/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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:15:39,457 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:15:39,512 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 11:15:39,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:15:39,534 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:15:39,534 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:15:39,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:15:39,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:15:39,535 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:15:39,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:15:39,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:15:39,536 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:15:39,537 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:15:39,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:15:39,537 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:15:39,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:15:39,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:15:39,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:15:39,538 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:15:39,539 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:15:39,539 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:15:39,543 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:15:39,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:15:39,543 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:15:39,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:15:39,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:15:39,544 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:15:39,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:15:39,545 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:15:39,545 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:15:39,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:15:39,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:15:39,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:15:39,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:15:39,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:15:39,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:15:39,806 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:15:39,807 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:15:39,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2023-11-17 11:15:41,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:15:41,251 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:15:41,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2023-11-17 11:15:41,274 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a147262/3ad1daac18dd4619bab96b47576574ca/FLAG97b141f5c [2023-11-17 11:15:41,294 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36a147262/3ad1daac18dd4619bab96b47576574ca [2023-11-17 11:15:41,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:15:41,300 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:15:41,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:15:41,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:15:41,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:15:41,309 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,310 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124a4cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41, skipping insertion in model container [2023-11-17 11:15:41,310 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,362 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:15:41,621 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-1.i[30950,30963] [2023-11-17 11:15:41,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:15:41,634 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:15:41,684 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-1.i[30950,30963] [2023-11-17 11:15:41,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:15:41,719 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:15:41,720 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:15:41,726 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:15:41,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41 WrapperNode [2023-11-17 11:15:41,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:15:41,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:15:41,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:15:41,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:15:41,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,782 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-11-17 11:15:41,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:15:41,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:15:41,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:15:41,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:15:41,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,795 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:15:41,823 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:15:41,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:15:41,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:15:41,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (1/1) ... [2023-11-17 11:15:41,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:15:41,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:15:41,854 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 11:15:41,879 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 11:15:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 11:15:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 11:15:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 11:15:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 11:15:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:15:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:15:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:15:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:15:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:15:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:15:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:15:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:15:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:15:41,890 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 11:15:42,016 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:15:42,018 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:15:42,113 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:15:42,214 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:15:42,214 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 11:15:42,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:15:42 BoogieIcfgContainer [2023-11-17 11:15:42,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:15:42,218 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:15:42,218 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:15:42,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:15:42,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:15:41" (1/3) ... [2023-11-17 11:15:42,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eec6e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:15:42, skipping insertion in model container [2023-11-17 11:15:42,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:15:41" (2/3) ... [2023-11-17 11:15:42,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eec6e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:15:42, skipping insertion in model container [2023-11-17 11:15:42,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:15:42" (3/3) ... [2023-11-17 11:15:42,223 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-11-17 11:15:42,240 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:15:42,241 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:15:42,241 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:15:42,289 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:15:42,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2023-11-17 11:15:42,344 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2023-11-17 11:15:42,345 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:15:42,348 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 11:15:42,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2023-11-17 11:15:42,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2023-11-17 11:15:42,354 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:15:42,369 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 22 transitions, 50 flow [2023-11-17 11:15:42,371 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 22 transitions, 50 flow [2023-11-17 11:15:42,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 50 flow [2023-11-17 11:15:42,378 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2023-11-17 11:15:42,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:15:42,379 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 11:15:42,380 INFO L119 LiptonReduction]: Number of co-enabled transitions 230 [2023-11-17 11:15:42,686 INFO L134 LiptonReduction]: Checked pairs total: 219 [2023-11-17 11:15:42,686 INFO L136 LiptonReduction]: Total number of compositions: 12 [2023-11-17 11:15:42,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:15:42,712 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;@2c4db245, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:15:42,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:15:42,717 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:15:42,717 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-11-17 11:15:42,717 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:15:42,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:42,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:15:42,718 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 11:15:42,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:42,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1048666412, now seen corresponding path program 1 times [2023-11-17 11:15:42,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:42,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239975148] [2023-11-17 11:15:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:42,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:43,117 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 11:15:43,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:43,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239975148] [2023-11-17 11:15:43,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239975148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:15:43,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:15:43,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:15:43,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639257543] [2023-11-17 11:15:43,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:15:43,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:15:43,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:43,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:15:43,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:15:43,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:43,165 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 11:15:43,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:43,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:43,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:43,277 INFO L124 PetriNetUnfolderBase]: 94/152 cut-off events. [2023-11-17 11:15:43,277 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:15:43,279 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 11:15:43,282 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-11-17 11:15:43,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-11-17 11:15:43,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:15:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:15:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2023-11-17 11:15:43,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2023-11-17 11:15:43,296 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 47 transitions. [2023-11-17 11:15:43,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 47 transitions. [2023-11-17 11:15:43,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:43,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 47 transitions. [2023-11-17 11:15:43,301 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 11:15:43,306 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 11:15:43,306 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 11:15:43,308 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 32 flow. Second operand 4 states and 47 transitions. [2023-11-17 11:15:43,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-11-17 11:15:43,311 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 11:15:43,316 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-11-17 11:15:43,318 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 11:15:43,322 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-11-17 11:15:43,323 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-11-17 11:15:43,323 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 11:15:43,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:43,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:43,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:15:43,324 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 11:15:43,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:43,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1549308775, now seen corresponding path program 1 times [2023-11-17 11:15:43,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:43,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684110051] [2023-11-17 11:15:43,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:43,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:43,483 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 11:15:43,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:43,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684110051] [2023-11-17 11:15:43,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684110051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:15:43,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:15:43,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:15:43,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965781948] [2023-11-17 11:15:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:15:43,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:15:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:15:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:15:43,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:43,491 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 11:15:43,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:43,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:43,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:43,604 INFO L124 PetriNetUnfolderBase]: 126/217 cut-off events. [2023-11-17 11:15:43,604 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-17 11:15:43,605 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 11:15:43,606 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-11-17 11:15:43,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-11-17 11:15:43,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:15:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:15:43,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2023-11-17 11:15:43,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2023-11-17 11:15:43,609 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 68 transitions. [2023-11-17 11:15:43,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 68 transitions. [2023-11-17 11:15:43,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:43,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 68 transitions. [2023-11-17 11:15:43,610 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 11:15:43,611 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 11:15:43,612 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 11:15:43,612 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 68 transitions. [2023-11-17 11:15:43,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-11-17 11:15:43,613 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 11:15:43,614 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-11-17 11:15:43,614 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 11:15:43,615 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-11-17 11:15:43,615 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-11-17 11:15:43,616 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 11:15:43,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:43,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:43,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:15:43,616 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 11:15:43,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:43,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1549307845, now seen corresponding path program 2 times [2023-11-17 11:15:43,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:43,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23255244] [2023-11-17 11:15:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:43,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:43,739 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 11:15:43,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:43,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23255244] [2023-11-17 11:15:43,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23255244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:15:43,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:15:43,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:15:43,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173220385] [2023-11-17 11:15:43,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:15:43,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:15:43,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:43,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:15:43,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:15:43,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:43,749 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 11:15:43,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:43,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:43,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:43,861 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-11-17 11:15:43,861 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2023-11-17 11:15:43,865 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 11:15:43,867 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-11-17 11:15:43,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2023-11-17 11:15:43,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:15:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:15:43,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2023-11-17 11:15:43,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2023-11-17 11:15:43,870 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 58 transitions. [2023-11-17 11:15:43,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 58 transitions. [2023-11-17 11:15:43,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:43,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 58 transitions. [2023-11-17 11:15:43,873 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 11:15:43,874 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 11:15:43,874 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 11:15:43,874 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 58 transitions. [2023-11-17 11:15:43,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2023-11-17 11:15:43,877 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 11:15:43,878 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2023-11-17 11:15:43,878 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 11:15:43,879 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-11-17 11:15:43,879 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2023-11-17 11:15:43,879 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 11:15:43,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:43,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:43,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:15:43,880 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 11:15:43,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1282021618, now seen corresponding path program 1 times [2023-11-17 11:15:43,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:43,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219466189] [2023-11-17 11:15:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:43,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:43,994 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 11:15:43,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:43,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219466189] [2023-11-17 11:15:43,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219466189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:15:43,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:15:43,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:15:43,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849215159] [2023-11-17 11:15:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:15:43,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:15:43,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:44,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:15:44,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:15:44,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:44,002 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 11:15:44,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:44,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:44,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:44,151 INFO L124 PetriNetUnfolderBase]: 126/219 cut-off events. [2023-11-17 11:15:44,151 INFO L125 PetriNetUnfolderBase]: For 529/529 co-relation queries the response was YES. [2023-11-17 11:15:44,152 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 11:15:44,154 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 32 selfloop transitions, 16 changer transitions 11/59 dead transitions. [2023-11-17 11:15:44,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 425 flow [2023-11-17 11:15:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 11:15:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 11:15:44,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2023-11-17 11:15:44,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2993827160493827 [2023-11-17 11:15:44,157 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 97 transitions. [2023-11-17 11:15:44,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 97 transitions. [2023-11-17 11:15:44,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:44,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 97 transitions. [2023-11-17 11:15:44,158 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 11:15:44,159 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 11:15:44,159 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 11:15:44,159 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 9 states and 97 transitions. [2023-11-17 11:15:44,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 425 flow [2023-11-17 11:15:44,162 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 11:15:44,164 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 251 flow [2023-11-17 11:15:44,164 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 11:15:44,164 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 24 predicate places. [2023-11-17 11:15:44,165 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 251 flow [2023-11-17 11:15:44,165 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 11:15:44,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:44,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:44,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:15:44,165 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 11:15:44,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:44,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1281993718, now seen corresponding path program 2 times [2023-11-17 11:15:44,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:44,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607109016] [2023-11-17 11:15:44,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:44,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:44,292 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 11:15:44,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:44,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607109016] [2023-11-17 11:15:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607109016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:15:44,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:15:44,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:15:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216417072] [2023-11-17 11:15:44,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:15:44,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:15:44,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:44,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:15:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:15:44,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:44,296 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 11:15:44,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:44,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:44,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:44,394 INFO L124 PetriNetUnfolderBase]: 162/283 cut-off events. [2023-11-17 11:15:44,394 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2023-11-17 11:15:44,395 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 11:15:44,397 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 38 selfloop transitions, 20 changer transitions 3/61 dead transitions. [2023-11-17 11:15:44,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 497 flow [2023-11-17 11:15:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:15:44,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:15:44,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2023-11-17 11:15:44,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2986111111111111 [2023-11-17 11:15:44,401 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 86 transitions. [2023-11-17 11:15:44,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 86 transitions. [2023-11-17 11:15:44,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:44,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 86 transitions. [2023-11-17 11:15:44,402 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 11:15:44,402 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 11:15:44,403 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 11:15:44,403 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 251 flow. Second operand 8 states and 86 transitions. [2023-11-17 11:15:44,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 497 flow [2023-11-17 11:15:44,406 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 11:15:44,407 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 344 flow [2023-11-17 11:15:44,408 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 11:15:44,408 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 33 predicate places. [2023-11-17 11:15:44,408 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 344 flow [2023-11-17 11:15:44,409 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 11:15:44,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:44,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:44,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:15:44,409 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 11:15:44,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1046048068, now seen corresponding path program 3 times [2023-11-17 11:15:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:44,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530736539] [2023-11-17 11:15:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:44,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:44,491 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 11:15:44,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530736539] [2023-11-17 11:15:44,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530736539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:15:44,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:15:44,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:15:44,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224751298] [2023-11-17 11:15:44,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:15:44,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:15:44,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:44,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:15:44,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:15:44,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:44,494 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 11:15:44,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:44,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:44,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:44,591 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-11-17 11:15:44,592 INFO L125 PetriNetUnfolderBase]: For 1221/1221 co-relation queries the response was YES. [2023-11-17 11:15:44,593 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 11:15:44,594 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 30 selfloop transitions, 20 changer transitions 8/58 dead transitions. [2023-11-17 11:15:44,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 566 flow [2023-11-17 11:15:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:15:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:15:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2023-11-17 11:15:44,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2023-11-17 11:15:44,595 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 75 transitions. [2023-11-17 11:15:44,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 75 transitions. [2023-11-17 11:15:44,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:44,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 75 transitions. [2023-11-17 11:15:44,596 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 11:15:44,597 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 11:15:44,597 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 11:15:44,597 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 344 flow. Second operand 7 states and 75 transitions. [2023-11-17 11:15:44,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 566 flow [2023-11-17 11:15:44,603 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 11:15:44,604 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 388 flow [2023-11-17 11:15:44,604 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 11:15:44,605 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 38 predicate places. [2023-11-17 11:15:44,605 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 388 flow [2023-11-17 11:15:44,605 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 11:15:44,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:44,605 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:44,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:15:44,606 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 11:15:44,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:44,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1932250210, now seen corresponding path program 4 times [2023-11-17 11:15:44,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:44,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352578306] [2023-11-17 11:15:44,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:44,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:44,704 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 11:15:44,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:44,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352578306] [2023-11-17 11:15:44,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352578306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:15:44,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809081219] [2023-11-17 11:15:44,705 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:15:44,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:15:44,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:15:44,713 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 11:15:44,743 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 11:15:44,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:15:44,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:15:44,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 11:15:44,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:15:44,902 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 11:15:44,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:15:45,000 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 11:15:45,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809081219] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:15:45,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:15:45,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 11:15:45,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587899786] [2023-11-17 11:15:45,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:15:45,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 11:15:45,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:45,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 11:15:45,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-17 11:15:45,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:45,005 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 11:15:45,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:45,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:45,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:45,264 INFO L124 PetriNetUnfolderBase]: 198/343 cut-off events. [2023-11-17 11:15:45,265 INFO L125 PetriNetUnfolderBase]: For 2134/2134 co-relation queries the response was YES. [2023-11-17 11:15:45,266 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 11:15:45,268 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 34 selfloop transitions, 35 changer transitions 22/91 dead transitions. [2023-11-17 11:15:45,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 946 flow [2023-11-17 11:15:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 11:15:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 11:15:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 144 transitions. [2023-11-17 11:15:45,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2023-11-17 11:15:45,270 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 144 transitions. [2023-11-17 11:15:45,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 144 transitions. [2023-11-17 11:15:45,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:45,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 144 transitions. [2023-11-17 11:15:45,273 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 11:15:45,276 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 11:15:45,277 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 11:15:45,277 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 388 flow. Second operand 14 states and 144 transitions. [2023-11-17 11:15:45,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 946 flow [2023-11-17 11:15:45,285 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 11:15:45,287 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 689 flow [2023-11-17 11:15:45,288 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 11:15:45,289 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 51 predicate places. [2023-11-17 11:15:45,289 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 689 flow [2023-11-17 11:15:45,290 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 11:15:45,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:45,290 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:45,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 11:15:45,495 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 11:15:45,495 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 11:15:45,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:45,496 INFO L85 PathProgramCache]: Analyzing trace with hash -3296339, now seen corresponding path program 5 times [2023-11-17 11:15:45,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:45,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342669527] [2023-11-17 11:15:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:45,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:45,647 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 11:15:45,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:45,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342669527] [2023-11-17 11:15:45,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342669527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:15:45,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598440659] [2023-11-17 11:15:45,648 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:15:45,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:15:45,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:15:45,650 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 11:15:45,656 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 11:15:45,728 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 11:15:45,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:15:45,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:15:45,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:15:45,776 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 11:15:45,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:15:45,911 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 11:15:45,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598440659] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:15:45,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:15:45,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 11:15:45,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99023961] [2023-11-17 11:15:45,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:15:45,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 11:15:45,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:45,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 11:15:45,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-17 11:15:45,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:45,914 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 11:15:45,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:45,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:45,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:46,186 INFO L124 PetriNetUnfolderBase]: 254/455 cut-off events. [2023-11-17 11:15:46,186 INFO L125 PetriNetUnfolderBase]: For 4616/4616 co-relation queries the response was YES. [2023-11-17 11:15:46,188 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 11:15:46,190 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 65 selfloop transitions, 25 changer transitions 27/117 dead transitions. [2023-11-17 11:15:46,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 1455 flow [2023-11-17 11:15:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 11:15:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 11:15:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 163 transitions. [2023-11-17 11:15:46,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2829861111111111 [2023-11-17 11:15:46,192 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 163 transitions. [2023-11-17 11:15:46,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 163 transitions. [2023-11-17 11:15:46,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:46,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 163 transitions. [2023-11-17 11:15:46,193 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 11:15:46,194 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 11:15:46,194 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 11:15:46,195 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 689 flow. Second operand 16 states and 163 transitions. [2023-11-17 11:15:46,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 1455 flow [2023-11-17 11:15:46,206 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 11:15:46,209 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 762 flow [2023-11-17 11:15:46,209 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 11:15:46,210 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 71 predicate places. [2023-11-17 11:15:46,210 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 762 flow [2023-11-17 11:15:46,210 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 11:15:46,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:46,210 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:46,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 11:15:46,416 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 11:15:46,417 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 11:15:46,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:46,417 INFO L85 PathProgramCache]: Analyzing trace with hash 852010315, now seen corresponding path program 6 times [2023-11-17 11:15:46,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:46,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265822371] [2023-11-17 11:15:46,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:46,577 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 11:15:46,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:46,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265822371] [2023-11-17 11:15:46,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265822371] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:15:46,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865401848] [2023-11-17 11:15:46,578 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 11:15:46,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:15:46,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:15:46,580 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 11:15:46,590 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 11:15:46,653 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 11:15:46,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:15:46,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:15:46,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:15:46,714 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 11:15:46,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:15:46,868 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 11:15:46,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865401848] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:15:46,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:15:46,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 11:15:46,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874846334] [2023-11-17 11:15:46,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:15:46,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 11:15:46,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:46,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 11:15:46,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-17 11:15:46,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:46,872 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 11:15:46,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:46,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:46,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:47,304 INFO L124 PetriNetUnfolderBase]: 408/747 cut-off events. [2023-11-17 11:15:47,304 INFO L125 PetriNetUnfolderBase]: For 12707/12707 co-relation queries the response was YES. [2023-11-17 11:15:47,309 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 11:15:47,313 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 73 selfloop transitions, 71 changer transitions 37/181 dead transitions. [2023-11-17 11:15:47,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 181 transitions, 2078 flow [2023-11-17 11:15:47,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 11:15:47,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 11:15:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 224 transitions. [2023-11-17 11:15:47,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2828282828282828 [2023-11-17 11:15:47,317 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 224 transitions. [2023-11-17 11:15:47,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 224 transitions. [2023-11-17 11:15:47,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:47,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 224 transitions. [2023-11-17 11:15:47,318 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 11:15:47,320 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 11:15:47,320 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 11:15:47,320 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 762 flow. Second operand 22 states and 224 transitions. [2023-11-17 11:15:47,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 181 transitions, 2078 flow [2023-11-17 11:15:47,345 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 11:15:47,349 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 1489 flow [2023-11-17 11:15:47,349 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 11:15:47,351 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 102 predicate places. [2023-11-17 11:15:47,351 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 1489 flow [2023-11-17 11:15:47,351 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 11:15:47,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:47,351 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:47,359 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 11:15:47,559 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 11:15:47,560 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 11:15:47,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1696550901, now seen corresponding path program 7 times [2023-11-17 11:15:47,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:47,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311078071] [2023-11-17 11:15:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:47,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:47,684 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 11:15:47,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:47,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311078071] [2023-11-17 11:15:47,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311078071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:15:47,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737540080] [2023-11-17 11:15:47,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 11:15:47,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:15:47,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:15:47,686 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 11:15:47,705 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 11:15:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:47,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:15:47,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:15:47,787 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 11:15:47,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:15:47,890 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 11:15:47,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737540080] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:15:47,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:15:47,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 11:15:47,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865680481] [2023-11-17 11:15:47,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:15:47,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 11:15:47,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:47,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 11:15:47,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-17 11:15:47,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:47,893 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 11:15:47,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:47,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:47,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:48,429 INFO L124 PetriNetUnfolderBase]: 608/1103 cut-off events. [2023-11-17 11:15:48,429 INFO L125 PetriNetUnfolderBase]: For 39442/39442 co-relation queries the response was YES. [2023-11-17 11:15:48,434 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 11:15:48,439 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 71 selfloop transitions, 133 changer transitions 41/245 dead transitions. [2023-11-17 11:15:48,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 245 transitions, 3799 flow [2023-11-17 11:15:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 11:15:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 11:15:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 275 transitions. [2023-11-17 11:15:48,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2829218106995885 [2023-11-17 11:15:48,442 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 275 transitions. [2023-11-17 11:15:48,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 275 transitions. [2023-11-17 11:15:48,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:48,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 275 transitions. [2023-11-17 11:15:48,444 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 11:15:48,445 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 11:15:48,446 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 11:15:48,446 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 1489 flow. Second operand 27 states and 275 transitions. [2023-11-17 11:15:48,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 245 transitions, 3799 flow [2023-11-17 11:15:48,513 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 11:15:48,520 INFO L231 Difference]: Finished difference. Result has 154 places, 157 transitions, 2642 flow [2023-11-17 11:15:48,520 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 11:15:48,521 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 136 predicate places. [2023-11-17 11:15:48,521 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 157 transitions, 2642 flow [2023-11-17 11:15:48,521 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 11:15:48,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:48,522 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:48,529 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 11:15:48,727 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 11:15:48,728 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 11:15:48,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:48,728 INFO L85 PathProgramCache]: Analyzing trace with hash 577871889, now seen corresponding path program 8 times [2023-11-17 11:15:48,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:48,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123416656] [2023-11-17 11:15:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:48,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:48,842 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 11:15:48,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:48,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123416656] [2023-11-17 11:15:48,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123416656] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:15:48,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415020104] [2023-11-17 11:15:48,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:15:48,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:15:48,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:15:48,844 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 11:15:48,867 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 11:15:48,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:15:48,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:15:48,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 11:15:48,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:15:48,963 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 11:15:48,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:15:49,062 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 11:15:49,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415020104] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:15:49,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:15:49,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-17 11:15:49,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475732406] [2023-11-17 11:15:49,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:15:49,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 11:15:49,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:49,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 11:15:49,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-11-17 11:15:49,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:49,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 157 transitions, 2642 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 11:15:49,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:49,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:49,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:49,678 INFO L124 PetriNetUnfolderBase]: 712/1295 cut-off events. [2023-11-17 11:15:49,678 INFO L125 PetriNetUnfolderBase]: For 81431/81431 co-relation queries the response was YES. [2023-11-17 11:15:49,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11822 conditions, 1295 events. 712/1295 cut-off events. For 81431/81431 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6420 event pairs, 29 based on Foata normal form. 28/1323 useless extension candidates. Maximal degree in co-relation 11748. Up to 426 conditions per place. [2023-11-17 11:15:49,692 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 61 selfloop transitions, 157 changer transitions 40/258 dead transitions. [2023-11-17 11:15:49,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 258 transitions, 5377 flow [2023-11-17 11:15:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 11:15:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 11:15:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 231 transitions. [2023-11-17 11:15:49,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27898550724637683 [2023-11-17 11:15:49,694 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 231 transitions. [2023-11-17 11:15:49,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 231 transitions. [2023-11-17 11:15:49,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:49,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 231 transitions. [2023-11-17 11:15:49,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 10.043478260869565) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 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 11:15:49,697 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 11:15:49,697 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 11:15:49,697 INFO L175 Difference]: Start difference. First operand has 154 places, 157 transitions, 2642 flow. Second operand 23 states and 231 transitions. [2023-11-17 11:15:49,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 258 transitions, 5377 flow [2023-11-17 11:15:49,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 258 transitions, 4041 flow, removed 642 selfloop flow, removed 11 redundant places. [2023-11-17 11:15:49,875 INFO L231 Difference]: Finished difference. Result has 175 places, 191 transitions, 3182 flow [2023-11-17 11:15:49,875 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=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3182, PETRI_PLACES=175, PETRI_TRANSITIONS=191} [2023-11-17 11:15:49,876 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 157 predicate places. [2023-11-17 11:15:49,876 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 191 transitions, 3182 flow [2023-11-17 11:15:49,876 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 11:15:49,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:49,876 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:49,887 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 11:15:50,081 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 11:15:50,082 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 11:15:50,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1912421650, now seen corresponding path program 9 times [2023-11-17 11:15:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243457493] [2023-11-17 11:15:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:50,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:50,248 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:50,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:50,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243457493] [2023-11-17 11:15:50,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243457493] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:15:50,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76583788] [2023-11-17 11:15:50,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:15:50,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:15:50,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:15:50,250 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 11:15:50,270 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 11:15:50,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-17 11:15:50,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:15:50,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 11:15:50,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:15:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:50,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:15:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:50,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76583788] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:15:50,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:15:50,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-17 11:15:50,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121297644] [2023-11-17 11:15:50,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:15:50,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 11:15:50,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:50,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 11:15:50,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-11-17 11:15:50,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:15:50,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 191 transitions, 3182 flow. Second operand has 26 states, 26 states have (on average 6.423076923076923) internal successors, (167), 26 states have internal predecessors, (167), 0 states have call successors, (0), 0 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 11:15:50,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:50,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:15:50,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:51,307 INFO L124 PetriNetUnfolderBase]: 752/1363 cut-off events. [2023-11-17 11:15:51,307 INFO L125 PetriNetUnfolderBase]: For 70782/70782 co-relation queries the response was YES. [2023-11-17 11:15:51,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11962 conditions, 1363 events. 752/1363 cut-off events. For 70782/70782 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6797 event pairs, 28 based on Foata normal form. 12/1375 useless extension candidates. Maximal degree in co-relation 11880. Up to 446 conditions per place. [2023-11-17 11:15:51,324 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 70 selfloop transitions, 171 changer transitions 50/291 dead transitions. [2023-11-17 11:15:51,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 291 transitions, 5370 flow [2023-11-17 11:15:51,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-17 11:15:51,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-17 11:15:51,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 280 transitions. [2023-11-17 11:15:51,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2023-11-17 11:15:51,326 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 280 transitions. [2023-11-17 11:15:51,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 280 transitions. [2023-11-17 11:15:51,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:51,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 280 transitions. [2023-11-17 11:15:51,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 10.0) internal successors, (280), 28 states have internal predecessors, (280), 0 states have call successors, (0), 0 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 11:15:51,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 36.0) internal successors, (1044), 29 states have internal predecessors, (1044), 0 states have call successors, (0), 0 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 11:15:51,331 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 36.0) internal successors, (1044), 29 states have internal predecessors, (1044), 0 states have call successors, (0), 0 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 11:15:51,331 INFO L175 Difference]: Start difference. First operand has 175 places, 191 transitions, 3182 flow. Second operand 28 states and 280 transitions. [2023-11-17 11:15:51,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 291 transitions, 5370 flow [2023-11-17 11:15:51,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 291 transitions, 4903 flow, removed 209 selfloop flow, removed 6 redundant places. [2023-11-17 11:15:51,533 INFO L231 Difference]: Finished difference. Result has 202 places, 201 transitions, 3566 flow [2023-11-17 11:15:51,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3566, PETRI_PLACES=202, PETRI_TRANSITIONS=201} [2023-11-17 11:15:51,534 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 184 predicate places. [2023-11-17 11:15:51,534 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 201 transitions, 3566 flow [2023-11-17 11:15:51,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.423076923076923) internal successors, (167), 26 states have internal predecessors, (167), 0 states have call successors, (0), 0 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 11:15:51,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:15:51,535 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:15:51,540 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 11:15:51,740 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 11:15:51,740 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 11:15:51,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:15:51,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1262921866, now seen corresponding path program 10 times [2023-11-17 11:15:51,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:15:51,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314105821] [2023-11-17 11:15:51,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:15:51,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:15:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:15:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:51,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:15:51,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314105821] [2023-11-17 11:15:51,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314105821] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:15:51,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16204623] [2023-11-17 11:15:51,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:15:51,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:15:51,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:15:51,839 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 11:15:51,847 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 11:15:51,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:15:51,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:15:51,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 11:15:51,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:15:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:15:51,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:15:51,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16204623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:15:51,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:15:51,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-11-17 11:15:51,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171371815] [2023-11-17 11:15:51,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:15:51,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:15:51,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:15:51,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:15:51,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-17 11:15:51,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2023-11-17 11:15:51,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 201 transitions, 3566 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 11:15:51,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:15:51,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2023-11-17 11:15:51,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:15:52,557 INFO L124 PetriNetUnfolderBase]: 1720/2874 cut-off events. [2023-11-17 11:15:52,558 INFO L125 PetriNetUnfolderBase]: For 146611/146611 co-relation queries the response was YES. [2023-11-17 11:15:52,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22256 conditions, 2874 events. 1720/2874 cut-off events. For 146611/146611 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16227 event pairs, 58 based on Foata normal form. 266/3140 useless extension candidates. Maximal degree in co-relation 22176. Up to 1223 conditions per place. [2023-11-17 11:15:52,588 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 0 selfloop transitions, 0 changer transitions 665/665 dead transitions. [2023-11-17 11:15:52,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 665 transitions, 12071 flow [2023-11-17 11:15:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:15:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:15:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2023-11-17 11:15:52,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2023-11-17 11:15:52,590 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 137 transitions. [2023-11-17 11:15:52,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 137 transitions. [2023-11-17 11:15:52,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:15:52,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 137 transitions. [2023-11-17 11:15:52,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 11:15:52,591 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 11:15:52,591 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 11:15:52,591 INFO L175 Difference]: Start difference. First operand has 202 places, 201 transitions, 3566 flow. Second operand 8 states and 137 transitions. [2023-11-17 11:15:52,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 665 transitions, 12071 flow [2023-11-17 11:15:52,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 665 transitions, 10626 flow, removed 165 selfloop flow, removed 28 redundant places. [2023-11-17 11:15:52,853 INFO L231 Difference]: Finished difference. Result has 179 places, 0 transitions, 0 flow [2023-11-17 11:15:52,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=179, PETRI_TRANSITIONS=0} [2023-11-17 11:15:52,854 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 161 predicate places. [2023-11-17 11:15:52,854 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 0 transitions, 0 flow [2023-11-17 11:15:52,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 11:15:52,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 11:15:52,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 11:15:52,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 11:15:52,866 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 11:15:53,063 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 11:15:53,064 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 1] [2023-11-17 11:15:53,066 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:15:53,066 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:15:53,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:15:53 BasicIcfg [2023-11-17 11:15:53,071 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:15:53,071 INFO L158 Benchmark]: Toolchain (without parser) took 11771.96ms. Allocated memory was 297.8MB in the beginning and 429.9MB in the end (delta: 132.1MB). Free memory was 242.8MB in the beginning and 223.1MB in the end (delta: 19.7MB). Peak memory consumption was 256.1MB. Max. memory is 8.0GB. [2023-11-17 11:15:53,072 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 129.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:15:53,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.77ms. Allocated memory is still 297.8MB. Free memory was 242.4MB in the beginning and 223.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 11:15:53,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.20ms. Allocated memory is still 297.8MB. Free memory was 223.0MB in the beginning and 220.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:15:53,072 INFO L158 Benchmark]: Boogie Preprocessor took 39.74ms. Allocated memory is still 297.8MB. Free memory was 220.9MB in the beginning and 219.7MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:15:53,073 INFO L158 Benchmark]: RCFGBuilder took 392.48ms. Allocated memory is still 297.8MB. Free memory was 219.7MB in the beginning and 260.1MB in the end (delta: -40.4MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-11-17 11:15:53,073 INFO L158 Benchmark]: TraceAbstraction took 10853.41ms. Allocated memory was 297.8MB in the beginning and 429.9MB in the end (delta: 132.1MB). Free memory was 259.6MB in the beginning and 223.1MB in the end (delta: 36.4MB). Peak memory consumption was 271.8MB. Max. memory is 8.0GB. [2023-11-17 11:15:53,074 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 129.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 424.77ms. Allocated memory is still 297.8MB. Free memory was 242.4MB in the beginning and 223.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.20ms. Allocated memory is still 297.8MB. Free memory was 223.0MB in the beginning and 220.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.74ms. Allocated memory is still 297.8MB. Free memory was 220.9MB in the beginning and 219.7MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 392.48ms. Allocated memory is still 297.8MB. Free memory was 219.7MB in the beginning and 260.1MB in the end (delta: -40.4MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 10853.41ms. Allocated memory was 297.8MB in the beginning and 429.9MB in the end (delta: 132.1MB). Free memory was 259.6MB in the beginning and 223.1MB in the end (delta: 36.4MB). Peak memory consumption was 271.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 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: 30, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 30, dependent conditional: 0, dependent unconditional: 30, 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: 10.7s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1350 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1350 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1745 IncrementalHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 0 mSDtfsCounter, 1745 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 374 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3566occurred in iteration=12, InterpolantAutomatonStates: 177, 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, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 262 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 322 ConstructedInterpolants, 0 QuantifiedInterpolants, 1287 SizeOfPredicates, 34 NumberOfNonLiveVariables, 921 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 26 InterpolantComputations, 7 PerfectInterpolantSequences, 57/203 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 11:15:53,097 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...