/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/weaver/parallel-bakery-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:03:43,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:03:43,556 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 12:03:43,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:03:43,577 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:03:43,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:03:43,578 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:03:43,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:03:43,579 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:03:43,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:03:43,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:03:43,580 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:03:43,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:03:43,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:03:43,581 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:03:43,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:03:43,582 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:03:43,582 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:03:43,583 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:03:43,583 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:03:43,583 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:03:43,584 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:03:43,585 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:03:43,585 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:03:43,585 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:03:43,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:03:43,586 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:03:43,586 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:03:43,587 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:03:43,587 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:03:43,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:03:43,588 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:03:43,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:03:43,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:03:43,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:03:43,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:03:43,880 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:03:43,880 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:03:43,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-11-17 12:03:45,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:03:45,226 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:03:45,227 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-11-17 12:03:45,233 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbd60e067/9e7f79433fc54b8884bc6ec331569717/FLAGcb023ceed [2023-11-17 12:03:45,245 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbd60e067/9e7f79433fc54b8884bc6ec331569717 [2023-11-17 12:03:45,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:03:45,248 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:03:45,249 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:03:45,249 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:03:45,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:03:45,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621ad7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45, skipping insertion in model container [2023-11-17 12:03:45,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,288 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:03:45,438 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c[5465,5478] [2023-11-17 12:03:45,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:03:45,451 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:03:45,487 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c[5465,5478] [2023-11-17 12:03:45,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:03:45,495 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:03:45,495 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:03:45,502 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:03:45,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45 WrapperNode [2023-11-17 12:03:45,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:03:45,503 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:03:45,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:03:45,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:03:45,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,522 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,545 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 267 [2023-11-17 12:03:45,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:03:45,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:03:45,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:03:45,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:03:45,554 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,589 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:03:45,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:03:45,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:03:45,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:03:45,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (1/1) ... [2023-11-17 12:03:45,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:03:45,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:03:45,626 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 12:03:45,650 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 12:03:45,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:03:45,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:03:45,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:03:45,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:03:45,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:03:45,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:03:45,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:03:45,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:03:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:03:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:03:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:03:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:03:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:03:45,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:03:45,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:03:45,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:03:45,666 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 12:03:45,794 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:03:45,798 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:03:46,140 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:03:46,409 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:03:46,409 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 12:03:46,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:03:46 BoogieIcfgContainer [2023-11-17 12:03:46,411 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:03:46,413 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:03:46,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:03:46,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:03:46,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:03:45" (1/3) ... [2023-11-17 12:03:46,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662af9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:03:46, skipping insertion in model container [2023-11-17 12:03:46,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:03:45" (2/3) ... [2023-11-17 12:03:46,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662af9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:03:46, skipping insertion in model container [2023-11-17 12:03:46,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:03:46" (3/3) ... [2023-11-17 12:03:46,418 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-11-17 12:03:46,434 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:03:46,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:03:46,435 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:03:46,499 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 12:03:46,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 60 transitions, 141 flow [2023-11-17 12:03:46,581 INFO L124 PetriNetUnfolderBase]: 0/57 cut-off events. [2023-11-17 12:03:46,582 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:03:46,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 0/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 12:03:46,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 60 transitions, 141 flow [2023-11-17 12:03:46,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 56 transitions, 130 flow [2023-11-17 12:03:46,590 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:03:46,606 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 56 transitions, 130 flow [2023-11-17 12:03:46,608 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 56 transitions, 130 flow [2023-11-17 12:03:46,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 56 transitions, 130 flow [2023-11-17 12:03:46,632 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2023-11-17 12:03:46,632 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:03:46,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 56 events. 0/56 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-17 12:03:46,634 INFO L119 LiptonReduction]: Number of co-enabled transitions 1596 [2023-11-17 12:03:47,101 INFO L134 LiptonReduction]: Checked pairs total: 5217 [2023-11-17 12:03:47,102 INFO L136 LiptonReduction]: Total number of compositions: 13 [2023-11-17 12:03:47,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:03:47,126 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;@6f3b1cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:03:47,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 12:03:47,147 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:03:47,147 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2023-11-17 12:03:47,147 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:03:47,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:47,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:47,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:03:47,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1146470329, now seen corresponding path program 1 times [2023-11-17 12:03:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:47,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445958390] [2023-11-17 12:03:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:47,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:47,831 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 12:03:47,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:47,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445958390] [2023-11-17 12:03:47,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445958390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:03:47,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:03:47,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 12:03:47,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601338387] [2023-11-17 12:03:47,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:03:47,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:03:47,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:47,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:03:47,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:03:47,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-17 12:03:47,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 104 flow. Second operand has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 12:03:47,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:47,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-17 12:03:47,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:49,253 INFO L124 PetriNetUnfolderBase]: 6197/9396 cut-off events. [2023-11-17 12:03:49,253 INFO L125 PetriNetUnfolderBase]: For 481/481 co-relation queries the response was YES. [2023-11-17 12:03:49,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19189 conditions, 9396 events. 6197/9396 cut-off events. For 481/481 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 50462 event pairs, 2421 based on Foata normal form. 1/9385 useless extension candidates. Maximal degree in co-relation 16909. Up to 3168 conditions per place. [2023-11-17 12:03:49,314 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 158 selfloop transitions, 15 changer transitions 22/198 dead transitions. [2023-11-17 12:03:49,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 198 transitions, 858 flow [2023-11-17 12:03:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:03:49,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:03:49,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 438 transitions. [2023-11-17 12:03:49,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-11-17 12:03:49,335 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 438 transitions. [2023-11-17 12:03:49,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 438 transitions. [2023-11-17 12:03:49,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:49,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 438 transitions. [2023-11-17 12:03:49,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 39.81818181818182) internal successors, (438), 11 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 12:03:49,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:03:49,353 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:03:49,354 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 104 flow. Second operand 11 states and 438 transitions. [2023-11-17 12:03:49,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 198 transitions, 858 flow [2023-11-17 12:03:49,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 198 transitions, 810 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 12:03:49,373 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 184 flow [2023-11-17 12:03:49,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=184, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-11-17 12:03:49,378 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-11-17 12:03:49,379 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 184 flow [2023-11-17 12:03:49,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 12:03:49,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:49,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:49,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:03:49,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:03:49,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:49,382 INFO L85 PathProgramCache]: Analyzing trace with hash -867329291, now seen corresponding path program 2 times [2023-11-17 12:03:49,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:49,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393686809] [2023-11-17 12:03:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:49,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:50,040 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 12:03:50,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:50,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393686809] [2023-11-17 12:03:50,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393686809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:03:50,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:03:50,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 12:03:50,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074507897] [2023-11-17 12:03:50,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:03:50,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 12:03:50,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:50,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 12:03:50,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 12:03:50,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 73 [2023-11-17 12:03:50,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 184 flow. Second operand has 8 states, 8 states have (on average 23.625) internal successors, (189), 8 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 12:03:50,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:50,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 73 [2023-11-17 12:03:50,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:50,910 INFO L124 PetriNetUnfolderBase]: 5646/9361 cut-off events. [2023-11-17 12:03:50,910 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-17 12:03:50,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19179 conditions, 9361 events. 5646/9361 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 58479 event pairs, 1487 based on Foata normal form. 106/9212 useless extension candidates. Maximal degree in co-relation 19157. Up to 6388 conditions per place. [2023-11-17 12:03:50,979 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 104 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2023-11-17 12:03:50,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 147 transitions, 616 flow [2023-11-17 12:03:50,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:03:50,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:03:50,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 278 transitions. [2023-11-17 12:03:50,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476027397260274 [2023-11-17 12:03:50,982 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 278 transitions. [2023-11-17 12:03:50,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 278 transitions. [2023-11-17 12:03:50,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:50,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 278 transitions. [2023-11-17 12:03:50,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 34.75) internal successors, (278), 8 states have internal predecessors, (278), 0 states have call successors, (0), 0 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 12:03:50,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 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 12:03:50,985 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 0 states have call successors, (0), 0 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 12:03:50,985 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 184 flow. Second operand 8 states and 278 transitions. [2023-11-17 12:03:50,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 147 transitions, 616 flow [2023-11-17 12:03:50,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 147 transitions, 614 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 12:03:50,994 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 308 flow [2023-11-17 12:03:50,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=308, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2023-11-17 12:03:50,996 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2023-11-17 12:03:50,996 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 308 flow [2023-11-17 12:03:50,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.625) internal successors, (189), 8 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 12:03:50,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:50,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:50,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:03:51,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:03:51,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:51,008 INFO L85 PathProgramCache]: Analyzing trace with hash -341349545, now seen corresponding path program 3 times [2023-11-17 12:03:51,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:51,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560331971] [2023-11-17 12:03:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:51,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:51,109 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 12:03:51,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:51,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560331971] [2023-11-17 12:03:51,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560331971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:03:51,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:03:51,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:03:51,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980142459] [2023-11-17 12:03:51,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:03:51,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:03:51,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:51,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:03:51,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:03:51,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2023-11-17 12:03:51,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 12:03:51,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:51,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2023-11-17 12:03:51,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:51,839 INFO L124 PetriNetUnfolderBase]: 3873/6925 cut-off events. [2023-11-17 12:03:51,839 INFO L125 PetriNetUnfolderBase]: For 2008/2072 co-relation queries the response was YES. [2023-11-17 12:03:51,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16097 conditions, 6925 events. 3873/6925 cut-off events. For 2008/2072 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 46938 event pairs, 2664 based on Foata normal form. 82/6825 useless extension candidates. Maximal degree in co-relation 12449. Up to 5151 conditions per place. [2023-11-17 12:03:51,892 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 68 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2023-11-17 12:03:51,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 102 transitions, 533 flow [2023-11-17 12:03:51,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:03:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:03:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2023-11-17 12:03:51,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981735159817352 [2023-11-17 12:03:51,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 131 transitions. [2023-11-17 12:03:51,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 131 transitions. [2023-11-17 12:03:51,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:51,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 131 transitions. [2023-11-17 12:03:51,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 12:03:51,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 12:03:51,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 12:03:51,896 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 308 flow. Second operand 3 states and 131 transitions. [2023-11-17 12:03:51,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 102 transitions, 533 flow [2023-11-17 12:03:51,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 102 transitions, 533 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 12:03:51,922 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 336 flow [2023-11-17 12:03:51,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2023-11-17 12:03:51,923 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2023-11-17 12:03:51,923 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 336 flow [2023-11-17 12:03:51,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 12:03:51,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:51,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:51,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:03:51,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:03:51,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:51,925 INFO L85 PathProgramCache]: Analyzing trace with hash 147844485, now seen corresponding path program 4 times [2023-11-17 12:03:51,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:51,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842104919] [2023-11-17 12:03:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:51,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:52,036 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 12:03:52,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:52,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842104919] [2023-11-17 12:03:52,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842104919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:03:52,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:03:52,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:03:52,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644059030] [2023-11-17 12:03:52,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:03:52,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:03:52,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:52,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:03:52,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:03:52,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2023-11-17 12:03:52,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 12:03:52,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:52,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2023-11-17 12:03:52,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:52,595 INFO L124 PetriNetUnfolderBase]: 3708/6706 cut-off events. [2023-11-17 12:03:52,595 INFO L125 PetriNetUnfolderBase]: For 3622/3632 co-relation queries the response was YES. [2023-11-17 12:03:52,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16641 conditions, 6706 events. 3708/6706 cut-off events. For 3622/3632 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 45620 event pairs, 2906 based on Foata normal form. 54/6523 useless extension candidates. Maximal degree in co-relation 13139. Up to 5106 conditions per place. [2023-11-17 12:03:52,649 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 68 selfloop transitions, 9 changer transitions 0/103 dead transitions. [2023-11-17 12:03:52,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 103 transitions, 589 flow [2023-11-17 12:03:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:03:52,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:03:52,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2023-11-17 12:03:52,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981735159817352 [2023-11-17 12:03:52,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 131 transitions. [2023-11-17 12:03:52,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 131 transitions. [2023-11-17 12:03:52,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:52,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 131 transitions. [2023-11-17 12:03:52,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 12:03:52,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 12:03:52,653 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 12:03:52,653 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 336 flow. Second operand 3 states and 131 transitions. [2023-11-17 12:03:52,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 103 transitions, 589 flow [2023-11-17 12:03:52,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 103 transitions, 561 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:03:52,668 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 351 flow [2023-11-17 12:03:52,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2023-11-17 12:03:52,669 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-11-17 12:03:52,669 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 351 flow [2023-11-17 12:03:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 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 12:03:52,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:52,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:52,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:03:52,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:03:52,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:52,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1423403285, now seen corresponding path program 5 times [2023-11-17 12:03:52,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:52,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814060927] [2023-11-17 12:03:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:52,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:52,881 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 12:03:52,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:52,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814060927] [2023-11-17 12:03:52,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814060927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:03:52,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:03:52,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 12:03:52,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12324903] [2023-11-17 12:03:52,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:03:52,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:03:52,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:52,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:03:52,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:03:52,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-17 12:03:52,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 351 flow. Second operand has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 12:03:52,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:52,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-17 12:03:52,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:54,462 INFO L124 PetriNetUnfolderBase]: 7978/12515 cut-off events. [2023-11-17 12:03:54,463 INFO L125 PetriNetUnfolderBase]: For 8088/8088 co-relation queries the response was YES. [2023-11-17 12:03:54,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33375 conditions, 12515 events. 7978/12515 cut-off events. For 8088/8088 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 73922 event pairs, 2700 based on Foata normal form. 1/12497 useless extension candidates. Maximal degree in co-relation 20678. Up to 3711 conditions per place. [2023-11-17 12:03:54,559 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 221 selfloop transitions, 26 changer transitions 27/278 dead transitions. [2023-11-17 12:03:54,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 278 transitions, 1645 flow [2023-11-17 12:03:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:03:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:03:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 454 transitions. [2023-11-17 12:03:54,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653798256537983 [2023-11-17 12:03:54,562 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 454 transitions. [2023-11-17 12:03:54,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 454 transitions. [2023-11-17 12:03:54,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:54,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 454 transitions. [2023-11-17 12:03:54,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 41.27272727272727) internal successors, (454), 11 states have internal predecessors, (454), 0 states have call successors, (0), 0 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 12:03:54,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:03:54,565 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:03:54,565 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 351 flow. Second operand 11 states and 454 transitions. [2023-11-17 12:03:54,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 278 transitions, 1645 flow [2023-11-17 12:03:54,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 278 transitions, 1583 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:03:54,585 INFO L231 Difference]: Finished difference. Result has 87 places, 101 transitions, 540 flow [2023-11-17 12:03:54,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=540, PETRI_PLACES=87, PETRI_TRANSITIONS=101} [2023-11-17 12:03:54,587 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 34 predicate places. [2023-11-17 12:03:54,587 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 101 transitions, 540 flow [2023-11-17 12:03:54,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 12:03:54,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:54,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:54,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:03:54,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:03:54,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:54,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1073811523, now seen corresponding path program 6 times [2023-11-17 12:03:54,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:54,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220380980] [2023-11-17 12:03:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:54,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:55,002 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 12:03:55,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:55,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220380980] [2023-11-17 12:03:55,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220380980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:03:55,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:03:55,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 12:03:55,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801948056] [2023-11-17 12:03:55,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:03:55,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 12:03:55,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:55,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 12:03:55,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-11-17 12:03:55,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2023-11-17 12:03:55,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 101 transitions, 540 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 12:03:55,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:55,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2023-11-17 12:03:55,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:56,410 INFO L124 PetriNetUnfolderBase]: 8600/14865 cut-off events. [2023-11-17 12:03:56,410 INFO L125 PetriNetUnfolderBase]: For 6992/7154 co-relation queries the response was YES. [2023-11-17 12:03:56,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38567 conditions, 14865 events. 8600/14865 cut-off events. For 6992/7154 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 107766 event pairs, 2446 based on Foata normal form. 150/14678 useless extension candidates. Maximal degree in co-relation 38505. Up to 4706 conditions per place. [2023-11-17 12:03:56,531 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 106 selfloop transitions, 15 changer transitions 2/166 dead transitions. [2023-11-17 12:03:56,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 166 transitions, 980 flow [2023-11-17 12:03:56,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:03:56,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:03:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2023-11-17 12:03:56,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502283105022831 [2023-11-17 12:03:56,534 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 220 transitions. [2023-11-17 12:03:56,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 220 transitions. [2023-11-17 12:03:56,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:56,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 220 transitions. [2023-11-17 12:03:56,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 12:03:56,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 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 12:03:56,536 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 73.0) internal successors, (511), 7 states have internal predecessors, (511), 0 states have call successors, (0), 0 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 12:03:56,536 INFO L175 Difference]: Start difference. First operand has 87 places, 101 transitions, 540 flow. Second operand 6 states and 220 transitions. [2023-11-17 12:03:56,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 166 transitions, 980 flow [2023-11-17 12:03:56,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 166 transitions, 974 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 12:03:56,614 INFO L231 Difference]: Finished difference. Result has 92 places, 107 transitions, 613 flow [2023-11-17 12:03:56,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=613, PETRI_PLACES=92, PETRI_TRANSITIONS=107} [2023-11-17 12:03:56,616 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2023-11-17 12:03:56,616 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 107 transitions, 613 flow [2023-11-17 12:03:56,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 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 12:03:56,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:56,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:56,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:03:56,617 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:03:56,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1025546831, now seen corresponding path program 7 times [2023-11-17 12:03:56,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:56,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292917991] [2023-11-17 12:03:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:56,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:03:56,809 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 12:03:56,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:03:56,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292917991] [2023-11-17 12:03:56,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292917991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:03:56,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:03:56,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 12:03:56,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562726680] [2023-11-17 12:03:56,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:03:56,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:03:56,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:03:56,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:03:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:03:56,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-17 12:03:56,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 107 transitions, 613 flow. Second operand has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 12:03:56,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:03:56,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-17 12:03:56,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:03:58,955 INFO L124 PetriNetUnfolderBase]: 13657/21056 cut-off events. [2023-11-17 12:03:58,956 INFO L125 PetriNetUnfolderBase]: For 21865/22041 co-relation queries the response was YES. [2023-11-17 12:03:59,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66128 conditions, 21056 events. 13657/21056 cut-off events. For 21865/22041 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 131613 event pairs, 5054 based on Foata normal form. 147/21148 useless extension candidates. Maximal degree in co-relation 61507. Up to 7755 conditions per place. [2023-11-17 12:03:59,221 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 236 selfloop transitions, 36 changer transitions 30/307 dead transitions. [2023-11-17 12:03:59,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 307 transitions, 2086 flow [2023-11-17 12:03:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:03:59,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:03:59,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 450 transitions. [2023-11-17 12:03:59,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603985056039851 [2023-11-17 12:03:59,224 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 450 transitions. [2023-11-17 12:03:59,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 450 transitions. [2023-11-17 12:03:59,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:03:59,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 450 transitions. [2023-11-17 12:03:59,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 40.90909090909091) internal successors, (450), 11 states have internal predecessors, (450), 0 states have call successors, (0), 0 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 12:03:59,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:03:59,229 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:03:59,229 INFO L175 Difference]: Start difference. First operand has 92 places, 107 transitions, 613 flow. Second operand 11 states and 450 transitions. [2023-11-17 12:03:59,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 307 transitions, 2086 flow [2023-11-17 12:03:59,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 307 transitions, 2057 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:03:59,469 INFO L231 Difference]: Finished difference. Result has 106 places, 128 transitions, 893 flow [2023-11-17 12:03:59,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=893, PETRI_PLACES=106, PETRI_TRANSITIONS=128} [2023-11-17 12:03:59,470 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2023-11-17 12:03:59,470 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 128 transitions, 893 flow [2023-11-17 12:03:59,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 12:03:59,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:03:59,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:03:59,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 12:03:59,471 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:03:59,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:03:59,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1897461207, now seen corresponding path program 8 times [2023-11-17 12:03:59,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:03:59,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621419747] [2023-11-17 12:03:59,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:03:59,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:03:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:04:00,185 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 12:04:00,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:04:00,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621419747] [2023-11-17 12:04:00,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621419747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:04:00,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:04:00,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 12:04:00,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656527493] [2023-11-17 12:04:00,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:04:00,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:04:00,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:04:00,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:04:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-17 12:04:00,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 73 [2023-11-17 12:04:00,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 128 transitions, 893 flow. Second operand has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 12:04:00,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:04:00,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 73 [2023-11-17 12:04:00,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:04:05,130 INFO L124 PetriNetUnfolderBase]: 29420/51799 cut-off events. [2023-11-17 12:04:05,130 INFO L125 PetriNetUnfolderBase]: For 57168/57941 co-relation queries the response was YES. [2023-11-17 12:04:05,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159605 conditions, 51799 events. 29420/51799 cut-off events. For 57168/57941 co-relation queries the response was YES. Maximal size of possible extension queue 1807. Compared 467583 event pairs, 4226 based on Foata normal form. 426/51078 useless extension candidates. Maximal degree in co-relation 159495. Up to 12779 conditions per place. [2023-11-17 12:04:05,628 INFO L140 encePairwiseOnDemand]: 54/73 looper letters, 383 selfloop transitions, 162 changer transitions 6/615 dead transitions. [2023-11-17 12:04:05,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 615 transitions, 3853 flow [2023-11-17 12:04:05,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 12:04:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 12:04:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 893 transitions. [2023-11-17 12:04:05,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5560398505603985 [2023-11-17 12:04:05,633 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 893 transitions. [2023-11-17 12:04:05,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 893 transitions. [2023-11-17 12:04:05,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:04:05,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 893 transitions. [2023-11-17 12:04:05,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 40.59090909090909) internal successors, (893), 22 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:04:05,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 73.0) internal successors, (1679), 23 states have internal predecessors, (1679), 0 states have call successors, (0), 0 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 12:04:05,640 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 73.0) internal successors, (1679), 23 states have internal predecessors, (1679), 0 states have call successors, (0), 0 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 12:04:05,640 INFO L175 Difference]: Start difference. First operand has 106 places, 128 transitions, 893 flow. Second operand 22 states and 893 transitions. [2023-11-17 12:04:05,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 615 transitions, 3853 flow [2023-11-17 12:04:08,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 615 transitions, 3816 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-17 12:04:08,220 INFO L231 Difference]: Finished difference. Result has 142 places, 290 transitions, 2445 flow [2023-11-17 12:04:08,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2445, PETRI_PLACES=142, PETRI_TRANSITIONS=290} [2023-11-17 12:04:08,221 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 89 predicate places. [2023-11-17 12:04:08,221 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 290 transitions, 2445 flow [2023-11-17 12:04:08,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 12:04:08,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:04:08,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:04:08,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 12:04:08,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:04:08,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:04:08,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1865811651, now seen corresponding path program 9 times [2023-11-17 12:04:08,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:04:08,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025115303] [2023-11-17 12:04:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:04:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:04:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:04:08,625 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 12:04:08,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:04:08,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025115303] [2023-11-17 12:04:08,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025115303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:04:08,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:04:08,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 12:04:08,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515405299] [2023-11-17 12:04:08,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:04:08,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:04:08,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:04:08,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:04:08,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:04:08,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 73 [2023-11-17 12:04:08,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 290 transitions, 2445 flow. Second operand has 10 states, 10 states have (on average 22.7) internal successors, (227), 10 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 12:04:08,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:04:08,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 73 [2023-11-17 12:04:08,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:04:16,693 INFO L124 PetriNetUnfolderBase]: 32504/58261 cut-off events. [2023-11-17 12:04:16,693 INFO L125 PetriNetUnfolderBase]: For 261416/265358 co-relation queries the response was YES. [2023-11-17 12:04:17,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245764 conditions, 58261 events. 32504/58261 cut-off events. For 261416/265358 co-relation queries the response was YES. Maximal size of possible extension queue 2039. Compared 542549 event pairs, 5086 based on Foata normal form. 2094/59306 useless extension candidates. Maximal degree in co-relation 237417. Up to 13841 conditions per place. [2023-11-17 12:04:17,522 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 334 selfloop transitions, 248 changer transitions 13/659 dead transitions. [2023-11-17 12:04:17,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 659 transitions, 6509 flow [2023-11-17 12:04:17,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 12:04:17,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 12:04:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 498 transitions. [2023-11-17 12:04:17,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487279843444227 [2023-11-17 12:04:17,525 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 498 transitions. [2023-11-17 12:04:17,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 498 transitions. [2023-11-17 12:04:17,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:04:17,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 498 transitions. [2023-11-17 12:04:17,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 35.57142857142857) internal successors, (498), 14 states have internal predecessors, (498), 0 states have call successors, (0), 0 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 12:04:17,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 73.0) internal successors, (1095), 15 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 12:04:17,530 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 73.0) internal successors, (1095), 15 states have internal predecessors, (1095), 0 states have call successors, (0), 0 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 12:04:17,530 INFO L175 Difference]: Start difference. First operand has 142 places, 290 transitions, 2445 flow. Second operand 14 states and 498 transitions. [2023-11-17 12:04:17,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 659 transitions, 6509 flow [2023-11-17 12:04:20,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 659 transitions, 6385 flow, removed 62 selfloop flow, removed 0 redundant places. [2023-11-17 12:04:20,757 INFO L231 Difference]: Finished difference. Result has 166 places, 447 transitions, 4699 flow [2023-11-17 12:04:20,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4699, PETRI_PLACES=166, PETRI_TRANSITIONS=447} [2023-11-17 12:04:20,758 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 113 predicate places. [2023-11-17 12:04:20,758 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 447 transitions, 4699 flow [2023-11-17 12:04:20,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.7) internal successors, (227), 10 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 12:04:20,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:04:20,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:04:20,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 12:04:20,759 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:04:20,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:04:20,759 INFO L85 PathProgramCache]: Analyzing trace with hash -988761565, now seen corresponding path program 10 times [2023-11-17 12:04:20,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:04:20,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414036150] [2023-11-17 12:04:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:04:20,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:04:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:04:20,917 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 12:04:20,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:04:20,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414036150] [2023-11-17 12:04:20,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414036150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:04:20,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:04:20,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 12:04:20,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883240762] [2023-11-17 12:04:20,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:04:20,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:04:20,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:04:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:04:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:04:20,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-17 12:04:20,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 447 transitions, 4699 flow. Second operand has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 12:04:20,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:04:20,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-17 12:04:20,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:04:35,059 INFO L124 PetriNetUnfolderBase]: 59263/90418 cut-off events. [2023-11-17 12:04:35,060 INFO L125 PetriNetUnfolderBase]: For 530405/531797 co-relation queries the response was YES. [2023-11-17 12:04:36,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427091 conditions, 90418 events. 59263/90418 cut-off events. For 530405/531797 co-relation queries the response was YES. Maximal size of possible extension queue 2070. Compared 688319 event pairs, 20022 based on Foata normal form. 677/90645 useless extension candidates. Maximal degree in co-relation 409806. Up to 34265 conditions per place. [2023-11-17 12:04:36,311 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 1013 selfloop transitions, 38 changer transitions 175/1252 dead transitions. [2023-11-17 12:04:36,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1252 transitions, 15227 flow [2023-11-17 12:04:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:04:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:04:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 446 transitions. [2023-11-17 12:04:36,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5554171855541719 [2023-11-17 12:04:36,313 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 446 transitions. [2023-11-17 12:04:36,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 446 transitions. [2023-11-17 12:04:36,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:04:36,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 446 transitions. [2023-11-17 12:04:36,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 40.54545454545455) internal successors, (446), 11 states have internal predecessors, (446), 0 states have call successors, (0), 0 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 12:04:36,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:04:36,316 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:04:36,316 INFO L175 Difference]: Start difference. First operand has 166 places, 447 transitions, 4699 flow. Second operand 11 states and 446 transitions. [2023-11-17 12:04:36,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1252 transitions, 15227 flow [2023-11-17 12:04:45,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 1252 transitions, 15054 flow, removed 86 selfloop flow, removed 1 redundant places. [2023-11-17 12:04:45,990 INFO L231 Difference]: Finished difference. Result has 179 places, 450 transitions, 4796 flow [2023-11-17 12:04:45,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4650, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4796, PETRI_PLACES=179, PETRI_TRANSITIONS=450} [2023-11-17 12:04:45,991 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2023-11-17 12:04:45,991 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 450 transitions, 4796 flow [2023-11-17 12:04:45,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 12:04:45,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:04:45,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:04:45,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 12:04:45,992 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:04:45,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:04:45,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1425753525, now seen corresponding path program 11 times [2023-11-17 12:04:45,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:04:45,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166426170] [2023-11-17 12:04:45,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:04:45,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:04:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:04:46,143 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 12:04:46,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:04:46,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166426170] [2023-11-17 12:04:46,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166426170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:04:46,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:04:46,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 12:04:46,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315532886] [2023-11-17 12:04:46,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:04:46,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:04:46,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:04:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:04:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:04:46,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 73 [2023-11-17 12:04:46,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 450 transitions, 4796 flow. Second operand has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 12:04:46,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:04:46,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 73 [2023-11-17 12:04:46,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:04:59,981 INFO L124 PetriNetUnfolderBase]: 58022/88482 cut-off events. [2023-11-17 12:04:59,981 INFO L125 PetriNetUnfolderBase]: For 528457/529865 co-relation queries the response was YES. [2023-11-17 12:05:01,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424067 conditions, 88482 events. 58022/88482 cut-off events. For 528457/529865 co-relation queries the response was YES. Maximal size of possible extension queue 2031. Compared 673135 event pairs, 18255 based on Foata normal form. 686/88708 useless extension candidates. Maximal degree in co-relation 423794. Up to 27613 conditions per place. [2023-11-17 12:05:01,891 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 979 selfloop transitions, 36 changer transitions 170/1211 dead transitions. [2023-11-17 12:05:01,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 1211 transitions, 15151 flow [2023-11-17 12:05:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:05:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:05:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 450 transitions. [2023-11-17 12:05:01,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603985056039851 [2023-11-17 12:05:01,893 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 450 transitions. [2023-11-17 12:05:01,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 450 transitions. [2023-11-17 12:05:01,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:05:01,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 450 transitions. [2023-11-17 12:05:01,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 40.90909090909091) internal successors, (450), 11 states have internal predecessors, (450), 0 states have call successors, (0), 0 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 12:05:01,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:05:01,897 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:05:01,897 INFO L175 Difference]: Start difference. First operand has 179 places, 450 transitions, 4796 flow. Second operand 11 states and 450 transitions. [2023-11-17 12:05:01,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 1211 transitions, 15151 flow [2023-11-17 12:05:12,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 1211 transitions, 15079 flow, removed 22 selfloop flow, removed 5 redundant places. [2023-11-17 12:05:12,381 INFO L231 Difference]: Finished difference. Result has 184 places, 445 transitions, 4763 flow [2023-11-17 12:05:12,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4740, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4763, PETRI_PLACES=184, PETRI_TRANSITIONS=445} [2023-11-17 12:05:12,382 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 131 predicate places. [2023-11-17 12:05:12,382 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 445 transitions, 4763 flow [2023-11-17 12:05:12,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 12:05:12,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:05:12,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:05:12,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 12:05:12,383 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:05:12,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:05:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1682159041, now seen corresponding path program 12 times [2023-11-17 12:05:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:05:12,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287683481] [2023-11-17 12:05:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:05:12,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:05:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:05:12,796 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 12:05:12,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:05:12,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287683481] [2023-11-17 12:05:12,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287683481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:05:12,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:05:12,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 12:05:12,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709789421] [2023-11-17 12:05:12,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:05:12,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:05:12,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:05:12,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:05:12,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:05:12,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 73 [2023-11-17 12:05:12,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 445 transitions, 4763 flow. Second operand has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 12:05:12,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:05:12,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 73 [2023-11-17 12:05:12,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:05:26,243 INFO L124 PetriNetUnfolderBase]: 46606/83075 cut-off events. [2023-11-17 12:05:26,243 INFO L125 PetriNetUnfolderBase]: For 534087/540500 co-relation queries the response was YES. [2023-11-17 12:05:27,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400312 conditions, 83075 events. 46606/83075 cut-off events. For 534087/540500 co-relation queries the response was YES. Maximal size of possible extension queue 2883. Compared 803512 event pairs, 10477 based on Foata normal form. 2170/84095 useless extension candidates. Maximal degree in co-relation 399907. Up to 22436 conditions per place. [2023-11-17 12:05:27,979 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 500 selfloop transitions, 334 changer transitions 23/924 dead transitions. [2023-11-17 12:05:27,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 924 transitions, 11218 flow [2023-11-17 12:05:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 12:05:27,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 12:05:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 459 transitions. [2023-11-17 12:05:27,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523972602739726 [2023-11-17 12:05:27,982 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 459 transitions. [2023-11-17 12:05:27,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 459 transitions. [2023-11-17 12:05:27,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:05:27,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 459 transitions. [2023-11-17 12:05:27,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 38.25) internal successors, (459), 12 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 12:05:27,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 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 12:05:27,985 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 73.0) internal successors, (949), 13 states have internal predecessors, (949), 0 states have call successors, (0), 0 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 12:05:27,985 INFO L175 Difference]: Start difference. First operand has 184 places, 445 transitions, 4763 flow. Second operand 12 states and 459 transitions. [2023-11-17 12:05:27,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 924 transitions, 11218 flow [2023-11-17 12:05:36,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 924 transitions, 11128 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-11-17 12:05:36,997 INFO L231 Difference]: Finished difference. Result has 194 places, 665 transitions, 8927 flow [2023-11-17 12:05:36,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4679, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8927, PETRI_PLACES=194, PETRI_TRANSITIONS=665} [2023-11-17 12:05:36,998 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 141 predicate places. [2023-11-17 12:05:36,998 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 665 transitions, 8927 flow [2023-11-17 12:05:36,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 12:05:36,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:05:36,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:05:36,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 12:05:36,999 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:05:36,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:05:36,999 INFO L85 PathProgramCache]: Analyzing trace with hash 803592975, now seen corresponding path program 13 times [2023-11-17 12:05:36,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:05:36,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419602113] [2023-11-17 12:05:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:05:37,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:05:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:05:37,337 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 12:05:37,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:05:37,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419602113] [2023-11-17 12:05:37,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419602113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:05:37,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:05:37,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 12:05:37,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170639381] [2023-11-17 12:05:37,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:05:37,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:05:37,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:05:37,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:05:37,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:05:37,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 73 [2023-11-17 12:05:37,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 665 transitions, 8927 flow. Second operand has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 12:05:37,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:05:37,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 73 [2023-11-17 12:05:37,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:05:52,275 INFO L124 PetriNetUnfolderBase]: 47467/85016 cut-off events. [2023-11-17 12:05:52,276 INFO L125 PetriNetUnfolderBase]: For 760199/772209 co-relation queries the response was YES. [2023-11-17 12:05:53,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436802 conditions, 85016 events. 47467/85016 cut-off events. For 760199/772209 co-relation queries the response was YES. Maximal size of possible extension queue 2934. Compared 829550 event pairs, 19682 based on Foata normal form. 2663/86386 useless extension candidates. Maximal degree in co-relation 425721. Up to 60731 conditions per place. [2023-11-17 12:05:53,696 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 616 selfloop transitions, 168 changer transitions 32/883 dead transitions. [2023-11-17 12:05:53,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 883 transitions, 13114 flow [2023-11-17 12:05:53,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:05:53,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:05:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 375 transitions. [2023-11-17 12:05:53,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4669987546699875 [2023-11-17 12:05:53,698 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 375 transitions. [2023-11-17 12:05:53,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 375 transitions. [2023-11-17 12:05:53,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:05:53,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 375 transitions. [2023-11-17 12:05:53,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 34.09090909090909) internal successors, (375), 11 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 12:05:53,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:05:53,701 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:05:53,701 INFO L175 Difference]: Start difference. First operand has 194 places, 665 transitions, 8927 flow. Second operand 11 states and 375 transitions. [2023-11-17 12:05:53,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 883 transitions, 13114 flow [2023-11-17 12:06:01,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 883 transitions, 12965 flow, removed 65 selfloop flow, removed 2 redundant places. [2023-11-17 12:06:01,819 INFO L231 Difference]: Finished difference. Result has 209 places, 713 transitions, 10229 flow [2023-11-17 12:06:01,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8738, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10229, PETRI_PLACES=209, PETRI_TRANSITIONS=713} [2023-11-17 12:06:01,820 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 156 predicate places. [2023-11-17 12:06:01,820 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 713 transitions, 10229 flow [2023-11-17 12:06:01,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 12:06:01,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:01,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:01,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 12:06:01,820 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:06:01,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:01,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1951825477, now seen corresponding path program 14 times [2023-11-17 12:06:01,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:01,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631744816] [2023-11-17 12:06:01,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:01,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:02,099 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 12:06:02,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:02,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631744816] [2023-11-17 12:06:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631744816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:02,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:02,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 12:06:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669237022] [2023-11-17 12:06:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:02,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:06:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:06:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:06:02,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 73 [2023-11-17 12:06:02,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 713 transitions, 10229 flow. Second operand has 10 states, 10 states have (on average 22.7) internal successors, (227), 10 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 12:06:02,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:02,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 73 [2023-11-17 12:06:02,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:18,525 INFO L124 PetriNetUnfolderBase]: 45048/80015 cut-off events. [2023-11-17 12:06:18,526 INFO L125 PetriNetUnfolderBase]: For 813529/826697 co-relation queries the response was YES. [2023-11-17 12:06:19,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426319 conditions, 80015 events. 45048/80015 cut-off events. For 813529/826697 co-relation queries the response was YES. Maximal size of possible extension queue 2783. Compared 772017 event pairs, 6065 based on Foata normal form. 5060/83893 useless extension candidates. Maximal degree in co-relation 418996. Up to 17598 conditions per place. [2023-11-17 12:06:20,206 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 463 selfloop transitions, 450 changer transitions 49/1029 dead transitions. [2023-11-17 12:06:20,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 1029 transitions, 15783 flow [2023-11-17 12:06:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 12:06:20,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 12:06:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 551 transitions. [2023-11-17 12:06:20,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031963470319635 [2023-11-17 12:06:20,208 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 551 transitions. [2023-11-17 12:06:20,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 551 transitions. [2023-11-17 12:06:20,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:20,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 551 transitions. [2023-11-17 12:06:20,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 36.733333333333334) internal successors, (551), 15 states have internal predecessors, (551), 0 states have call successors, (0), 0 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 12:06:20,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 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 12:06:20,214 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 73.0) internal successors, (1168), 16 states have internal predecessors, (1168), 0 states have call successors, (0), 0 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 12:06:20,214 INFO L175 Difference]: Start difference. First operand has 209 places, 713 transitions, 10229 flow. Second operand 15 states and 551 transitions. [2023-11-17 12:06:20,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 1029 transitions, 15783 flow [2023-11-17 12:06:28,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 1029 transitions, 15590 flow, removed 90 selfloop flow, removed 1 redundant places. [2023-11-17 12:06:28,593 INFO L231 Difference]: Finished difference. Result has 230 places, 739 transitions, 12131 flow [2023-11-17 12:06:28,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9370, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=12131, PETRI_PLACES=230, PETRI_TRANSITIONS=739} [2023-11-17 12:06:28,594 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2023-11-17 12:06:28,594 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 739 transitions, 12131 flow [2023-11-17 12:06:28,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.7) internal successors, (227), 10 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 12:06:28,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:28,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:28,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 12:06:28,594 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:06:28,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash 252907107, now seen corresponding path program 15 times [2023-11-17 12:06:28,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:28,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260249172] [2023-11-17 12:06:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:28,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:29,019 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 12:06:29,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:29,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260249172] [2023-11-17 12:06:29,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260249172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:29,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:29,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 12:06:29,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400713694] [2023-11-17 12:06:29,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:29,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:06:29,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:29,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:06:29,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:06:29,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 73 [2023-11-17 12:06:29,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 739 transitions, 12131 flow. Second operand has 10 states, 10 states have (on average 22.7) internal successors, (227), 10 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 12:06:29,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:29,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 73 [2023-11-17 12:06:29,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:56,681 INFO L124 PetriNetUnfolderBase]: 66741/119862 cut-off events. [2023-11-17 12:06:56,681 INFO L125 PetriNetUnfolderBase]: For 1563620/1581934 co-relation queries the response was YES. [2023-11-17 12:06:58,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677627 conditions, 119862 events. 66741/119862 cut-off events. For 1563620/1581934 co-relation queries the response was YES. Maximal size of possible extension queue 4886. Compared 1239952 event pairs, 12489 based on Foata normal form. 5468/123819 useless extension candidates. Maximal degree in co-relation 665247. Up to 45239 conditions per place. [2023-11-17 12:06:59,398 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 749 selfloop transitions, 454 changer transitions 21/1291 dead transitions. [2023-11-17 12:06:59,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 1291 transitions, 22382 flow [2023-11-17 12:06:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:06:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:06:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 427 transitions. [2023-11-17 12:06:59,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317559153175592 [2023-11-17 12:06:59,400 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 427 transitions. [2023-11-17 12:06:59,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 427 transitions. [2023-11-17 12:06:59,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:59,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 427 transitions. [2023-11-17 12:06:59,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 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 12:06:59,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:06:59,403 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 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 12:06:59,403 INFO L175 Difference]: Start difference. First operand has 230 places, 739 transitions, 12131 flow. Second operand 11 states and 427 transitions. [2023-11-17 12:06:59,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 1291 transitions, 22382 flow [2023-11-17 12:07:30,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 1291 transitions, 22064 flow, removed 124 selfloop flow, removed 3 redundant places. [2023-11-17 12:07:30,560 INFO L231 Difference]: Finished difference. Result has 245 places, 1007 transitions, 18388 flow [2023-11-17 12:07:30,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11929, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18388, PETRI_PLACES=245, PETRI_TRANSITIONS=1007} [2023-11-17 12:07:30,560 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2023-11-17 12:07:30,560 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 1007 transitions, 18388 flow [2023-11-17 12:07:30,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.7) internal successors, (227), 10 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 12:07:30,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:07:30,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:07:30,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 12:07:30,561 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:07:30,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:07:30,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1757955993, now seen corresponding path program 16 times [2023-11-17 12:07:30,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:07:30,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877794314] [2023-11-17 12:07:30,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:07:30,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:07:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:30,860 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 12:07:30,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:07:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877794314] [2023-11-17 12:07:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877794314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:07:30,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:07:30,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 12:07:30,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8293408] [2023-11-17 12:07:30,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:07:30,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 12:07:30,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:30,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 12:07:30,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:07:30,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 73 [2023-11-17 12:07:30,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 1007 transitions, 18388 flow. Second operand has 9 states, 9 states have (on average 23.11111111111111) internal successors, (208), 9 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 12:07:30,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:30,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 73 [2023-11-17 12:07:30,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand