,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:16:38,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:16:38,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:16:38,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:16:38,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:16:38,986 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:16:38,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:16:38,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:16:38,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:16:38,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:16:38,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:16:38,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:16:38,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:16:38,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:16:38,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:16:39,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:16:39,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:16:39,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:16:39,168 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:16:39,170 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:16:39,171 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-11-17 11:16:40,090 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:16:40,294 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:16:40,295 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2023-11-17 11:16:40,306 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531342c8d/fcc37d38c93643f8afc6788325365f68/FLAG8d726b448 [2023-11-17 11:16:40,321 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531342c8d/fcc37d38c93643f8afc6788325365f68 [2023-11-17 11:16:40,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:16:40,324 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:16:40,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:16:40,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:16:40,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:16:40,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfd0dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40, skipping insertion in model container [2023-11-17 11:16:40,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,376 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:16:40,635 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2023-11-17 11:16:40,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:16:40,645 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:16:40,679 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2023-11-17 11:16:40,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:16:40,703 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:16:40,703 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:16:40,708 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:16:40,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40 WrapperNode [2023-11-17 11:16:40,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:16:40,709 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:16:40,710 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:16:40,710 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:16:40,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,725 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,740 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-11-17 11:16:40,740 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:16:40,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:16:40,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:16:40,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:16:40,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,764 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,765 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:16:40,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:16:40,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:16:40,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:16:40,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (1/1) ... [2023-11-17 11:16:40,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:16:40,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:40,800 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) [2023-11-17 11:16:40,821 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 [2023-11-17 11:16:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 11:16:40,825 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 11:16:40,825 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 11:16:40,826 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 11:16:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:16:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:16:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:16:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:16:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:16:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:16:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:16:40,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:16:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:16:40,828 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:16:40,919 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:16:40,921 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:16:41,031 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:16:41,090 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:16:41,090 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 11:16:41,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:16:41 BoogieIcfgContainer [2023-11-17 11:16:41,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:16:41,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:16:41,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:16:41,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:16:41,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:16:40" (1/3) ... [2023-11-17 11:16:41,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317eff28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:16:41, skipping insertion in model container [2023-11-17 11:16:41,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:40" (2/3) ... [2023-11-17 11:16:41,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317eff28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:16:41, skipping insertion in model container [2023-11-17 11:16:41,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:16:41" (3/3) ... [2023-11-17 11:16:41,096 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2023-11-17 11:16:41,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:16:41,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:16:41,108 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:16:41,132 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:16:41,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2023-11-17 11:16:41,185 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2023-11-17 11:16:41,185 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:16:41,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-11-17 11:16:41,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2023-11-17 11:16:41,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2023-11-17 11:16:41,191 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:16:41,210 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 22 transitions, 50 flow [2023-11-17 11:16:41,216 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 22 transitions, 50 flow [2023-11-17 11:16:41,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 50 flow [2023-11-17 11:16:41,229 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2023-11-17 11:16:41,229 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:16:41,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-11-17 11:16:41,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 230 [2023-11-17 11:16:41,455 INFO L134 LiptonReduction]: Checked pairs total: 219 [2023-11-17 11:16:41,455 INFO L136 LiptonReduction]: Total number of compositions: 12 [2023-11-17 11:16:41,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:16:41,470 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@263502df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:16:41,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:16:41,475 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:16:41,475 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-11-17 11:16:41,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:16:41,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:41,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:16:41,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:41,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:41,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1048666412, now seen corresponding path program 1 times [2023-11-17 11:16:41,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:41,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014323291] [2023-11-17 11:16:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:41,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:41,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:41,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014323291] [2023-11-17 11:16:41,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014323291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:41,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:41,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:16:41,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184156746] [2023-11-17 11:16:41,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:41,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:16:41,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:41,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:16:41,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:16:41,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:41,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 32 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-17 11:16:41,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:41,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:41,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:41,875 INFO L124 PetriNetUnfolderBase]: 94/152 cut-off events. [2023-11-17 11:16:41,876 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:16:41,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 389 event pairs, 23 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-11-17 11:16:41,879 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-11-17 11:16:41,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-11-17 11:16:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:16:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:16:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2023-11-17 11:16:41,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2023-11-17 11:16:41,888 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 47 transitions. [2023-11-17 11:16:41,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 47 transitions. [2023-11-17 11:16:41,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:41,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 47 transitions. [2023-11-17 11:16:41,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2023-11-17 11:16:41,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 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) [2023-11-17 11:16:41,895 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 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) [2023-11-17 11:16:41,896 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 32 flow. Second operand 4 states and 47 transitions. [2023-11-17 11:16:41,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-11-17 11:16:41,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:16:41,902 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-11-17 11:16:41,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-11-17 11:16:41,906 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-11-17 11:16:41,906 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-11-17 11:16:41,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2023-11-17 11:16:41,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:41,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:41,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:16:41,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:41,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:41,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1549308775, now seen corresponding path program 1 times [2023-11-17 11:16:41,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:41,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618718858] [2023-11-17 11:16:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:41,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:41,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:42,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:42,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618718858] [2023-11-17 11:16:42,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618718858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:42,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:42,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:16:42,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471937285] [2023-11-17 11:16:42,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:42,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:16:42,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:42,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:16:42,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:16:42,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:42,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2023-11-17 11:16:42,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:42,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:42,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:42,126 INFO L124 PetriNetUnfolderBase]: 126/217 cut-off events. [2023-11-17 11:16:42,126 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-17 11:16:42,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 657 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-11-17 11:16:42,128 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-11-17 11:16:42,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-11-17 11:16:42,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:16:42,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:16:42,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2023-11-17 11:16:42,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2023-11-17 11:16:42,131 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 68 transitions. [2023-11-17 11:16:42,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 68 transitions. [2023-11-17 11:16:42,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:42,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 68 transitions. [2023-11-17 11:16:42,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2023-11-17 11:16:42,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 36.0) internal successors, (252), 7 states have internal predecessors, (252), 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) [2023-11-17 11:16:42,134 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 36.0) internal successors, (252), 7 states have internal predecessors, (252), 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) [2023-11-17 11:16:42,134 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 68 transitions. [2023-11-17 11:16:42,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-11-17 11:16:42,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:16:42,137 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-11-17 11:16:42,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-11-17 11:16:42,138 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-11-17 11:16:42,138 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-11-17 11:16:42,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2023-11-17 11:16:42,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:42,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:42,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:16:42,139 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:42,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:42,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1549307845, now seen corresponding path program 2 times [2023-11-17 11:16:42,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:42,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104365395] [2023-11-17 11:16:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:42,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:42,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:42,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104365395] [2023-11-17 11:16:42,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104365395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:42,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:42,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:16:42,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896192408] [2023-11-17 11:16:42,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:42,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:16:42,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:42,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:16:42,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:16:42,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:42,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2023-11-17 11:16:42,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:42,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:42,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:42,275 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-11-17 11:16:42,275 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2023-11-17 11:16:42,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 629 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2023-11-17 11:16:42,277 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-11-17 11:16:42,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2023-11-17 11:16:42,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:16:42,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:16:42,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2023-11-17 11:16:42,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2023-11-17 11:16:42,278 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 58 transitions. [2023-11-17 11:16:42,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 58 transitions. [2023-11-17 11:16:42,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:42,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 58 transitions. [2023-11-17 11:16:42,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2023-11-17 11:16:42,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 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) [2023-11-17 11:16:42,279 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 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) [2023-11-17 11:16:42,279 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 58 transitions. [2023-11-17 11:16:42,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2023-11-17 11:16:42,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-17 11:16:42,282 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2023-11-17 11:16:42,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-11-17 11:16:42,282 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-11-17 11:16:42,282 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2023-11-17 11:16:42,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2023-11-17 11:16:42,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:42,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:42,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:16:42,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:42,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:42,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1282021618, now seen corresponding path program 1 times [2023-11-17 11:16:42,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:42,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174700535] [2023-11-17 11:16:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:42,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:42,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:42,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174700535] [2023-11-17 11:16:42,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174700535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:42,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:42,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:16:42,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152656282] [2023-11-17 11:16:42,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:42,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:16:42,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:16:42,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:16:42,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:42,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2023-11-17 11:16:42,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:42,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:42,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:42,485 INFO L124 PetriNetUnfolderBase]: 126/219 cut-off events. [2023-11-17 11:16:42,485 INFO L125 PetriNetUnfolderBase]: For 529/529 co-relation queries the response was YES. [2023-11-17 11:16:42,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 219 events. 126/219 cut-off events. For 529/529 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 715 event pairs, 19 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 772. Up to 86 conditions per place. [2023-11-17 11:16:42,486 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 32 selfloop transitions, 16 changer transitions 11/59 dead transitions. [2023-11-17 11:16:42,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 425 flow [2023-11-17 11:16:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 11:16:42,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 11:16:42,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2023-11-17 11:16:42,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2993827160493827 [2023-11-17 11:16:42,489 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 97 transitions. [2023-11-17 11:16:42,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 97 transitions. [2023-11-17 11:16:42,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:42,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 97 transitions. [2023-11-17 11:16:42,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 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) [2023-11-17 11:16:42,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 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) [2023-11-17 11:16:42,493 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 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) [2023-11-17 11:16:42,493 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 9 states and 97 transitions. [2023-11-17 11:16:42,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 425 flow [2023-11-17 11:16:42,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 59 transitions, 388 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-17 11:16:42,498 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 251 flow [2023-11-17 11:16:42,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-17 11:16:42,499 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-11-17 11:16:42,500 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 251 flow [2023-11-17 11:16:42,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2023-11-17 11:16:42,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:42,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:42,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:16:42,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:42,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:42,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1281993718, now seen corresponding path program 2 times [2023-11-17 11:16:42,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:42,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56110714] [2023-11-17 11:16:42,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:42,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:42,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:42,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56110714] [2023-11-17 11:16:42,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56110714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:42,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:42,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:16:42,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762156245] [2023-11-17 11:16:42,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:42,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:16:42,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:42,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:16:42,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:16:42,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:42,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2023-11-17 11:16:42,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:42,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:42,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:42,664 INFO L124 PetriNetUnfolderBase]: 162/283 cut-off events. [2023-11-17 11:16:42,666 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2023-11-17 11:16:42,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 283 events. 162/283 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 940 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1066. Up to 77 conditions per place. [2023-11-17 11:16:42,668 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 38 selfloop transitions, 20 changer transitions 3/61 dead transitions. [2023-11-17 11:16:42,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 497 flow [2023-11-17 11:16:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:16:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:16:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2023-11-17 11:16:42,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2986111111111111 [2023-11-17 11:16:42,672 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 86 transitions. [2023-11-17 11:16:42,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 86 transitions. [2023-11-17 11:16:42,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:42,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 86 transitions. [2023-11-17 11:16:42,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 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) [2023-11-17 11:16:42,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 36.0) internal successors, (324), 9 states have internal predecessors, (324), 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) [2023-11-17 11:16:42,674 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 36.0) internal successors, (324), 9 states have internal predecessors, (324), 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) [2023-11-17 11:16:42,674 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 251 flow. Second operand 8 states and 86 transitions. [2023-11-17 11:16:42,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 497 flow [2023-11-17 11:16:42,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 467 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-17 11:16:42,678 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 344 flow [2023-11-17 11:16:42,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-11-17 11:16:42,680 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 33 predicate places. [2023-11-17 11:16:42,680 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 344 flow [2023-11-17 11:16:42,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2023-11-17 11:16:42,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:42,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:42,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:16:42,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:42,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1046048068, now seen corresponding path program 3 times [2023-11-17 11:16:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:42,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979551551] [2023-11-17 11:16:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:42,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:42,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:42,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979551551] [2023-11-17 11:16:42,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979551551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:42,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:42,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:16:42,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948827453] [2023-11-17 11:16:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:42,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:16:42,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:42,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:16:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:16:42,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:42,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2023-11-17 11:16:42,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:42,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:42,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:42,842 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-11-17 11:16:42,842 INFO L125 PetriNetUnfolderBase]: For 1221/1221 co-relation queries the response was YES. [2023-11-17 11:16:42,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 263 events. 150/263 cut-off events. For 1221/1221 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 884 event pairs, 22 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1163. Up to 65 conditions per place. [2023-11-17 11:16:42,844 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 30 selfloop transitions, 20 changer transitions 8/58 dead transitions. [2023-11-17 11:16:42,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 566 flow [2023-11-17 11:16:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:16:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:16:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2023-11-17 11:16:42,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2023-11-17 11:16:42,846 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 75 transitions. [2023-11-17 11:16:42,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 75 transitions. [2023-11-17 11:16:42,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:42,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 75 transitions. [2023-11-17 11:16:42,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 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) [2023-11-17 11:16:42,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 36.0) internal successors, (288), 8 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) [2023-11-17 11:16:42,847 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 36.0) internal successors, (288), 8 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) [2023-11-17 11:16:42,847 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 344 flow. Second operand 7 states and 75 transitions. [2023-11-17 11:16:42,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 566 flow [2023-11-17 11:16:42,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 531 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-17 11:16:42,852 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 388 flow [2023-11-17 11:16:42,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=388, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2023-11-17 11:16:42,854 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 38 predicate places. [2023-11-17 11:16:42,854 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 388 flow [2023-11-17 11:16:42,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2023-11-17 11:16:42,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:42,855 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:42,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:16:42,855 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:42,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:42,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1932250210, now seen corresponding path program 4 times [2023-11-17 11:16:42,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:42,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833190170] [2023-11-17 11:16:42,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:42,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:42,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:42,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833190170] [2023-11-17 11:16:42,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833190170] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:42,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682901589] [2023-11-17 11:16:42,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:16:42,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:42,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:42,939 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) [2023-11-17 11:16:42,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 11:16:42,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:16:42,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:42,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 11:16:43,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:43,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:43,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682901589] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:43,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:43,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 11:16:43,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941687176] [2023-11-17 11:16:43,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:43,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 11:16:43,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 11:16:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-17 11:16:43,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:43,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 388 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2023-11-17 11:16:43,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:43,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:43,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:43,284 INFO L124 PetriNetUnfolderBase]: 198/343 cut-off events. [2023-11-17 11:16:43,284 INFO L125 PetriNetUnfolderBase]: For 2134/2134 co-relation queries the response was YES. [2023-11-17 11:16:43,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 343 events. 198/343 cut-off events. For 2134/2134 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1142 event pairs, 18 based on Foata normal form. 16/359 useless extension candidates. Maximal degree in co-relation 1628. Up to 87 conditions per place. [2023-11-17 11:16:43,286 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 34 selfloop transitions, 35 changer transitions 22/91 dead transitions. [2023-11-17 11:16:43,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 946 flow [2023-11-17 11:16:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 11:16:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 11:16:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 144 transitions. [2023-11-17 11:16:43,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2023-11-17 11:16:43,287 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 144 transitions. [2023-11-17 11:16:43,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 144 transitions. [2023-11-17 11:16:43,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:43,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 144 transitions. [2023-11-17 11:16:43,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 10.285714285714286) internal successors, (144), 14 states have internal predecessors, (144), 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) [2023-11-17 11:16:43,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 36.0) internal successors, (540), 15 states have internal predecessors, (540), 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) [2023-11-17 11:16:43,288 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 36.0) internal successors, (540), 15 states have internal predecessors, (540), 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) [2023-11-17 11:16:43,289 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 388 flow. Second operand 14 states and 144 transitions. [2023-11-17 11:16:43,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 946 flow [2023-11-17 11:16:43,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 884 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-11-17 11:16:43,294 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 689 flow [2023-11-17 11:16:43,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=689, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2023-11-17 11:16:43,294 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 51 predicate places. [2023-11-17 11:16:43,294 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 689 flow [2023-11-17 11:16:43,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 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) [2023-11-17 11:16:43,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:43,295 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:43,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 11:16:43,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:43,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:43,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash -3296339, now seen corresponding path program 5 times [2023-11-17 11:16:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:43,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38325014] [2023-11-17 11:16:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:43,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:43,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:43,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38325014] [2023-11-17 11:16:43,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38325014] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:43,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164526780] [2023-11-17 11:16:43,604 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:16:43,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:43,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:43,765 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) [2023-11-17 11:16:43,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 11:16:43,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 11:16:43,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:43,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:16:43,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:43,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:43,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164526780] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:43,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:43,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 11:16:43,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701863636] [2023-11-17 11:16:43,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:43,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 11:16:43,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:43,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 11:16:43,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-17 11:16:43,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:43,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 689 flow. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 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) [2023-11-17 11:16:43,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:43,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:43,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:44,172 INFO L124 PetriNetUnfolderBase]: 254/455 cut-off events. [2023-11-17 11:16:44,172 INFO L125 PetriNetUnfolderBase]: For 4616/4616 co-relation queries the response was YES. [2023-11-17 11:16:44,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 455 events. 254/455 cut-off events. For 4616/4616 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1597 event pairs, 55 based on Foata normal form. 32/487 useless extension candidates. Maximal degree in co-relation 2400. Up to 249 conditions per place. [2023-11-17 11:16:44,175 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 65 selfloop transitions, 25 changer transitions 27/117 dead transitions. [2023-11-17 11:16:44,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 1455 flow [2023-11-17 11:16:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 11:16:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 11:16:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 163 transitions. [2023-11-17 11:16:44,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2829861111111111 [2023-11-17 11:16:44,177 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 163 transitions. [2023-11-17 11:16:44,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 163 transitions. [2023-11-17 11:16:44,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:44,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 163 transitions. [2023-11-17 11:16:44,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 10.1875) internal successors, (163), 16 states have internal predecessors, (163), 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) [2023-11-17 11:16:44,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 36.0) internal successors, (612), 17 states have internal predecessors, (612), 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) [2023-11-17 11:16:44,178 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 36.0) internal successors, (612), 17 states have internal predecessors, (612), 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) [2023-11-17 11:16:44,178 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 689 flow. Second operand 16 states and 163 transitions. [2023-11-17 11:16:44,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 1455 flow [2023-11-17 11:16:44,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 1094 flow, removed 167 selfloop flow, removed 5 redundant places. [2023-11-17 11:16:44,189 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 762 flow [2023-11-17 11:16:44,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=762, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2023-11-17 11:16:44,191 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 71 predicate places. [2023-11-17 11:16:44,191 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 762 flow [2023-11-17 11:16:44,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 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) [2023-11-17 11:16:44,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:44,191 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:44,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-17 11:16:44,396 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,SelfDestructingSolverStorable7 [2023-11-17 11:16:44,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:44,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:44,397 INFO L85 PathProgramCache]: Analyzing trace with hash 852010315, now seen corresponding path program 6 times [2023-11-17 11:16:44,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:44,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441606164] [2023-11-17 11:16:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:44,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:44,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:44,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:44,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441606164] [2023-11-17 11:16:44,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441606164] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:44,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359000142] [2023-11-17 11:16:44,484 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 11:16:44,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:44,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:44,485 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) [2023-11-17 11:16:44,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 11:16:44,547 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 11:16:44,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:44,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:16:44,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:44,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:44,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359000142] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:44,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:44,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 11:16:44,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466262302] [2023-11-17 11:16:44,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:44,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 11:16:44,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 11:16:44,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-17 11:16:44,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:44,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 762 flow. Second operand has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 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) [2023-11-17 11:16:44,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:44,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:44,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:44,986 INFO L124 PetriNetUnfolderBase]: 408/747 cut-off events. [2023-11-17 11:16:44,986 INFO L125 PetriNetUnfolderBase]: For 12707/12707 co-relation queries the response was YES. [2023-11-17 11:16:44,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4031 conditions, 747 events. 408/747 cut-off events. For 12707/12707 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3282 event pairs, 42 based on Foata normal form. 32/779 useless extension candidates. Maximal degree in co-relation 3987. Up to 227 conditions per place. [2023-11-17 11:16:44,991 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 73 selfloop transitions, 71 changer transitions 37/181 dead transitions. [2023-11-17 11:16:44,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 181 transitions, 2078 flow [2023-11-17 11:16:44,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 11:16:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 11:16:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 224 transitions. [2023-11-17 11:16:44,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2828282828282828 [2023-11-17 11:16:44,992 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 224 transitions. [2023-11-17 11:16:44,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 224 transitions. [2023-11-17 11:16:44,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:44,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 224 transitions. [2023-11-17 11:16:44,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 10.181818181818182) internal successors, (224), 22 states have internal predecessors, (224), 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) [2023-11-17 11:16:44,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 36.0) internal successors, (828), 23 states have internal predecessors, (828), 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) [2023-11-17 11:16:44,994 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 36.0) internal successors, (828), 23 states have internal predecessors, (828), 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) [2023-11-17 11:16:44,994 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 762 flow. Second operand 22 states and 224 transitions. [2023-11-17 11:16:44,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 181 transitions, 2078 flow [2023-11-17 11:16:45,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 181 transitions, 1986 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-11-17 11:16:45,031 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 1489 flow [2023-11-17 11:16:45,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1489, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2023-11-17 11:16:45,032 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 102 predicate places. [2023-11-17 11:16:45,032 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 1489 flow [2023-11-17 11:16:45,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 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) [2023-11-17 11:16:45,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:45,033 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:45,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 11:16:45,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:45,238 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:45,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1696550901, now seen corresponding path program 7 times [2023-11-17 11:16:45,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:45,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153095154] [2023-11-17 11:16:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:45,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:45,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:45,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153095154] [2023-11-17 11:16:45,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153095154] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:45,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981781660] [2023-11-17 11:16:45,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 11:16:45,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:45,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:45,317 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) [2023-11-17 11:16:45,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 11:16:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:45,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:16:45,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:45,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:45,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:45,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981781660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:45,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:45,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 11:16:45,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596943797] [2023-11-17 11:16:45,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:45,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 11:16:45,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:45,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 11:16:45,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-17 11:16:45,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:45,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 1489 flow. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 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) [2023-11-17 11:16:45,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:45,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:45,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:45,871 INFO L124 PetriNetUnfolderBase]: 608/1103 cut-off events. [2023-11-17 11:16:45,872 INFO L125 PetriNetUnfolderBase]: For 39442/39442 co-relation queries the response was YES. [2023-11-17 11:16:45,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7960 conditions, 1103 events. 608/1103 cut-off events. For 39442/39442 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5304 event pairs, 28 based on Foata normal form. 36/1139 useless extension candidates. Maximal degree in co-relation 7901. Up to 355 conditions per place. [2023-11-17 11:16:45,880 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 71 selfloop transitions, 133 changer transitions 41/245 dead transitions. [2023-11-17 11:16:45,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 245 transitions, 3799 flow [2023-11-17 11:16:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 11:16:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 11:16:45,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 275 transitions. [2023-11-17 11:16:45,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2829218106995885 [2023-11-17 11:16:45,883 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 275 transitions. [2023-11-17 11:16:45,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 275 transitions. [2023-11-17 11:16:45,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:45,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 275 transitions. [2023-11-17 11:16:45,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 10.185185185185185) internal successors, (275), 27 states have internal predecessors, (275), 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) [2023-11-17 11:16:45,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 36.0) internal successors, (1008), 28 states have internal predecessors, (1008), 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) [2023-11-17 11:16:45,886 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 36.0) internal successors, (1008), 28 states have internal predecessors, (1008), 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) [2023-11-17 11:16:45,886 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 1489 flow. Second operand 27 states and 275 transitions. [2023-11-17 11:16:45,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 245 transitions, 3799 flow [2023-11-17 11:16:45,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 245 transitions, 3465 flow, removed 153 selfloop flow, removed 7 redundant places. [2023-11-17 11:16:45,940 INFO L231 Difference]: Finished difference. Result has 154 places, 157 transitions, 2642 flow [2023-11-17 11:16:45,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2642, PETRI_PLACES=154, PETRI_TRANSITIONS=157} [2023-11-17 11:16:45,941 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 136 predicate places. [2023-11-17 11:16:45,941 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 157 transitions, 2642 flow [2023-11-17 11:16:45,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 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) [2023-11-17 11:16:45,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:45,941 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:45,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 11:16:46,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:46,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:46,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:46,147 INFO L85 PathProgramCache]: Analyzing trace with hash 577871889, now seen corresponding path program 8 times [2023-11-17 11:16:46,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:46,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703667101] [2023-11-17 11:16:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:46,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:46,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:46,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703667101] [2023-11-17 11:16:46,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703667101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:46,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451769416] [2023-11-17 11:16:46,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:16:46,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:46,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:46,260 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) [2023-11-17 11:16:46,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 11:16:46,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:16:46,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:46,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 11:16:46,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:46,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:46,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451769416] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:46,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:46,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-11-17 11:16:46,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715878258] [2023-11-17 11:16:46,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:46,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 11:16:46,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:46,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 11:16:46,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2023-11-17 11:16:46,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:46,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 157 transitions, 2642 flow. Second operand has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 18 states have internal predecessors, (121), 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) [2023-11-17 11:16:46,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:46,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:46,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:46,929 INFO L124 PetriNetUnfolderBase]: 752/1367 cut-off events. [2023-11-17 11:16:46,930 INFO L125 PetriNetUnfolderBase]: For 92234/92234 co-relation queries the response was YES. [2023-11-17 11:16:46,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12700 conditions, 1367 events. 752/1367 cut-off events. For 92234/92234 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6840 event pairs, 12 based on Foata normal form. 40/1407 useless extension candidates. Maximal degree in co-relation 12626. Up to 458 conditions per place. [2023-11-17 11:16:46,944 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 62 selfloop transitions, 175 changer transitions 54/291 dead transitions. [2023-11-17 11:16:46,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 291 transitions, 6063 flow [2023-11-17 11:16:46,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-17 11:16:46,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-17 11:16:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 304 transitions. [2023-11-17 11:16:46,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2814814814814815 [2023-11-17 11:16:46,945 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 304 transitions. [2023-11-17 11:16:46,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 304 transitions. [2023-11-17 11:16:46,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:46,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 304 transitions. [2023-11-17 11:16:46,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 10.133333333333333) internal successors, (304), 30 states have internal predecessors, (304), 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) [2023-11-17 11:16:46,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 36.0) internal successors, (1116), 31 states have internal predecessors, (1116), 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) [2023-11-17 11:16:46,948 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 36.0) internal successors, (1116), 31 states have internal predecessors, (1116), 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) [2023-11-17 11:16:46,948 INFO L175 Difference]: Start difference. First operand has 154 places, 157 transitions, 2642 flow. Second operand 30 states and 304 transitions. [2023-11-17 11:16:46,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 291 transitions, 6063 flow [2023-11-17 11:16:47,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 291 transitions, 4619 flow, removed 696 selfloop flow, removed 11 redundant places. [2023-11-17 11:16:47,105 INFO L231 Difference]: Finished difference. Result has 187 places, 201 transitions, 3522 flow [2023-11-17 11:16:47,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3522, PETRI_PLACES=187, PETRI_TRANSITIONS=201} [2023-11-17 11:16:47,106 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 169 predicate places. [2023-11-17 11:16:47,106 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 201 transitions, 3522 flow [2023-11-17 11:16:47,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.722222222222222) internal successors, (121), 18 states have internal predecessors, (121), 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) [2023-11-17 11:16:47,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:47,106 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:47,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 11:16:47,311 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,SelfDestructingSolverStorable10 [2023-11-17 11:16:47,311 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:47,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:47,312 INFO L85 PathProgramCache]: Analyzing trace with hash -408764429, now seen corresponding path program 9 times [2023-11-17 11:16:47,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:47,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456000937] [2023-11-17 11:16:47,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:47,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:47,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:47,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456000937] [2023-11-17 11:16:47,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456000937] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:47,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463778908] [2023-11-17 11:16:47,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:16:47,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:47,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:47,508 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) [2023-11-17 11:16:47,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 11:16:47,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-17 11:16:47,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:47,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 11:16:47,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:47,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:47,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463778908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:47,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2023-11-17 11:16:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637276586] [2023-11-17 11:16:47,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:47,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-17 11:16:47,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:47,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-17 11:16:47,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2023-11-17 11:16:47,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:47,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 201 transitions, 3522 flow. Second operand has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 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) [2023-11-17 11:16:47,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:47,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:47,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:48,790 INFO L124 PetriNetUnfolderBase]: 936/1675 cut-off events. [2023-11-17 11:16:48,790 INFO L125 PetriNetUnfolderBase]: For 124107/124107 co-relation queries the response was YES. [2023-11-17 11:16:48,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16653 conditions, 1675 events. 936/1675 cut-off events. For 124107/124107 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7932 event pairs, 18 based on Foata normal form. 52/1727 useless extension candidates. Maximal degree in co-relation 16566. Up to 574 conditions per place. [2023-11-17 11:16:48,808 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 90 selfloop transitions, 221 changer transitions 98/409 dead transitions. [2023-11-17 11:16:48,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 409 transitions, 8941 flow [2023-11-17 11:16:48,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-17 11:16:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-11-17 11:16:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 518 transitions. [2023-11-17 11:16:48,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2767094017094017 [2023-11-17 11:16:48,810 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 518 transitions. [2023-11-17 11:16:48,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 518 transitions. [2023-11-17 11:16:48,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:48,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 518 transitions. [2023-11-17 11:16:48,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 9.961538461538462) internal successors, (518), 52 states have internal predecessors, (518), 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) [2023-11-17 11:16:48,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 36.0) internal successors, (1908), 53 states have internal predecessors, (1908), 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) [2023-11-17 11:16:48,814 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 36.0) internal successors, (1908), 53 states have internal predecessors, (1908), 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) [2023-11-17 11:16:48,814 INFO L175 Difference]: Start difference. First operand has 187 places, 201 transitions, 3522 flow. Second operand 52 states and 518 transitions. [2023-11-17 11:16:48,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 409 transitions, 8941 flow [2023-11-17 11:16:48,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 409 transitions, 8039 flow, removed 423 selfloop flow, removed 8 redundant places. [2023-11-17 11:16:48,972 INFO L231 Difference]: Finished difference. Result has 256 places, 247 transitions, 5174 flow [2023-11-17 11:16:48,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2944, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=5174, PETRI_PLACES=256, PETRI_TRANSITIONS=247} [2023-11-17 11:16:48,972 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 238 predicate places. [2023-11-17 11:16:48,972 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 247 transitions, 5174 flow [2023-11-17 11:16:48,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.366666666666666) internal successors, (191), 30 states have internal predecessors, (191), 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) [2023-11-17 11:16:48,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:48,973 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:48,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 11:16:49,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:49,181 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:49,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:49,181 INFO L85 PathProgramCache]: Analyzing trace with hash 196336404, now seen corresponding path program 10 times [2023-11-17 11:16:49,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:49,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657782718] [2023-11-17 11:16:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:49,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:49,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:49,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657782718] [2023-11-17 11:16:49,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657782718] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:49,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518549365] [2023-11-17 11:16:49,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:16:49,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:49,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:49,545 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) [2023-11-17 11:16:49,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 11:16:49,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:16:49,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:49,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 11:16:49,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:49,685 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:49,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:50,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518549365] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:50,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:50,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 44 [2023-11-17 11:16:50,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90206622] [2023-11-17 11:16:50,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:50,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-17 11:16:50,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:50,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-17 11:16:50,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=1579, Unknown=0, NotChecked=0, Total=2070 [2023-11-17 11:16:50,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:50,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 247 transitions, 5174 flow. Second operand has 46 states, 46 states have (on average 6.239130434782608) internal successors, (287), 46 states have internal predecessors, (287), 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) [2023-11-17 11:16:50,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:50,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:50,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:51,601 INFO L124 PetriNetUnfolderBase]: 1304/2411 cut-off events. [2023-11-17 11:16:51,601 INFO L125 PetriNetUnfolderBase]: For 344817/344817 co-relation queries the response was YES. [2023-11-17 11:16:51,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32381 conditions, 2411 events. 1304/2411 cut-off events. For 344817/344817 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 12162 event pairs, 234 based on Foata normal form. 80/2491 useless extension candidates. Maximal degree in co-relation 32268. Up to 993 conditions per place. [2023-11-17 11:16:51,640 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 215 selfloop transitions, 180 changer transitions 93/488 dead transitions. [2023-11-17 11:16:51,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 488 transitions, 14257 flow [2023-11-17 11:16:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-17 11:16:51,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-11-17 11:16:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 474 transitions. [2023-11-17 11:16:51,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2687074829931973 [2023-11-17 11:16:51,641 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 474 transitions. [2023-11-17 11:16:51,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 474 transitions. [2023-11-17 11:16:51,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:51,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 474 transitions. [2023-11-17 11:16:51,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 9.673469387755102) internal successors, (474), 49 states have internal predecessors, (474), 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) [2023-11-17 11:16:51,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 36.0) internal successors, (1800), 50 states have internal predecessors, (1800), 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) [2023-11-17 11:16:51,645 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 36.0) internal successors, (1800), 50 states have internal predecessors, (1800), 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) [2023-11-17 11:16:51,645 INFO L175 Difference]: Start difference. First operand has 256 places, 247 transitions, 5174 flow. Second operand 49 states and 474 transitions. [2023-11-17 11:16:51,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 488 transitions, 14257 flow [2023-11-17 11:16:52,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 488 transitions, 10960 flow, removed 1572 selfloop flow, removed 16 redundant places. [2023-11-17 11:16:52,375 INFO L231 Difference]: Finished difference. Result has 310 places, 341 transitions, 7130 flow [2023-11-17 11:16:52,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3763, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7130, PETRI_PLACES=310, PETRI_TRANSITIONS=341} [2023-11-17 11:16:52,376 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 292 predicate places. [2023-11-17 11:16:52,377 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 341 transitions, 7130 flow [2023-11-17 11:16:52,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.239130434782608) internal successors, (287), 46 states have internal predecessors, (287), 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) [2023-11-17 11:16:52,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:52,377 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:52,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 11:16:52,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:52,578 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:52,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:52,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1940693152, now seen corresponding path program 11 times [2023-11-17 11:16:52,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:52,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119944638] [2023-11-17 11:16:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:52,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:52,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119944638] [2023-11-17 11:16:52,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119944638] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:52,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265995329] [2023-11-17 11:16:52,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:16:52,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:52,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:52,917 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) [2023-11-17 11:16:52,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 11:16:52,986 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-11-17 11:16:52,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:52,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 11:16:52,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:53,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:53,531 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:53,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265995329] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:53,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:53,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-11-17 11:16:53,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050647210] [2023-11-17 11:16:53,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:53,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-17 11:16:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:53,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-17 11:16:53,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1965, Unknown=0, NotChecked=0, Total=2450 [2023-11-17 11:16:53,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:53,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 341 transitions, 7130 flow. Second operand has 50 states, 50 states have (on average 6.22) internal successors, (311), 50 states have internal predecessors, (311), 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) [2023-11-17 11:16:53,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:53,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:53,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:55,364 INFO L124 PetriNetUnfolderBase]: 1600/3003 cut-off events. [2023-11-17 11:16:55,365 INFO L125 PetriNetUnfolderBase]: For 766303/766303 co-relation queries the response was YES. [2023-11-17 11:16:55,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45689 conditions, 3003 events. 1600/3003 cut-off events. For 766303/766303 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 15603 event pairs, 78 based on Foata normal form. 80/3083 useless extension candidates. Maximal degree in co-relation 45553. Up to 1222 conditions per place. [2023-11-17 11:16:55,408 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 125 selfloop transitions, 349 changer transitions 109/583 dead transitions. [2023-11-17 11:16:55,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 583 transitions, 16654 flow [2023-11-17 11:16:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-17 11:16:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-11-17 11:16:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 553 transitions. [2023-11-17 11:16:55,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26949317738791423 [2023-11-17 11:16:55,410 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 553 transitions. [2023-11-17 11:16:55,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 553 transitions. [2023-11-17 11:16:55,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:55,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 553 transitions. [2023-11-17 11:16:55,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 9.701754385964913) internal successors, (553), 57 states have internal predecessors, (553), 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) [2023-11-17 11:16:55,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 36.0) internal successors, (2088), 58 states have internal predecessors, (2088), 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) [2023-11-17 11:16:55,413 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 36.0) internal successors, (2088), 58 states have internal predecessors, (2088), 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) [2023-11-17 11:16:55,413 INFO L175 Difference]: Start difference. First operand has 310 places, 341 transitions, 7130 flow. Second operand 57 states and 553 transitions. [2023-11-17 11:16:55,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 583 transitions, 16654 flow [2023-11-17 11:16:56,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 583 transitions, 14872 flow, removed 849 selfloop flow, removed 19 redundant places. [2023-11-17 11:16:56,884 INFO L231 Difference]: Finished difference. Result has 369 places, 417 transitions, 9558 flow [2023-11-17 11:16:56,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5628, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=9558, PETRI_PLACES=369, PETRI_TRANSITIONS=417} [2023-11-17 11:16:56,885 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 351 predicate places. [2023-11-17 11:16:56,885 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 417 transitions, 9558 flow [2023-11-17 11:16:56,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.22) internal successors, (311), 50 states have internal predecessors, (311), 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) [2023-11-17 11:16:56,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:56,885 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:56,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 11:16:57,090 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,SelfDestructingSolverStorable13 [2023-11-17 11:16:57,091 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:57,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:57,091 INFO L85 PathProgramCache]: Analyzing trace with hash 652164056, now seen corresponding path program 12 times [2023-11-17 11:16:57,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:57,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712931824] [2023-11-17 11:16:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:57,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:57,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:57,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712931824] [2023-11-17 11:16:57,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712931824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:57,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771178901] [2023-11-17 11:16:57,406 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 11:16:57,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:57,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:57,407 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:16:57,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 11:16:57,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-17 11:16:57,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:57,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-17 11:16:57,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:57,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:58,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771178901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:58,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:58,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-11-17 11:16:58,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160372127] [2023-11-17 11:16:58,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:58,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-17 11:16:58,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:58,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-17 11:16:58,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2013, Unknown=0, NotChecked=0, Total=2450 [2023-11-17 11:16:58,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:58,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 417 transitions, 9558 flow. Second operand has 50 states, 50 states have (on average 6.22) internal successors, (311), 50 states have internal predecessors, (311), 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) [2023-11-17 11:16:58,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:58,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:58,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:00,526 INFO L124 PetriNetUnfolderBase]: 1980/3695 cut-off events. [2023-11-17 11:17:00,526 INFO L125 PetriNetUnfolderBase]: For 1419802/1419802 co-relation queries the response was YES. [2023-11-17 11:17:00,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68224 conditions, 3695 events. 1980/3695 cut-off events. For 1419802/1419802 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19418 event pairs, 25 based on Foata normal form. 80/3775 useless extension candidates. Maximal degree in co-relation 68076. Up to 1526 conditions per place. [2023-11-17 11:17:00,579 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 130 selfloop transitions, 470 changer transitions 117/717 dead transitions. [2023-11-17 11:17:00,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 717 transitions, 24408 flow [2023-11-17 11:17:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-17 11:17:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-11-17 11:17:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 714 transitions. [2023-11-17 11:17:00,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.271689497716895 [2023-11-17 11:17:00,582 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 714 transitions. [2023-11-17 11:17:00,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 714 transitions. [2023-11-17 11:17:00,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:00,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 714 transitions. [2023-11-17 11:17:00,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 9.780821917808218) internal successors, (714), 73 states have internal predecessors, (714), 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) [2023-11-17 11:17:00,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 36.0) internal successors, (2664), 74 states have internal predecessors, (2664), 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) [2023-11-17 11:17:00,586 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 36.0) internal successors, (2664), 74 states have internal predecessors, (2664), 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) [2023-11-17 11:17:00,586 INFO L175 Difference]: Start difference. First operand has 369 places, 417 transitions, 9558 flow. Second operand 73 states and 714 transitions. [2023-11-17 11:17:00,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 717 transitions, 24408 flow [2023-11-17 11:17:02,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 717 transitions, 21423 flow, removed 1375 selfloop flow, removed 18 redundant places. [2023-11-17 11:17:02,759 INFO L231 Difference]: Finished difference. Result has 452 places, 502 transitions, 12940 flow [2023-11-17 11:17:02,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7329, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=12940, PETRI_PLACES=452, PETRI_TRANSITIONS=502} [2023-11-17 11:17:02,760 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 434 predicate places. [2023-11-17 11:17:02,760 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 502 transitions, 12940 flow [2023-11-17 11:17:02,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.22) internal successors, (311), 50 states have internal predecessors, (311), 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) [2023-11-17 11:17:02,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:02,761 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:02,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 11:17:02,964 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,SelfDestructingSolverStorable14 [2023-11-17 11:17:02,969 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:17:02,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:02,969 INFO L85 PathProgramCache]: Analyzing trace with hash -520058365, now seen corresponding path program 13 times [2023-11-17 11:17:02,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:02,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808466099] [2023-11-17 11:17:02,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:02,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:03,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:03,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808466099] [2023-11-17 11:17:03,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808466099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:17:03,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917540167] [2023-11-17 11:17:03,347 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 11:17:03,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:17:03,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:17:03,349 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) [2023-11-17 11:17:03,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 11:17:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:03,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-17 11:17:03,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:17:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:03,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:17:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:03,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917540167] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:17:03,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:17:03,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 48 [2023-11-17 11:17:03,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495640468] [2023-11-17 11:17:03,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:17:03,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-17 11:17:03,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:03,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-17 11:17:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=1875, Unknown=0, NotChecked=0, Total=2450 [2023-11-17 11:17:03,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:17:03,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 502 transitions, 12940 flow. Second operand has 50 states, 50 states have (on average 6.24) internal successors, (312), 50 states have internal predecessors, (312), 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) [2023-11-17 11:17:03,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:03,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:17:03,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:07,769 INFO L124 PetriNetUnfolderBase]: 2412/4487 cut-off events. [2023-11-17 11:17:07,769 INFO L125 PetriNetUnfolderBase]: For 2568659/2568659 co-relation queries the response was YES. [2023-11-17 11:17:07,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100891 conditions, 4487 events. 2412/4487 cut-off events. For 2568659/2568659 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 23934 event pairs, 22 based on Foata normal form. 76/4563 useless extension candidates. Maximal degree in co-relation 100713. Up to 1874 conditions per place. [2023-11-17 11:17:07,837 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 140 selfloop transitions, 590 changer transitions 176/906 dead transitions. [2023-11-17 11:17:07,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 906 transitions, 37932 flow [2023-11-17 11:17:07,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-11-17 11:17:07,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-11-17 11:17:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 893 transitions. [2023-11-17 11:17:07,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27258852258852256 [2023-11-17 11:17:07,845 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 893 transitions. [2023-11-17 11:17:07,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 893 transitions. [2023-11-17 11:17:07,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:07,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 893 transitions. [2023-11-17 11:17:07,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 9.813186813186814) internal successors, (893), 91 states have internal predecessors, (893), 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) [2023-11-17 11:17:07,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 36.0) internal successors, (3312), 92 states have internal predecessors, (3312), 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) [2023-11-17 11:17:07,857 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 36.0) internal successors, (3312), 92 states have internal predecessors, (3312), 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) [2023-11-17 11:17:07,857 INFO L175 Difference]: Start difference. First operand has 452 places, 502 transitions, 12940 flow. Second operand 91 states and 893 transitions. [2023-11-17 11:17:07,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 906 transitions, 37932 flow [2023-11-17 11:17:12,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 906 transitions, 30248 flow, removed 3650 selfloop flow, removed 24 redundant places. [2023-11-17 11:17:12,136 INFO L231 Difference]: Finished difference. Result has 552 places, 622 transitions, 17049 flow [2023-11-17 11:17:12,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9104, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=471, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=17049, PETRI_PLACES=552, PETRI_TRANSITIONS=622} [2023-11-17 11:17:12,137 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 534 predicate places. [2023-11-17 11:17:12,137 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 622 transitions, 17049 flow [2023-11-17 11:17:12,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.24) internal successors, (312), 50 states have internal predecessors, (312), 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) [2023-11-17 11:17:12,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:12,137 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:12,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 11:17:12,340 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,SelfDestructingSolverStorable15 [2023-11-17 11:17:12,340 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:17:12,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:12,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1507148443, now seen corresponding path program 14 times [2023-11-17 11:17:12,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:12,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328128641] [2023-11-17 11:17:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:12,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 380 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:12,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328128641] [2023-11-17 11:17:12,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328128641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:17:12,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085163337] [2023-11-17 11:17:12,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:17:12,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:17:12,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:17:12,648 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:17:12,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 11:17:12,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:17:12,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:17:12,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-17 11:17:12,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:17:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:12,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:17:12,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085163337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:17:12,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:17:12,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2023-11-17 11:17:12,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489462615] [2023-11-17 11:17:12,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:17:12,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 11:17:12,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 11:17:12,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2023-11-17 11:17:12,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2023-11-17 11:17:12,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 622 transitions, 17049 flow. Second operand has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 23 states have internal predecessors, (279), 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) [2023-11-17 11:17:12,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:12,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2023-11-17 11:17:12,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:28,576 INFO L124 PetriNetUnfolderBase]: 25003/37975 cut-off events. [2023-11-17 11:17:28,577 INFO L125 PetriNetUnfolderBase]: For 29688423/29688423 co-relation queries the response was YES. [2023-11-17 11:17:29,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 886243 conditions, 37975 events. 25003/37975 cut-off events. For 29688423/29688423 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 236933 event pairs, 323 based on Foata normal form. 1002/38977 useless extension candidates. Maximal degree in co-relation 886031. Up to 15004 conditions per place. [2023-11-17 11:17:30,075 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 0 selfloop transitions, 0 changer transitions 7502/7502 dead transitions. [2023-11-17 11:17:30,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 7502 transitions, 183450 flow [2023-11-17 11:17:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 11:17:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 11:17:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 407 transitions. [2023-11-17 11:17:30,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4915458937198068 [2023-11-17 11:17:30,076 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 407 transitions. [2023-11-17 11:17:30,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 407 transitions. [2023-11-17 11:17:30,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:30,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 407 transitions. [2023-11-17 11:17:30,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 17.695652173913043) internal successors, (407), 23 states have internal predecessors, (407), 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) [2023-11-17 11:17:30,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 36.0) internal successors, (864), 24 states have internal predecessors, (864), 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) [2023-11-17 11:17:30,078 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 36.0) internal successors, (864), 24 states have internal predecessors, (864), 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) [2023-11-17 11:17:30,078 INFO L175 Difference]: Start difference. First operand has 552 places, 622 transitions, 17049 flow. Second operand 23 states and 407 transitions. [2023-11-17 11:17:30,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 7502 transitions, 183450 flow [2023-11-17 11:19:06,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 7502 transitions, 150336 flow, removed 9799 selfloop flow, removed 60 redundant places. [2023-11-17 11:19:06,461 INFO L231 Difference]: Finished difference. Result has 512 places, 0 transitions, 0 flow [2023-11-17 11:19:06,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11064, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=512, PETRI_TRANSITIONS=0} [2023-11-17 11:19:06,462 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 494 predicate places. [2023-11-17 11:19:06,462 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 0 transitions, 0 flow [2023-11-17 11:19:06,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 23 states have internal predecessors, (279), 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) [2023-11-17 11:19:06,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 11:19:06,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 11:19:06,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 11:19:06,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 11:19:06,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 11:19:06,670 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1] [2023-11-17 11:19:06,672 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:19:06,672 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:19:06,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:19:06 BasicIcfg [2023-11-17 11:19:06,674 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:19:06,675 INFO L158 Benchmark]: Toolchain (without parser) took 146350.32ms. Allocated memory was 184.5MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 145.2MB in the beginning and 3.4GB in the end (delta: -3.3GB). Peak memory consumption was 4.9GB. Max. memory is 8.0GB. [2023-11-17 11:19:06,675 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:19:06,675 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.45ms. Allocated memory is still 184.5MB. Free memory was 144.8MB in the beginning and 125.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 11:19:06,675 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.56ms. Allocated memory is still 184.5MB. Free memory was 125.3MB in the beginning and 123.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:19:06,675 INFO L158 Benchmark]: Boogie Preprocessor took 25.95ms. Allocated memory is still 184.5MB. Free memory was 123.5MB in the beginning and 122.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:19:06,675 INFO L158 Benchmark]: RCFGBuilder took 324.31ms. Allocated memory is still 184.5MB. Free memory was 122.1MB in the beginning and 102.2MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:19:06,676 INFO L158 Benchmark]: TraceAbstraction took 145581.85ms. Allocated memory was 184.5MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 101.5MB in the beginning and 3.4GB in the end (delta: -3.3GB). Peak memory consumption was 4.9GB. Max. memory is 8.0GB. [2023-11-17 11:19:06,681 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 382.45ms. Allocated memory is still 184.5MB. Free memory was 144.8MB in the beginning and 125.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.56ms. Allocated memory is still 184.5MB. Free memory was 125.3MB in the beginning and 123.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.95ms. Allocated memory is still 184.5MB. Free memory was 123.5MB in the beginning and 122.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 324.31ms. Allocated memory is still 184.5MB. Free memory was 122.1MB in the beginning and 102.2MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 145581.85ms. Allocated memory was 184.5MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 101.5MB in the beginning and 3.4GB in the end (delta: -3.3GB). Peak memory consumption was 4.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 26 PlacesBefore, 18 PlacesAfterwards, 22 TransitionsBefore, 13 TransitionsAfterwards, 230 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 12 TotalNumberOfCompositions, 219 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 184, independent: 173, independent conditional: 0, independent unconditional: 173, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 145, independent: 137, independent conditional: 0, independent unconditional: 137, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 145, independent: 137, independent conditional: 0, independent unconditional: 137, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 18, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 184, independent: 36, independent conditional: 0, independent unconditional: 36, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 145, unknown conditional: 0, unknown unconditional: 145] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 locations, 3 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: 145.5s, OverallIterations: 17, TraceHistogramMax: 21, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 135.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5602 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5602 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 481 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3976 IncrementalHoareTripleChecker+Invalid, 4457 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 481 mSolverCounterUnsat, 0 mSDtfsCounter, 3976 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1050 GetRequests, 308 SyntacticMatches, 11 SemanticMatches, 731 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18455 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17049occurred in iteration=16, InterpolantAutomatonStates: 493, 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, 5.7s InterpolantComputationTime, 576 NumberOfCodeBlocks, 576 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 751 ConstructedInterpolants, 0 QuantifiedInterpolants, 3200 SizeOfPredicates, 129 NumberOfNonLiveVariables, 2036 ConjunctsInSsa, 211 ConjunctsInUnsatCore, 38 InterpolantComputations, 7 PerfectInterpolantSequences, 792/2480 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:19:06,699 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...