/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue_longer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 14:57:11,920 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 14:57:12,000 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 14:57:12,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 14:57:12,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 14:57:12,043 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 14:57:12,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 14:57:12,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 14:57:12,044 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 14:57:12,044 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 14:57:12,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 14:57:12,045 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 14:57:12,045 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 14:57:12,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 14:57:12,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 14:57:12,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 14:57:12,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 14:57:12,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 14:57:12,047 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 14:57:12,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 14:57:12,048 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 14:57:12,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 14:57:12,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 14:57:12,049 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 14:57:12,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 14:57:12,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 14:57:12,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 14:57:12,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 14:57:12,050 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 14:57:12,050 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 14:57:12,050 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 14:57:12,050 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 14:57:12,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 14:57:12,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 14:57:12,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 14:57:12,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 14:57:12,284 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 14:57:12,284 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 14:57:12,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longer.i [2023-11-17 14:57:13,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 14:57:13,671 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 14:57:13,672 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i [2023-11-17 14:57:13,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20ff21a30/746b9df2301c4e44b22b95ccaa24eb17/FLAG0f8717bb5 [2023-11-17 14:57:13,704 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20ff21a30/746b9df2301c4e44b22b95ccaa24eb17 [2023-11-17 14:57:13,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 14:57:13,708 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 14:57:13,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 14:57:13,709 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 14:57:13,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 14:57:13,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:57:13" (1/1) ... [2023-11-17 14:57:13,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66a4c288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:13, skipping insertion in model container [2023-11-17 14:57:13,715 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 02:57:13" (1/1) ... [2023-11-17 14:57:13,774 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 14:57:14,135 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43296,43309] [2023-11-17 14:57:14,143 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43503,43516] [2023-11-17 14:57:14,150 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43783,43796] [2023-11-17 14:57:14,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 14:57:14,165 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 14:57:14,214 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43296,43309] [2023-11-17 14:57:14,215 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43503,43516] [2023-11-17 14:57:14,218 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longer.i[43783,43796] [2023-11-17 14:57:14,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 14:57:14,267 INFO L206 MainTranslator]: Completed translation [2023-11-17 14:57:14,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14 WrapperNode [2023-11-17 14:57:14,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 14:57:14,268 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 14:57:14,268 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 14:57:14,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 14:57:14,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (1/1) ... [2023-11-17 14:57:14,290 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (1/1) ... [2023-11-17 14:57:14,322 INFO L138 Inliner]: procedures = 275, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251 [2023-11-17 14:57:14,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 14:57:14,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 14:57:14,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 14:57:14,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 14:57:14,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (1/1) ... [2023-11-17 14:57:14,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (1/1) ... [2023-11-17 14:57:14,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (1/1) ... [2023-11-17 14:57:14,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (1/1) ... [2023-11-17 14:57:14,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (1/1) ... [2023-11-17 14:57:14,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (1/1) ... [2023-11-17 14:57:14,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (1/1) ... [2023-11-17 14:57:14,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (1/1) ... [2023-11-17 14:57:14,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 14:57:14,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 14:57:14,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 14:57:14,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 14:57:14,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (1/1) ... [2023-11-17 14:57:14,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 14:57:14,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 14:57:14,401 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 14:57:14,409 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 14:57:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 14:57:14,427 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 14:57:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 14:57:14,428 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 14:57:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 14:57:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 14:57:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 14:57:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 14:57:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 14:57:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 14:57:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 14:57:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 14:57:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 14:57:14,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 14:57:14,430 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 14:57:14,587 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 14:57:14,588 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 14:57:14,870 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 14:57:14,895 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 14:57:14,895 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 14:57:14,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:57:14 BoogieIcfgContainer [2023-11-17 14:57:14,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 14:57:14,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 14:57:14,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 14:57:14,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 14:57:14,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 02:57:13" (1/3) ... [2023-11-17 14:57:14,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629093e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:57:14, skipping insertion in model container [2023-11-17 14:57:14,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 02:57:14" (2/3) ... [2023-11-17 14:57:14,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@629093e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 02:57:14, skipping insertion in model container [2023-11-17 14:57:14,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 02:57:14" (3/3) ... [2023-11-17 14:57:14,903 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longer.i [2023-11-17 14:57:14,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 14:57:14,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-17 14:57:14,919 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 14:57:15,047 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 14:57:15,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 273 transitions, 560 flow [2023-11-17 14:57:15,174 INFO L124 PetriNetUnfolderBase]: 15/271 cut-off events. [2023-11-17 14:57:15,174 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 14:57:15,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 271 events. 15/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 377 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-11-17 14:57:15,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 273 transitions, 560 flow [2023-11-17 14:57:15,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 261 transitions, 531 flow [2023-11-17 14:57:15,208 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 14:57:15,222 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 261 transitions, 531 flow [2023-11-17 14:57:15,226 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 261 transitions, 531 flow [2023-11-17 14:57:15,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 261 transitions, 531 flow [2023-11-17 14:57:15,293 INFO L124 PetriNetUnfolderBase]: 15/261 cut-off events. [2023-11-17 14:57:15,293 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 14:57:15,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 261 events. 15/261 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 339 event pairs, 0 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 196. Up to 2 conditions per place. [2023-11-17 14:57:15,302 INFO L119 LiptonReduction]: Number of co-enabled transitions 17694 [2023-11-17 14:57:22,353 INFO L134 LiptonReduction]: Checked pairs total: 32926 [2023-11-17 14:57:22,353 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-11-17 14:57:22,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 14:57:22,373 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;@152eef2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 14:57:22,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-17 14:57:22,374 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 14:57:22,374 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-17 14:57:22,375 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 14:57:22,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:22,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-17 14:57:22,376 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 4 more)] === [2023-11-17 14:57:22,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:22,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1090, now seen corresponding path program 1 times [2023-11-17 14:57:22,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:22,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118963013] [2023-11-17 14:57:22,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:22,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:22,478 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 14:57:22,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:22,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118963013] [2023-11-17 14:57:22,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118963013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:22,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:22,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-17 14:57:22,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576436013] [2023-11-17 14:57:22,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:22,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 14:57:22,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:22,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 14:57:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 14:57:22,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 511 [2023-11-17 14:57:22,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 133 flow. Second operand has 2 states, 2 states have (on average 254.5) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 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 14:57:22,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:22,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 511 [2023-11-17 14:57:22,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:22,824 INFO L124 PetriNetUnfolderBase]: 1605/2644 cut-off events. [2023-11-17 14:57:22,825 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-17 14:57:22,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5212 conditions, 2644 events. 1605/2644 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 11720 event pairs, 1293 based on Foata normal form. 34/2250 useless extension candidates. Maximal degree in co-relation 5054. Up to 2493 conditions per place. [2023-11-17 14:57:22,843 INFO L140 encePairwiseOnDemand]: 508/511 looper letters, 54 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-11-17 14:57:22,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 59 transitions, 235 flow [2023-11-17 14:57:22,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 14:57:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 14:57:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 565 transitions. [2023-11-17 14:57:22,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528375733855186 [2023-11-17 14:57:22,860 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 565 transitions. [2023-11-17 14:57:22,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 565 transitions. [2023-11-17 14:57:22,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:22,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 565 transitions. [2023-11-17 14:57:22,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 282.5) internal successors, (565), 2 states have internal predecessors, (565), 0 states have call successors, (0), 0 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 14:57:22,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 511.0) internal successors, (1533), 3 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 14:57:22,875 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 511.0) internal successors, (1533), 3 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 14:57:22,876 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 133 flow. Second operand 2 states and 565 transitions. [2023-11-17 14:57:22,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 59 transitions, 235 flow [2023-11-17 14:57:22,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 230 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 14:57:22,883 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 122 flow [2023-11-17 14:57:22,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-11-17 14:57:22,888 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-17 14:57:22,888 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 122 flow [2023-11-17 14:57:22,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 254.5) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 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 14:57:22,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:22,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:57:22,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 14:57:22,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:22,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:22,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2080006196, now seen corresponding path program 1 times [2023-11-17 14:57:22,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:22,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130034244] [2023-11-17 14:57:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:22,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:23,159 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 14:57:23,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:23,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130034244] [2023-11-17 14:57:23,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130034244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:23,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:23,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 14:57:23,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764545448] [2023-11-17 14:57:23,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:23,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 14:57:23,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:23,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 14:57:23,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 14:57:23,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 511 [2023-11-17 14:57:23,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 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 14:57:23,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:23,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 511 [2023-11-17 14:57:23,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:23,443 INFO L124 PetriNetUnfolderBase]: 1569/2616 cut-off events. [2023-11-17 14:57:23,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 14:57:23,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5132 conditions, 2616 events. 1569/2616 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 11840 event pairs, 1245 based on Foata normal form. 0/2222 useless extension candidates. Maximal degree in co-relation 5129. Up to 2339 conditions per place. [2023-11-17 14:57:23,458 INFO L140 encePairwiseOnDemand]: 507/511 looper letters, 70 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2023-11-17 14:57:23,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 308 flow [2023-11-17 14:57:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 14:57:23,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 14:57:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 818 transitions. [2023-11-17 14:57:23,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335942596216569 [2023-11-17 14:57:23,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 818 transitions. [2023-11-17 14:57:23,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 818 transitions. [2023-11-17 14:57:23,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:23,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 818 transitions. [2023-11-17 14:57:23,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.6666666666667) internal successors, (818), 3 states have internal predecessors, (818), 0 states have call successors, (0), 0 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 14:57:23,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 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 14:57:23,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 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 14:57:23,471 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 122 flow. Second operand 3 states and 818 transitions. [2023-11-17 14:57:23,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 308 flow [2023-11-17 14:57:23,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 14:57:23,485 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 126 flow [2023-11-17 14:57:23,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-11-17 14:57:23,487 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2023-11-17 14:57:23,487 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 126 flow [2023-11-17 14:57:23,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 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 14:57:23,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:23,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:57:23,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 14:57:23,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:23,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash -625924937, now seen corresponding path program 1 times [2023-11-17 14:57:23,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:23,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137600656] [2023-11-17 14:57:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:23,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:23,716 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 14:57:23,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:23,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137600656] [2023-11-17 14:57:23,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137600656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:23,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:23,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 14:57:23,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459170139] [2023-11-17 14:57:23,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:23,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 14:57:23,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 14:57:23,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 14:57:23,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 511 [2023-11-17 14:57:23,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 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 14:57:23,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:23,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 511 [2023-11-17 14:57:23,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:24,014 INFO L124 PetriNetUnfolderBase]: 1303/2224 cut-off events. [2023-11-17 14:57:24,015 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-17 14:57:24,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4483 conditions, 2224 events. 1303/2224 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8742 event pairs, 675 based on Foata normal form. 56/1888 useless extension candidates. Maximal degree in co-relation 4479. Up to 1239 conditions per place. [2023-11-17 14:57:24,026 INFO L140 encePairwiseOnDemand]: 507/511 looper letters, 75 selfloop transitions, 3 changer transitions 1/83 dead transitions. [2023-11-17 14:57:24,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 337 flow [2023-11-17 14:57:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 14:57:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 14:57:24,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 824 transitions. [2023-11-17 14:57:24,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375081539465101 [2023-11-17 14:57:24,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 824 transitions. [2023-11-17 14:57:24,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 824 transitions. [2023-11-17 14:57:24,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:24,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 824 transitions. [2023-11-17 14:57:24,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.6666666666667) internal successors, (824), 3 states have internal predecessors, (824), 0 states have call successors, (0), 0 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 14:57:24,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 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 14:57:24,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 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 14:57:24,035 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 126 flow. Second operand 3 states and 824 transitions. [2023-11-17 14:57:24,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 337 flow [2023-11-17 14:57:24,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 14:57:24,039 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 135 flow [2023-11-17 14:57:24,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-11-17 14:57:24,041 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2023-11-17 14:57:24,041 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 135 flow [2023-11-17 14:57:24,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.33333333333334) internal successors, (757), 3 states have internal predecessors, (757), 0 states have call successors, (0), 0 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 14:57:24,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:24,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:57:24,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 14:57:24,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:24,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1725700690, now seen corresponding path program 1 times [2023-11-17 14:57:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:24,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278880455] [2023-11-17 14:57:24,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:24,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:24,503 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 14:57:24,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:24,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278880455] [2023-11-17 14:57:24,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278880455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:24,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:24,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 14:57:24,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406820210] [2023-11-17 14:57:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:24,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 14:57:24,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:24,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 14:57:24,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 14:57:24,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 511 [2023-11-17 14:57:24,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 14:57:24,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:24,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 511 [2023-11-17 14:57:24,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:24,882 INFO L124 PetriNetUnfolderBase]: 1363/2285 cut-off events. [2023-11-17 14:57:24,882 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-17 14:57:24,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4665 conditions, 2285 events. 1363/2285 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8755 event pairs, 1045 based on Foata normal form. 0/1886 useless extension candidates. Maximal degree in co-relation 4660. Up to 2179 conditions per place. [2023-11-17 14:57:24,894 INFO L140 encePairwiseOnDemand]: 505/511 looper letters, 58 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-17 14:57:24,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 287 flow [2023-11-17 14:57:24,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 14:57:24,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 14:57:24,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1026 transitions. [2023-11-17 14:57:24,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015655577299413 [2023-11-17 14:57:24,897 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1026 transitions. [2023-11-17 14:57:24,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1026 transitions. [2023-11-17 14:57:24,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:24,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1026 transitions. [2023-11-17 14:57:24,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.2) internal successors, (1026), 5 states have internal predecessors, (1026), 0 states have call successors, (0), 0 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 14:57:24,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 511.0) internal successors, (3066), 6 states have internal predecessors, (3066), 0 states have call successors, (0), 0 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 14:57:24,906 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 511.0) internal successors, (3066), 6 states have internal predecessors, (3066), 0 states have call successors, (0), 0 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 14:57:24,906 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 135 flow. Second operand 5 states and 1026 transitions. [2023-11-17 14:57:24,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 287 flow [2023-11-17 14:57:24,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 14:57:24,911 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 177 flow [2023-11-17 14:57:24,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2023-11-17 14:57:24,912 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2023-11-17 14:57:24,912 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 177 flow [2023-11-17 14:57:24,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 0 states have call successors, (0), 0 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 14:57:24,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:24,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:57:24,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 14:57:24,914 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:24,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:24,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1188649210, now seen corresponding path program 1 times [2023-11-17 14:57:24,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:24,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955487725] [2023-11-17 14:57:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:24,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:25,185 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 14:57:25,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:25,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955487725] [2023-11-17 14:57:25,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955487725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:25,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:25,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 14:57:25,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988070834] [2023-11-17 14:57:25,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:25,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 14:57:25,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 14:57:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 14:57:25,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 511 [2023-11-17 14:57:25,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 0 states have call successors, (0), 0 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 14:57:25,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:25,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 511 [2023-11-17 14:57:25,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:25,497 INFO L124 PetriNetUnfolderBase]: 1459/2447 cut-off events. [2023-11-17 14:57:25,497 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-17 14:57:25,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5111 conditions, 2447 events. 1459/2447 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9566 event pairs, 331 based on Foata normal form. 11/2046 useless extension candidates. Maximal degree in co-relation 5103. Up to 2117 conditions per place. [2023-11-17 14:57:25,511 INFO L140 encePairwiseOnDemand]: 505/511 looper letters, 77 selfloop transitions, 10 changer transitions 0/92 dead transitions. [2023-11-17 14:57:25,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 415 flow [2023-11-17 14:57:25,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 14:57:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 14:57:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1020 transitions. [2023-11-17 14:57:25,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39921722113502933 [2023-11-17 14:57:25,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1020 transitions. [2023-11-17 14:57:25,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1020 transitions. [2023-11-17 14:57:25,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:25,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1020 transitions. [2023-11-17 14:57:25,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.0) internal successors, (1020), 5 states have internal predecessors, (1020), 0 states have call successors, (0), 0 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 14:57:25,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 511.0) internal successors, (3066), 6 states have internal predecessors, (3066), 0 states have call successors, (0), 0 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 14:57:25,523 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 511.0) internal successors, (3066), 6 states have internal predecessors, (3066), 0 states have call successors, (0), 0 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 14:57:25,523 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 177 flow. Second operand 5 states and 1020 transitions. [2023-11-17 14:57:25,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 415 flow [2023-11-17 14:57:25,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 92 transitions, 415 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 14:57:25,526 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 214 flow [2023-11-17 14:57:25,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2023-11-17 14:57:25,527 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2023-11-17 14:57:25,527 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 214 flow [2023-11-17 14:57:25,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 0 states have call successors, (0), 0 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 14:57:25,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:25,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:57:25,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 14:57:25,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:25,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:25,529 INFO L85 PathProgramCache]: Analyzing trace with hash -600368028, now seen corresponding path program 2 times [2023-11-17 14:57:25,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:25,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672240283] [2023-11-17 14:57:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:25,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:25,974 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 14:57:25,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:25,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672240283] [2023-11-17 14:57:25,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672240283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:25,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:25,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 14:57:25,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412782172] [2023-11-17 14:57:25,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:25,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 14:57:25,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:25,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 14:57:25,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 14:57:25,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 511 [2023-11-17 14:57:25,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 190.16666666666666) internal successors, (1141), 6 states have internal predecessors, (1141), 0 states have call successors, (0), 0 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 14:57:25,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:25,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 511 [2023-11-17 14:57:25,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:26,414 INFO L124 PetriNetUnfolderBase]: 1432/2409 cut-off events. [2023-11-17 14:57:26,414 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2023-11-17 14:57:26,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5106 conditions, 2409 events. 1432/2409 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9346 event pairs, 1099 based on Foata normal form. 11/2012 useless extension candidates. Maximal degree in co-relation 5096. Up to 2146 conditions per place. [2023-11-17 14:57:26,428 INFO L140 encePairwiseOnDemand]: 505/511 looper letters, 71 selfloop transitions, 8 changer transitions 0/84 dead transitions. [2023-11-17 14:57:26,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 84 transitions, 406 flow [2023-11-17 14:57:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 14:57:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 14:57:26,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1207 transitions. [2023-11-17 14:57:26,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39367253750815395 [2023-11-17 14:57:26,432 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1207 transitions. [2023-11-17 14:57:26,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1207 transitions. [2023-11-17 14:57:26,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:26,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1207 transitions. [2023-11-17 14:57:26,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.16666666666666) internal successors, (1207), 6 states have internal predecessors, (1207), 0 states have call successors, (0), 0 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 14:57:26,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 511.0) internal successors, (3577), 7 states have internal predecessors, (3577), 0 states have call successors, (0), 0 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 14:57:26,440 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 511.0) internal successors, (3577), 7 states have internal predecessors, (3577), 0 states have call successors, (0), 0 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 14:57:26,440 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 214 flow. Second operand 6 states and 1207 transitions. [2023-11-17 14:57:26,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 84 transitions, 406 flow [2023-11-17 14:57:26,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 84 transitions, 397 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 14:57:26,443 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 213 flow [2023-11-17 14:57:26,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-11-17 14:57:26,444 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2023-11-17 14:57:26,444 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 213 flow [2023-11-17 14:57:26,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.16666666666666) internal successors, (1141), 6 states have internal predecessors, (1141), 0 states have call successors, (0), 0 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 14:57:26,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:26,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:57:26,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 14:57:26,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:26,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:26,446 INFO L85 PathProgramCache]: Analyzing trace with hash -404757533, now seen corresponding path program 1 times [2023-11-17 14:57:26,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:26,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286898724] [2023-11-17 14:57:26,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:26,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:26,999 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 14:57:27,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:27,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286898724] [2023-11-17 14:57:27,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286898724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:27,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:27,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 14:57:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098795390] [2023-11-17 14:57:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:27,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 14:57:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:27,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 14:57:27,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-17 14:57:27,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 511 [2023-11-17 14:57:27,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 213 flow. Second operand has 9 states, 9 states have (on average 180.44444444444446) internal successors, (1624), 9 states have internal predecessors, (1624), 0 states have call successors, (0), 0 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 14:57:27,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:27,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 511 [2023-11-17 14:57:27,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:27,512 INFO L124 PetriNetUnfolderBase]: 1431/2406 cut-off events. [2023-11-17 14:57:27,512 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2023-11-17 14:57:27,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5079 conditions, 2406 events. 1431/2406 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9298 event pairs, 1105 based on Foata normal form. 0/1999 useless extension candidates. Maximal degree in co-relation 5069. Up to 2290 conditions per place. [2023-11-17 14:57:27,523 INFO L140 encePairwiseOnDemand]: 499/511 looper letters, 62 selfloop transitions, 17 changer transitions 1/85 dead transitions. [2023-11-17 14:57:27,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 424 flow [2023-11-17 14:57:27,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 14:57:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 14:57:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1690 transitions. [2023-11-17 14:57:27,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3674711893889976 [2023-11-17 14:57:27,528 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1690 transitions. [2023-11-17 14:57:27,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1690 transitions. [2023-11-17 14:57:27,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:27,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1690 transitions. [2023-11-17 14:57:27,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.77777777777777) internal successors, (1690), 9 states have internal predecessors, (1690), 0 states have call successors, (0), 0 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 14:57:27,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 14:57:27,538 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 14:57:27,538 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 213 flow. Second operand 9 states and 1690 transitions. [2023-11-17 14:57:27,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 424 flow [2023-11-17 14:57:27,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 404 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-17 14:57:27,541 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 290 flow [2023-11-17 14:57:27,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=290, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-11-17 14:57:27,542 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-11-17 14:57:27,542 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 290 flow [2023-11-17 14:57:27,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 180.44444444444446) internal successors, (1624), 9 states have internal predecessors, (1624), 0 states have call successors, (0), 0 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 14:57:27,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:27,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:57:27,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 14:57:27,543 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:27,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:27,544 INFO L85 PathProgramCache]: Analyzing trace with hash -936030837, now seen corresponding path program 1 times [2023-11-17 14:57:27,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:27,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703555645] [2023-11-17 14:57:27,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:27,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:28,235 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 14:57:28,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:28,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703555645] [2023-11-17 14:57:28,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703555645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:28,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:28,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 14:57:28,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155767647] [2023-11-17 14:57:28,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:28,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 14:57:28,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 14:57:28,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-17 14:57:28,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 511 [2023-11-17 14:57:28,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 290 flow. Second operand has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 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 14:57:28,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:28,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 511 [2023-11-17 14:57:28,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:29,016 INFO L124 PetriNetUnfolderBase]: 1612/2701 cut-off events. [2023-11-17 14:57:29,016 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2023-11-17 14:57:29,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5917 conditions, 2701 events. 1612/2701 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11006 event pairs, 423 based on Foata normal form. 0/2228 useless extension candidates. Maximal degree in co-relation 5903. Up to 1915 conditions per place. [2023-11-17 14:57:29,031 INFO L140 encePairwiseOnDemand]: 499/511 looper letters, 98 selfloop transitions, 24 changer transitions 10/137 dead transitions. [2023-11-17 14:57:29,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 137 transitions, 703 flow [2023-11-17 14:57:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 14:57:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 14:57:29,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1688 transitions. [2023-11-17 14:57:29,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3670363122417917 [2023-11-17 14:57:29,036 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1688 transitions. [2023-11-17 14:57:29,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1688 transitions. [2023-11-17 14:57:29,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:29,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1688 transitions. [2023-11-17 14:57:29,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.55555555555554) internal successors, (1688), 9 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 14:57:29,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 14:57:29,047 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 14:57:29,047 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 290 flow. Second operand 9 states and 1688 transitions. [2023-11-17 14:57:29,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 137 transitions, 703 flow [2023-11-17 14:57:29,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 137 transitions, 679 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 14:57:29,051 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 370 flow [2023-11-17 14:57:29,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2023-11-17 14:57:29,052 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 28 predicate places. [2023-11-17 14:57:29,052 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 370 flow [2023-11-17 14:57:29,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 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 14:57:29,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:29,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:57:29,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 14:57:29,053 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:29,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:29,054 INFO L85 PathProgramCache]: Analyzing trace with hash 345507995, now seen corresponding path program 2 times [2023-11-17 14:57:29,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:29,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444336255] [2023-11-17 14:57:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:29,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:29,870 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 14:57:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444336255] [2023-11-17 14:57:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444336255] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:29,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:29,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 14:57:29,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556497471] [2023-11-17 14:57:29,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:29,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 14:57:29,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:29,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 14:57:29,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-17 14:57:29,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 511 [2023-11-17 14:57:29,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 370 flow. Second operand has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 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 14:57:29,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:29,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 511 [2023-11-17 14:57:29,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:30,691 INFO L124 PetriNetUnfolderBase]: 1726/2912 cut-off events. [2023-11-17 14:57:30,692 INFO L125 PetriNetUnfolderBase]: For 558/558 co-relation queries the response was YES. [2023-11-17 14:57:30,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6699 conditions, 2912 events. 1726/2912 cut-off events. For 558/558 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12251 event pairs, 543 based on Foata normal form. 0/2387 useless extension candidates. Maximal degree in co-relation 6682. Up to 1710 conditions per place. [2023-11-17 14:57:30,708 INFO L140 encePairwiseOnDemand]: 499/511 looper letters, 99 selfloop transitions, 28 changer transitions 9/141 dead transitions. [2023-11-17 14:57:30,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 141 transitions, 795 flow [2023-11-17 14:57:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 14:57:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 14:57:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1687 transitions. [2023-11-17 14:57:30,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3668188736681887 [2023-11-17 14:57:30,713 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1687 transitions. [2023-11-17 14:57:30,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1687 transitions. [2023-11-17 14:57:30,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:30,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1687 transitions. [2023-11-17 14:57:30,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.44444444444446) internal successors, (1687), 9 states have internal predecessors, (1687), 0 states have call successors, (0), 0 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 14:57:30,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 14:57:30,723 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 14:57:30,724 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 370 flow. Second operand 9 states and 1687 transitions. [2023-11-17 14:57:30,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 141 transitions, 795 flow [2023-11-17 14:57:30,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 141 transitions, 751 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-17 14:57:30,731 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 450 flow [2023-11-17 14:57:30,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=450, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2023-11-17 14:57:30,732 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 34 predicate places. [2023-11-17 14:57:30,732 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 450 flow [2023-11-17 14:57:30,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 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 14:57:30,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:30,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:57:30,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 14:57:30,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:30,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash 338358155, now seen corresponding path program 3 times [2023-11-17 14:57:30,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:30,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489302024] [2023-11-17 14:57:30,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:30,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:31,248 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 14:57:31,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:31,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489302024] [2023-11-17 14:57:31,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489302024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:31,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:31,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 14:57:31,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132258063] [2023-11-17 14:57:31,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:31,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 14:57:31,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:31,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 14:57:31,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-17 14:57:31,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 511 [2023-11-17 14:57:31,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 450 flow. Second operand has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 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 14:57:31,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:31,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 511 [2023-11-17 14:57:31,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:32,043 INFO L124 PetriNetUnfolderBase]: 1742/2929 cut-off events. [2023-11-17 14:57:32,044 INFO L125 PetriNetUnfolderBase]: For 766/766 co-relation queries the response was YES. [2023-11-17 14:57:32,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6952 conditions, 2929 events. 1742/2929 cut-off events. For 766/766 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 12309 event pairs, 523 based on Foata normal form. 0/2400 useless extension candidates. Maximal degree in co-relation 6932. Up to 1710 conditions per place. [2023-11-17 14:57:32,062 INFO L140 encePairwiseOnDemand]: 499/511 looper letters, 98 selfloop transitions, 31 changer transitions 8/142 dead transitions. [2023-11-17 14:57:32,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 142 transitions, 859 flow [2023-11-17 14:57:32,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 14:57:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 14:57:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1685 transitions. [2023-11-17 14:57:32,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663839965209828 [2023-11-17 14:57:32,067 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1685 transitions. [2023-11-17 14:57:32,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1685 transitions. [2023-11-17 14:57:32,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:32,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1685 transitions. [2023-11-17 14:57:32,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.22222222222223) internal successors, (1685), 9 states have internal predecessors, (1685), 0 states have call successors, (0), 0 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 14:57:32,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 14:57:32,076 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 14:57:32,076 INFO L175 Difference]: Start difference. First operand has 93 places, 84 transitions, 450 flow. Second operand 9 states and 1685 transitions. [2023-11-17 14:57:32,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 142 transitions, 859 flow [2023-11-17 14:57:32,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 142 transitions, 825 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-17 14:57:32,085 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 495 flow [2023-11-17 14:57:32,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=495, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2023-11-17 14:57:32,086 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 38 predicate places. [2023-11-17 14:57:32,086 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 495 flow [2023-11-17 14:57:32,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 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 14:57:32,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:32,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 14:57:32,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 14:57:32,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:32,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash 337406765, now seen corresponding path program 4 times [2023-11-17 14:57:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:32,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496629871] [2023-11-17 14:57:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:32,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:32,582 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 14:57:32,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:32,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496629871] [2023-11-17 14:57:32,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496629871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:32,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:32,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 14:57:32,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278823101] [2023-11-17 14:57:32,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:32,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 14:57:32,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 14:57:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-17 14:57:32,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 511 [2023-11-17 14:57:32,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 495 flow. Second operand has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 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 14:57:32,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:32,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 511 [2023-11-17 14:57:32,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:33,240 INFO L124 PetriNetUnfolderBase]: 1726/2901 cut-off events. [2023-11-17 14:57:33,241 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2023-11-17 14:57:33,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6983 conditions, 2901 events. 1726/2901 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12130 event pairs, 519 based on Foata normal form. 11/2398 useless extension candidates. Maximal degree in co-relation 6962. Up to 1710 conditions per place. [2023-11-17 14:57:33,260 INFO L140 encePairwiseOnDemand]: 500/511 looper letters, 96 selfloop transitions, 30 changer transitions 10/140 dead transitions. [2023-11-17 14:57:33,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 140 transitions, 888 flow [2023-11-17 14:57:33,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 14:57:33,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 14:57:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1683 transitions. [2023-11-17 14:57:33,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3659491193737769 [2023-11-17 14:57:33,265 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1683 transitions. [2023-11-17 14:57:33,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1683 transitions. [2023-11-17 14:57:33,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:33,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1683 transitions. [2023-11-17 14:57:33,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 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 14:57:33,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 14:57:33,275 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 511.0) internal successors, (5110), 10 states have internal predecessors, (5110), 0 states have call successors, (0), 0 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 14:57:33,275 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 495 flow. Second operand 9 states and 1683 transitions. [2023-11-17 14:57:33,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 140 transitions, 888 flow [2023-11-17 14:57:33,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 140 transitions, 834 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-17 14:57:33,284 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 493 flow [2023-11-17 14:57:33,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=493, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2023-11-17 14:57:33,285 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 37 predicate places. [2023-11-17 14:57:33,285 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 493 flow [2023-11-17 14:57:33,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.4) internal successors, (1754), 10 states have internal predecessors, (1754), 0 states have call successors, (0), 0 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 14:57:33,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:33,286 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] [2023-11-17 14:57:33,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 14:57:33,286 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:33,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:33,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1534944864, now seen corresponding path program 1 times [2023-11-17 14:57:33,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387487333] [2023-11-17 14:57:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:33,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:33,394 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 14:57:33,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:33,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387487333] [2023-11-17 14:57:33,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387487333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:33,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:33,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 14:57:33,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715128133] [2023-11-17 14:57:33,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:33,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 14:57:33,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:33,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 14:57:33,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 14:57:33,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 511 [2023-11-17 14:57:33,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 493 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 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 14:57:33,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:33,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 511 [2023-11-17 14:57:33,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:33,579 INFO L124 PetriNetUnfolderBase]: 790/1469 cut-off events. [2023-11-17 14:57:33,580 INFO L125 PetriNetUnfolderBase]: For 537/537 co-relation queries the response was YES. [2023-11-17 14:57:33,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 1469 events. 790/1469 cut-off events. For 537/537 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6009 event pairs, 172 based on Foata normal form. 4/1319 useless extension candidates. Maximal degree in co-relation 3739. Up to 1128 conditions per place. [2023-11-17 14:57:33,587 INFO L140 encePairwiseOnDemand]: 503/511 looper letters, 74 selfloop transitions, 11 changer transitions 1/94 dead transitions. [2023-11-17 14:57:33,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 700 flow [2023-11-17 14:57:33,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 14:57:33,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 14:57:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 805 transitions. [2023-11-17 14:57:33,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251141552511416 [2023-11-17 14:57:33,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 805 transitions. [2023-11-17 14:57:33,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 805 transitions. [2023-11-17 14:57:33,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:33,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 805 transitions. [2023-11-17 14:57:33,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 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 14:57:33,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 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 14:57:33,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 511.0) internal successors, (2044), 4 states have internal predecessors, (2044), 0 states have call successors, (0), 0 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 14:57:33,594 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 493 flow. Second operand 3 states and 805 transitions. [2023-11-17 14:57:33,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 700 flow [2023-11-17 14:57:33,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 94 transitions, 640 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 14:57:33,601 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 455 flow [2023-11-17 14:57:33,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=455, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-11-17 14:57:33,603 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 31 predicate places. [2023-11-17 14:57:33,603 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 455 flow [2023-11-17 14:57:33,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 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 14:57:33,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:33,603 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] [2023-11-17 14:57:33,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 14:57:33,604 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:33,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash -425536316, now seen corresponding path program 1 times [2023-11-17 14:57:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118423326] [2023-11-17 14:57:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:34,539 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 14:57:34,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:34,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118423326] [2023-11-17 14:57:34,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118423326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:34,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:34,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 14:57:34,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704684876] [2023-11-17 14:57:34,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:34,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 14:57:34,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:34,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 14:57:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-17 14:57:34,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 511 [2023-11-17 14:57:34,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 455 flow. Second operand has 14 states, 14 states have (on average 172.42857142857142) internal successors, (2414), 14 states have internal predecessors, (2414), 0 states have call successors, (0), 0 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 14:57:34,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:34,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 511 [2023-11-17 14:57:34,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:35,199 INFO L124 PetriNetUnfolderBase]: 853/1573 cut-off events. [2023-11-17 14:57:35,199 INFO L125 PetriNetUnfolderBase]: For 628/628 co-relation queries the response was YES. [2023-11-17 14:57:35,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4067 conditions, 1573 events. 853/1573 cut-off events. For 628/628 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6371 event pairs, 471 based on Foata normal form. 0/1481 useless extension candidates. Maximal degree in co-relation 4046. Up to 997 conditions per place. [2023-11-17 14:57:35,207 INFO L140 encePairwiseOnDemand]: 494/511 looper letters, 102 selfloop transitions, 34 changer transitions 17/157 dead transitions. [2023-11-17 14:57:35,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 157 transitions, 974 flow [2023-11-17 14:57:35,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 14:57:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 14:57:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2517 transitions. [2023-11-17 14:57:35,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35183114341627064 [2023-11-17 14:57:35,214 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2517 transitions. [2023-11-17 14:57:35,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2517 transitions. [2023-11-17 14:57:35,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:35,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2517 transitions. [2023-11-17 14:57:35,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 179.78571428571428) internal successors, (2517), 14 states have internal predecessors, (2517), 0 states have call successors, (0), 0 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 14:57:35,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 511.0) internal successors, (7665), 15 states have internal predecessors, (7665), 0 states have call successors, (0), 0 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 14:57:35,233 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 511.0) internal successors, (7665), 15 states have internal predecessors, (7665), 0 states have call successors, (0), 0 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 14:57:35,233 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 455 flow. Second operand 14 states and 2517 transitions. [2023-11-17 14:57:35,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 157 transitions, 974 flow [2023-11-17 14:57:35,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 157 transitions, 954 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 14:57:35,240 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 590 flow [2023-11-17 14:57:35,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=590, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2023-11-17 14:57:35,241 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 48 predicate places. [2023-11-17 14:57:35,242 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 590 flow [2023-11-17 14:57:35,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 172.42857142857142) internal successors, (2414), 14 states have internal predecessors, (2414), 0 states have call successors, (0), 0 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 14:57:35,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:35,242 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] [2023-11-17 14:57:35,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 14:57:35,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:35,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1296350894, now seen corresponding path program 2 times [2023-11-17 14:57:35,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:35,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497268222] [2023-11-17 14:57:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:35,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:36,381 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 14:57:36,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:36,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497268222] [2023-11-17 14:57:36,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497268222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:36,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:36,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-17 14:57:36,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696038660] [2023-11-17 14:57:36,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:36,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 14:57:36,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 14:57:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-11-17 14:57:36,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 511 [2023-11-17 14:57:36,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 590 flow. Second operand has 17 states, 17 states have (on average 175.0) internal successors, (2975), 17 states have internal predecessors, (2975), 0 states have call successors, (0), 0 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 14:57:36,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:36,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 511 [2023-11-17 14:57:36,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:37,273 INFO L124 PetriNetUnfolderBase]: 1231/2270 cut-off events. [2023-11-17 14:57:37,273 INFO L125 PetriNetUnfolderBase]: For 686/686 co-relation queries the response was YES. [2023-11-17 14:57:37,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5876 conditions, 2270 events. 1231/2270 cut-off events. For 686/686 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10189 event pairs, 305 based on Foata normal form. 0/2161 useless extension candidates. Maximal degree in co-relation 5849. Up to 647 conditions per place. [2023-11-17 14:57:37,282 INFO L140 encePairwiseOnDemand]: 491/511 looper letters, 141 selfloop transitions, 44 changer transitions 10/199 dead transitions. [2023-11-17 14:57:37,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 199 transitions, 1264 flow [2023-11-17 14:57:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 14:57:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 14:57:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2934 transitions. [2023-11-17 14:57:37,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35885518590998045 [2023-11-17 14:57:37,292 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2934 transitions. [2023-11-17 14:57:37,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2934 transitions. [2023-11-17 14:57:37,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:37,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2934 transitions. [2023-11-17 14:57:37,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 183.375) internal successors, (2934), 16 states have internal predecessors, (2934), 0 states have call successors, (0), 0 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 14:57:37,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 511.0) internal successors, (8687), 17 states have internal predecessors, (8687), 0 states have call successors, (0), 0 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 14:57:37,311 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 511.0) internal successors, (8687), 17 states have internal predecessors, (8687), 0 states have call successors, (0), 0 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 14:57:37,311 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 590 flow. Second operand 16 states and 2934 transitions. [2023-11-17 14:57:37,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 199 transitions, 1264 flow [2023-11-17 14:57:37,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 199 transitions, 1222 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-17 14:57:37,319 INFO L231 Difference]: Finished difference. Result has 120 places, 107 transitions, 732 flow [2023-11-17 14:57:37,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=732, PETRI_PLACES=120, PETRI_TRANSITIONS=107} [2023-11-17 14:57:37,319 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 61 predicate places. [2023-11-17 14:57:37,319 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 107 transitions, 732 flow [2023-11-17 14:57:37,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 175.0) internal successors, (2975), 17 states have internal predecessors, (2975), 0 states have call successors, (0), 0 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 14:57:37,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:37,320 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] [2023-11-17 14:57:37,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 14:57:37,321 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:37,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:37,321 INFO L85 PathProgramCache]: Analyzing trace with hash -594293694, now seen corresponding path program 1 times [2023-11-17 14:57:37,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:37,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126662440] [2023-11-17 14:57:37,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:37,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:38,304 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 14:57:38,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:38,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126662440] [2023-11-17 14:57:38,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126662440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:38,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:38,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 14:57:38,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41710209] [2023-11-17 14:57:38,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:38,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 14:57:38,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 14:57:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-17 14:57:38,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 511 [2023-11-17 14:57:38,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 107 transitions, 732 flow. Second operand has 14 states, 14 states have (on average 172.5) internal successors, (2415), 14 states have internal predecessors, (2415), 0 states have call successors, (0), 0 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 14:57:38,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:38,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 511 [2023-11-17 14:57:38,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:39,223 INFO L124 PetriNetUnfolderBase]: 1436/2644 cut-off events. [2023-11-17 14:57:39,223 INFO L125 PetriNetUnfolderBase]: For 1481/1481 co-relation queries the response was YES. [2023-11-17 14:57:39,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7497 conditions, 2644 events. 1436/2644 cut-off events. For 1481/1481 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12555 event pairs, 420 based on Foata normal form. 7/2534 useless extension candidates. Maximal degree in co-relation 7465. Up to 1678 conditions per place. [2023-11-17 14:57:39,233 INFO L140 encePairwiseOnDemand]: 493/511 looper letters, 119 selfloop transitions, 52 changer transitions 17/192 dead transitions. [2023-11-17 14:57:39,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 192 transitions, 1439 flow [2023-11-17 14:57:39,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 14:57:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 14:57:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3040 transitions. [2023-11-17 14:57:39,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34994819845746516 [2023-11-17 14:57:39,241 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3040 transitions. [2023-11-17 14:57:39,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3040 transitions. [2023-11-17 14:57:39,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:39,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3040 transitions. [2023-11-17 14:57:39,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 178.8235294117647) internal successors, (3040), 17 states have internal predecessors, (3040), 0 states have call successors, (0), 0 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 14:57:39,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 511.0) internal successors, (9198), 18 states have internal predecessors, (9198), 0 states have call successors, (0), 0 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 14:57:39,258 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 511.0) internal successors, (9198), 18 states have internal predecessors, (9198), 0 states have call successors, (0), 0 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 14:57:39,258 INFO L175 Difference]: Start difference. First operand has 120 places, 107 transitions, 732 flow. Second operand 17 states and 3040 transitions. [2023-11-17 14:57:39,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 192 transitions, 1439 flow [2023-11-17 14:57:39,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 192 transitions, 1372 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-17 14:57:39,272 INFO L231 Difference]: Finished difference. Result has 137 places, 125 transitions, 1034 flow [2023-11-17 14:57:39,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1034, PETRI_PLACES=137, PETRI_TRANSITIONS=125} [2023-11-17 14:57:39,273 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 78 predicate places. [2023-11-17 14:57:39,274 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 125 transitions, 1034 flow [2023-11-17 14:57:39,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 172.5) internal successors, (2415), 14 states have internal predecessors, (2415), 0 states have call successors, (0), 0 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 14:57:39,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:39,274 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] [2023-11-17 14:57:39,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 14:57:39,275 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:39,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:39,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1745541554, now seen corresponding path program 2 times [2023-11-17 14:57:39,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:39,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563150950] [2023-11-17 14:57:39,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:39,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:40,173 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 14:57:40,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:40,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563150950] [2023-11-17 14:57:40,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563150950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:40,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:40,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-17 14:57:40,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692691573] [2023-11-17 14:57:40,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:40,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 14:57:40,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:40,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 14:57:40,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-17 14:57:40,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 511 [2023-11-17 14:57:40,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 125 transitions, 1034 flow. Second operand has 14 states, 14 states have (on average 171.5) internal successors, (2401), 14 states have internal predecessors, (2401), 0 states have call successors, (0), 0 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 14:57:40,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:40,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 511 [2023-11-17 14:57:40,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:40,959 INFO L124 PetriNetUnfolderBase]: 1222/2244 cut-off events. [2023-11-17 14:57:40,959 INFO L125 PetriNetUnfolderBase]: For 2234/2234 co-relation queries the response was YES. [2023-11-17 14:57:40,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6959 conditions, 2244 events. 1222/2244 cut-off events. For 2234/2234 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10049 event pairs, 372 based on Foata normal form. 7/2149 useless extension candidates. Maximal degree in co-relation 6918. Up to 950 conditions per place. [2023-11-17 14:57:40,976 INFO L140 encePairwiseOnDemand]: 495/511 looper letters, 108 selfloop transitions, 54 changer transitions 16/182 dead transitions. [2023-11-17 14:57:40,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 182 transitions, 1534 flow [2023-11-17 14:57:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 14:57:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 14:57:40,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2324 transitions. [2023-11-17 14:57:40,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3498419388830348 [2023-11-17 14:57:40,980 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2324 transitions. [2023-11-17 14:57:40,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2324 transitions. [2023-11-17 14:57:40,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:40,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2324 transitions. [2023-11-17 14:57:40,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 178.76923076923077) internal successors, (2324), 13 states have internal predecessors, (2324), 0 states have call successors, (0), 0 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 14:57:40,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 511.0) internal successors, (7154), 14 states have internal predecessors, (7154), 0 states have call successors, (0), 0 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 14:57:40,992 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 511.0) internal successors, (7154), 14 states have internal predecessors, (7154), 0 states have call successors, (0), 0 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 14:57:40,992 INFO L175 Difference]: Start difference. First operand has 137 places, 125 transitions, 1034 flow. Second operand 13 states and 2324 transitions. [2023-11-17 14:57:40,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 182 transitions, 1534 flow [2023-11-17 14:57:41,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 182 transitions, 1458 flow, removed 10 selfloop flow, removed 11 redundant places. [2023-11-17 14:57:41,010 INFO L231 Difference]: Finished difference. Result has 139 places, 123 transitions, 1095 flow [2023-11-17 14:57:41,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1095, PETRI_PLACES=139, PETRI_TRANSITIONS=123} [2023-11-17 14:57:41,010 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 80 predicate places. [2023-11-17 14:57:41,011 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 123 transitions, 1095 flow [2023-11-17 14:57:41,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 171.5) internal successors, (2401), 14 states have internal predecessors, (2401), 0 states have call successors, (0), 0 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 14:57:41,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:41,011 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] [2023-11-17 14:57:41,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 14:57:41,012 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:41,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:41,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1742798438, now seen corresponding path program 1 times [2023-11-17 14:57:41,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:41,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576422628] [2023-11-17 14:57:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:41,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:42,525 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 14:57:42,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576422628] [2023-11-17 14:57:42,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576422628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:42,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:42,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-17 14:57:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343118834] [2023-11-17 14:57:42,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:42,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 14:57:42,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 14:57:42,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-17 14:57:42,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 511 [2023-11-17 14:57:42,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 123 transitions, 1095 flow. Second operand has 16 states, 16 states have (on average 175.1875) internal successors, (2803), 16 states have internal predecessors, (2803), 0 states have call successors, (0), 0 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 14:57:42,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:42,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 511 [2023-11-17 14:57:42,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:43,332 INFO L124 PetriNetUnfolderBase]: 1369/2515 cut-off events. [2023-11-17 14:57:43,332 INFO L125 PetriNetUnfolderBase]: For 3044/3044 co-relation queries the response was YES. [2023-11-17 14:57:43,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7895 conditions, 2515 events. 1369/2515 cut-off events. For 3044/3044 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11251 event pairs, 249 based on Foata normal form. 8/2406 useless extension candidates. Maximal degree in co-relation 7856. Up to 663 conditions per place. [2023-11-17 14:57:43,352 INFO L140 encePairwiseOnDemand]: 495/511 looper letters, 134 selfloop transitions, 55 changer transitions 17/210 dead transitions. [2023-11-17 14:57:43,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 210 transitions, 1741 flow [2023-11-17 14:57:43,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 14:57:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 14:57:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2752 transitions. [2023-11-17 14:57:43,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3590345727332029 [2023-11-17 14:57:43,357 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2752 transitions. [2023-11-17 14:57:43,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2752 transitions. [2023-11-17 14:57:43,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:43,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2752 transitions. [2023-11-17 14:57:43,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 183.46666666666667) internal successors, (2752), 15 states have internal predecessors, (2752), 0 states have call successors, (0), 0 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 14:57:43,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 511.0) internal successors, (8176), 16 states have internal predecessors, (8176), 0 states have call successors, (0), 0 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 14:57:43,370 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 511.0) internal successors, (8176), 16 states have internal predecessors, (8176), 0 states have call successors, (0), 0 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 14:57:43,370 INFO L175 Difference]: Start difference. First operand has 139 places, 123 transitions, 1095 flow. Second operand 15 states and 2752 transitions. [2023-11-17 14:57:43,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 210 transitions, 1741 flow [2023-11-17 14:57:43,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 210 transitions, 1640 flow, removed 2 selfloop flow, removed 13 redundant places. [2023-11-17 14:57:43,391 INFO L231 Difference]: Finished difference. Result has 143 places, 127 transitions, 1158 flow [2023-11-17 14:57:43,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1158, PETRI_PLACES=143, PETRI_TRANSITIONS=127} [2023-11-17 14:57:43,391 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 84 predicate places. [2023-11-17 14:57:43,391 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 127 transitions, 1158 flow [2023-11-17 14:57:43,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 175.1875) internal successors, (2803), 16 states have internal predecessors, (2803), 0 states have call successors, (0), 0 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 14:57:43,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:43,392 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] [2023-11-17 14:57:43,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 14:57:43,392 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:43,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:43,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1646156604, now seen corresponding path program 1 times [2023-11-17 14:57:43,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:43,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261686139] [2023-11-17 14:57:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:43,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:45,645 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 14:57:45,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:45,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261686139] [2023-11-17 14:57:45,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261686139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:45,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:45,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:57:45,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612287022] [2023-11-17 14:57:45,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:45,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:57:45,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:45,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:57:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:57:45,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:57:45,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 127 transitions, 1158 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:57:45,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:45,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:57:45,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:47,117 INFO L124 PetriNetUnfolderBase]: 1583/2929 cut-off events. [2023-11-17 14:57:47,117 INFO L125 PetriNetUnfolderBase]: For 3590/3590 co-relation queries the response was YES. [2023-11-17 14:57:47,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9200 conditions, 2929 events. 1583/2929 cut-off events. For 3590/3590 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13880 event pairs, 653 based on Foata normal form. 82/2864 useless extension candidates. Maximal degree in co-relation 9160. Up to 2441 conditions per place. [2023-11-17 14:57:47,130 INFO L140 encePairwiseOnDemand]: 486/511 looper letters, 184 selfloop transitions, 43 changer transitions 24/255 dead transitions. [2023-11-17 14:57:47,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 255 transitions, 2196 flow [2023-11-17 14:57:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 14:57:47,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 14:57:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4043 transitions. [2023-11-17 14:57:47,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30430528375733856 [2023-11-17 14:57:47,142 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4043 transitions. [2023-11-17 14:57:47,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4043 transitions. [2023-11-17 14:57:47,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:47,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4043 transitions. [2023-11-17 14:57:47,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 155.5) internal successors, (4043), 26 states have internal predecessors, (4043), 0 states have call successors, (0), 0 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 14:57:47,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 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 14:57:47,165 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 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 14:57:47,165 INFO L175 Difference]: Start difference. First operand has 143 places, 127 transitions, 1158 flow. Second operand 26 states and 4043 transitions. [2023-11-17 14:57:47,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 255 transitions, 2196 flow [2023-11-17 14:57:47,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 255 transitions, 2066 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-11-17 14:57:47,190 INFO L231 Difference]: Finished difference. Result has 181 places, 167 transitions, 1578 flow [2023-11-17 14:57:47,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1578, PETRI_PLACES=181, PETRI_TRANSITIONS=167} [2023-11-17 14:57:47,191 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 122 predicate places. [2023-11-17 14:57:47,191 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 167 transitions, 1578 flow [2023-11-17 14:57:47,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:57:47,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:47,192 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] [2023-11-17 14:57:47,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 14:57:47,193 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:47,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 863144552, now seen corresponding path program 2 times [2023-11-17 14:57:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:47,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010564058] [2023-11-17 14:57:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:49,002 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 14:57:49,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:49,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010564058] [2023-11-17 14:57:49,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010564058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:49,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:49,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:57:49,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174855883] [2023-11-17 14:57:49,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:49,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:57:49,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:49,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:57:49,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:57:49,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:57:49,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 167 transitions, 1578 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:57:49,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:49,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:57:49,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:50,638 INFO L124 PetriNetUnfolderBase]: 1853/3465 cut-off events. [2023-11-17 14:57:50,639 INFO L125 PetriNetUnfolderBase]: For 50687/50687 co-relation queries the response was YES. [2023-11-17 14:57:50,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16766 conditions, 3465 events. 1853/3465 cut-off events. For 50687/50687 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17671 event pairs, 613 based on Foata normal form. 132/3414 useless extension candidates. Maximal degree in co-relation 16702. Up to 2770 conditions per place. [2023-11-17 14:57:50,665 INFO L140 encePairwiseOnDemand]: 485/511 looper letters, 221 selfloop transitions, 55 changer transitions 24/304 dead transitions. [2023-11-17 14:57:50,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 304 transitions, 3182 flow [2023-11-17 14:57:50,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 14:57:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 14:57:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3889 transitions. [2023-11-17 14:57:50,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30442270058708415 [2023-11-17 14:57:50,671 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3889 transitions. [2023-11-17 14:57:50,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3889 transitions. [2023-11-17 14:57:50,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:50,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3889 transitions. [2023-11-17 14:57:50,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 155.56) internal successors, (3889), 25 states have internal predecessors, (3889), 0 states have call successors, (0), 0 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 14:57:50,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 511.0) internal successors, (13286), 26 states have internal predecessors, (13286), 0 states have call successors, (0), 0 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 14:57:50,686 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 511.0) internal successors, (13286), 26 states have internal predecessors, (13286), 0 states have call successors, (0), 0 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 14:57:50,686 INFO L175 Difference]: Start difference. First operand has 181 places, 167 transitions, 1578 flow. Second operand 25 states and 3889 transitions. [2023-11-17 14:57:50,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 304 transitions, 3182 flow [2023-11-17 14:57:50,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 304 transitions, 3156 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-11-17 14:57:50,750 INFO L231 Difference]: Finished difference. Result has 227 places, 212 transitions, 2371 flow [2023-11-17 14:57:50,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2371, PETRI_PLACES=227, PETRI_TRANSITIONS=212} [2023-11-17 14:57:50,750 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 168 predicate places. [2023-11-17 14:57:50,750 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 212 transitions, 2371 flow [2023-11-17 14:57:50,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:57:50,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:50,751 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] [2023-11-17 14:57:50,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 14:57:50,752 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:50,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:50,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1945649010, now seen corresponding path program 3 times [2023-11-17 14:57:50,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:50,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490396588] [2023-11-17 14:57:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:50,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:52,786 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 14:57:52,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:52,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490396588] [2023-11-17 14:57:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490396588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:52,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:52,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:57:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649539032] [2023-11-17 14:57:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:52,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:57:52,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:57:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:57:52,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:57:52,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 212 transitions, 2371 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:57:52,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:52,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:57:52,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:54,761 INFO L124 PetriNetUnfolderBase]: 2163/4081 cut-off events. [2023-11-17 14:57:54,761 INFO L125 PetriNetUnfolderBase]: For 163155/163155 co-relation queries the response was YES. [2023-11-17 14:57:54,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25237 conditions, 4081 events. 2163/4081 cut-off events. For 163155/163155 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 22032 event pairs, 745 based on Foata normal form. 136/3990 useless extension candidates. Maximal degree in co-relation 25150. Up to 3224 conditions per place. [2023-11-17 14:57:54,791 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 264 selfloop transitions, 68 changer transitions 25/361 dead transitions. [2023-11-17 14:57:54,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 361 transitions, 4572 flow [2023-11-17 14:57:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 14:57:54,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 14:57:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4051 transitions. [2023-11-17 14:57:54,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30490742134577753 [2023-11-17 14:57:54,803 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4051 transitions. [2023-11-17 14:57:54,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4051 transitions. [2023-11-17 14:57:54,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:54,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4051 transitions. [2023-11-17 14:57:54,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 155.80769230769232) internal successors, (4051), 26 states have internal predecessors, (4051), 0 states have call successors, (0), 0 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 14:57:54,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 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 14:57:54,820 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 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 14:57:54,820 INFO L175 Difference]: Start difference. First operand has 227 places, 212 transitions, 2371 flow. Second operand 26 states and 4051 transitions. [2023-11-17 14:57:54,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 361 transitions, 4572 flow [2023-11-17 14:57:55,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 361 transitions, 4442 flow, removed 65 selfloop flow, removed 0 redundant places. [2023-11-17 14:57:55,030 INFO L231 Difference]: Finished difference. Result has 275 places, 263 transitions, 3331 flow [2023-11-17 14:57:55,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3331, PETRI_PLACES=275, PETRI_TRANSITIONS=263} [2023-11-17 14:57:55,031 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 216 predicate places. [2023-11-17 14:57:55,031 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 263 transitions, 3331 flow [2023-11-17 14:57:55,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:57:55,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:55,032 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] [2023-11-17 14:57:55,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 14:57:55,032 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:55,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:55,032 INFO L85 PathProgramCache]: Analyzing trace with hash -519540198, now seen corresponding path program 4 times [2023-11-17 14:57:55,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:55,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035487142] [2023-11-17 14:57:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:55,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:57:57,078 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 14:57:57,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:57:57,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035487142] [2023-11-17 14:57:57,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035487142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:57:57,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:57:57,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:57:57,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388858486] [2023-11-17 14:57:57,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:57:57,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:57:57,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:57:57,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:57:57,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:57:57,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:57:57,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 263 transitions, 3331 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:57:57,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:57:57,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:57:57,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:57:59,056 INFO L124 PetriNetUnfolderBase]: 2417/4581 cut-off events. [2023-11-17 14:57:59,056 INFO L125 PetriNetUnfolderBase]: For 339406/339406 co-relation queries the response was YES. [2023-11-17 14:57:59,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34278 conditions, 4581 events. 2417/4581 cut-off events. For 339406/339406 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 25739 event pairs, 867 based on Foata normal form. 112/4422 useless extension candidates. Maximal degree in co-relation 34167. Up to 3720 conditions per place. [2023-11-17 14:57:59,090 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 298 selfloop transitions, 72 changer transitions 26/400 dead transitions. [2023-11-17 14:57:59,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 400 transitions, 5908 flow [2023-11-17 14:57:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 14:57:59,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 14:57:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3898 transitions. [2023-11-17 14:57:59,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3051272015655577 [2023-11-17 14:57:59,096 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3898 transitions. [2023-11-17 14:57:59,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3898 transitions. [2023-11-17 14:57:59,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:57:59,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3898 transitions. [2023-11-17 14:57:59,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 155.92) internal successors, (3898), 25 states have internal predecessors, (3898), 0 states have call successors, (0), 0 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 14:57:59,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 511.0) internal successors, (13286), 26 states have internal predecessors, (13286), 0 states have call successors, (0), 0 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 14:57:59,110 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 511.0) internal successors, (13286), 26 states have internal predecessors, (13286), 0 states have call successors, (0), 0 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 14:57:59,110 INFO L175 Difference]: Start difference. First operand has 275 places, 263 transitions, 3331 flow. Second operand 25 states and 3898 transitions. [2023-11-17 14:57:59,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 400 transitions, 5908 flow [2023-11-17 14:57:59,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 400 transitions, 5611 flow, removed 144 selfloop flow, removed 1 redundant places. [2023-11-17 14:57:59,394 INFO L231 Difference]: Finished difference. Result has 318 places, 304 transitions, 4100 flow [2023-11-17 14:57:59,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=3036, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=4100, PETRI_PLACES=318, PETRI_TRANSITIONS=304} [2023-11-17 14:57:59,394 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 259 predicate places. [2023-11-17 14:57:59,394 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 304 transitions, 4100 flow [2023-11-17 14:57:59,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:57:59,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:57:59,395 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] [2023-11-17 14:57:59,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 14:57:59,395 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:57:59,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:57:59,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1986486080, now seen corresponding path program 5 times [2023-11-17 14:57:59,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:57:59,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072650276] [2023-11-17 14:57:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:57:59,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:57:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:02,062 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 14:58:02,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:02,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072650276] [2023-11-17 14:58:02,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072650276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:02,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:02,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-17 14:58:02,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305668555] [2023-11-17 14:58:02,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:02,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 14:58:02,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:02,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 14:58:02,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2023-11-17 14:58:02,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 511 [2023-11-17 14:58:02,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 304 transitions, 4100 flow. Second operand has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 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 14:58:02,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:02,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 511 [2023-11-17 14:58:02,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:04,611 INFO L124 PetriNetUnfolderBase]: 2836/5383 cut-off events. [2023-11-17 14:58:04,611 INFO L125 PetriNetUnfolderBase]: For 618203/618203 co-relation queries the response was YES. [2023-11-17 14:58:04,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45507 conditions, 5383 events. 2836/5383 cut-off events. For 618203/618203 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 31992 event pairs, 1082 based on Foata normal form. 148/5181 useless extension candidates. Maximal degree in co-relation 45375. Up to 3331 conditions per place. [2023-11-17 14:58:04,660 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 340 selfloop transitions, 96 changer transitions 38/478 dead transitions. [2023-11-17 14:58:04,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 478 transitions, 7871 flow [2023-11-17 14:58:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-17 14:58:04,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-17 14:58:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4323 transitions. [2023-11-17 14:58:04,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3021386636846519 [2023-11-17 14:58:04,667 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4323 transitions. [2023-11-17 14:58:04,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4323 transitions. [2023-11-17 14:58:04,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:04,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4323 transitions. [2023-11-17 14:58:04,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 154.39285714285714) internal successors, (4323), 28 states have internal predecessors, (4323), 0 states have call successors, (0), 0 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 14:58:04,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 511.0) internal successors, (14819), 29 states have internal predecessors, (14819), 0 states have call successors, (0), 0 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 14:58:04,686 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 511.0) internal successors, (14819), 29 states have internal predecessors, (14819), 0 states have call successors, (0), 0 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 14:58:04,687 INFO L175 Difference]: Start difference. First operand has 318 places, 304 transitions, 4100 flow. Second operand 28 states and 4323 transitions. [2023-11-17 14:58:04,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 478 transitions, 7871 flow [2023-11-17 14:58:05,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 478 transitions, 7455 flow, removed 189 selfloop flow, removed 3 redundant places. [2023-11-17 14:58:05,342 INFO L231 Difference]: Finished difference. Result has 362 places, 350 transitions, 4998 flow [2023-11-17 14:58:05,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=3684, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4998, PETRI_PLACES=362, PETRI_TRANSITIONS=350} [2023-11-17 14:58:05,343 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 303 predicate places. [2023-11-17 14:58:05,343 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 350 transitions, 4998 flow [2023-11-17 14:58:05,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 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 14:58:05,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:05,344 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] [2023-11-17 14:58:05,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 14:58:05,344 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:05,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:05,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1338148790, now seen corresponding path program 6 times [2023-11-17 14:58:05,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:05,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888599861] [2023-11-17 14:58:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:05,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:16,570 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 14:58:16,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:16,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888599861] [2023-11-17 14:58:16,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888599861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:16,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:16,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-17 14:58:16,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512140518] [2023-11-17 14:58:16,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:16,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 14:58:16,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:16,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 14:58:16,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-11-17 14:58:16,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:58:16,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 350 transitions, 4998 flow. Second operand has 22 states, 22 states have (on average 149.63636363636363) internal successors, (3292), 22 states have internal predecessors, (3292), 0 states have call successors, (0), 0 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 14:58:16,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:16,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:58:16,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:58:35,269 INFO L124 PetriNetUnfolderBase]: 3171/5990 cut-off events. [2023-11-17 14:58:35,270 INFO L125 PetriNetUnfolderBase]: For 807485/807485 co-relation queries the response was YES. [2023-11-17 14:58:35,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57727 conditions, 5990 events. 3171/5990 cut-off events. For 807485/807485 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 36404 event pairs, 1065 based on Foata normal form. 56/5649 useless extension candidates. Maximal degree in co-relation 57574. Up to 3567 conditions per place. [2023-11-17 14:58:35,329 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 315 selfloop transitions, 178 changer transitions 40/537 dead transitions. [2023-11-17 14:58:35,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 537 transitions, 10012 flow [2023-11-17 14:58:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 14:58:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 14:58:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4990 transitions. [2023-11-17 14:58:35,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3051614481409002 [2023-11-17 14:58:35,334 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4990 transitions. [2023-11-17 14:58:35,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4990 transitions. [2023-11-17 14:58:35,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:58:35,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4990 transitions. [2023-11-17 14:58:35,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 155.9375) internal successors, (4990), 32 states have internal predecessors, (4990), 0 states have call successors, (0), 0 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 14:58:35,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 511.0) internal successors, (16863), 33 states have internal predecessors, (16863), 0 states have call successors, (0), 0 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 14:58:35,354 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 511.0) internal successors, (16863), 33 states have internal predecessors, (16863), 0 states have call successors, (0), 0 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 14:58:35,354 INFO L175 Difference]: Start difference. First operand has 362 places, 350 transitions, 4998 flow. Second operand 32 states and 4990 transitions. [2023-11-17 14:58:35,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 537 transitions, 10012 flow [2023-11-17 14:58:36,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 537 transitions, 9405 flow, removed 283 selfloop flow, removed 4 redundant places. [2023-11-17 14:58:36,588 INFO L231 Difference]: Finished difference. Result has 408 places, 405 transitions, 6174 flow [2023-11-17 14:58:36,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=4430, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6174, PETRI_PLACES=408, PETRI_TRANSITIONS=405} [2023-11-17 14:58:36,589 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 349 predicate places. [2023-11-17 14:58:36,590 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 405 transitions, 6174 flow [2023-11-17 14:58:36,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 149.63636363636363) internal successors, (3292), 22 states have internal predecessors, (3292), 0 states have call successors, (0), 0 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 14:58:36,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:58:36,590 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] [2023-11-17 14:58:36,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 14:58:36,591 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:58:36,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:58:36,591 INFO L85 PathProgramCache]: Analyzing trace with hash 610205818, now seen corresponding path program 7 times [2023-11-17 14:58:36,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:58:36,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774645131] [2023-11-17 14:58:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:58:36,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:58:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:58:46,871 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 14:58:46,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:58:46,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774645131] [2023-11-17 14:58:46,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774645131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:58:46,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:58:46,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-17 14:58:46,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620585706] [2023-11-17 14:58:46,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:58:46,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 14:58:46,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:58:46,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 14:58:46,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-11-17 14:58:46,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:58:46,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 405 transitions, 6174 flow. Second operand has 22 states, 22 states have (on average 149.63636363636363) internal successors, (3292), 22 states have internal predecessors, (3292), 0 states have call successors, (0), 0 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 14:58:46,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:58:46,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:58:46,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:59:04,567 INFO L124 PetriNetUnfolderBase]: 3310/6293 cut-off events. [2023-11-17 14:59:04,567 INFO L125 PetriNetUnfolderBase]: For 1037033/1037033 co-relation queries the response was YES. [2023-11-17 14:59:04,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65685 conditions, 6293 events. 3310/6293 cut-off events. For 1037033/1037033 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 38903 event pairs, 1091 based on Foata normal form. 48/5932 useless extension candidates. Maximal degree in co-relation 65512. Up to 3535 conditions per place. [2023-11-17 14:59:04,723 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 319 selfloop transitions, 203 changer transitions 39/565 dead transitions. [2023-11-17 14:59:04,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 565 transitions, 11059 flow [2023-11-17 14:59:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 14:59:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 14:59:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5141 transitions. [2023-11-17 14:59:04,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3048686473344008 [2023-11-17 14:59:04,728 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5141 transitions. [2023-11-17 14:59:04,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5141 transitions. [2023-11-17 14:59:04,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:59:04,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5141 transitions. [2023-11-17 14:59:04,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 155.78787878787878) internal successors, (5141), 33 states have internal predecessors, (5141), 0 states have call successors, (0), 0 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 14:59:04,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 511.0) internal successors, (17374), 34 states have internal predecessors, (17374), 0 states have call successors, (0), 0 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 14:59:04,749 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 511.0) internal successors, (17374), 34 states have internal predecessors, (17374), 0 states have call successors, (0), 0 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 14:59:04,749 INFO L175 Difference]: Start difference. First operand has 408 places, 405 transitions, 6174 flow. Second operand 33 states and 5141 transitions. [2023-11-17 14:59:04,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 565 transitions, 11059 flow [2023-11-17 14:59:06,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 565 transitions, 10319 flow, removed 308 selfloop flow, removed 8 redundant places. [2023-11-17 14:59:06,596 INFO L231 Difference]: Finished difference. Result has 445 places, 430 transitions, 6605 flow [2023-11-17 14:59:06,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=5441, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6605, PETRI_PLACES=445, PETRI_TRANSITIONS=430} [2023-11-17 14:59:06,596 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 386 predicate places. [2023-11-17 14:59:06,597 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 430 transitions, 6605 flow [2023-11-17 14:59:06,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 149.63636363636363) internal successors, (3292), 22 states have internal predecessors, (3292), 0 states have call successors, (0), 0 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 14:59:06,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:59:06,597 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] [2023-11-17 14:59:06,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 14:59:06,597 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:59:06,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:59:06,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1438436600, now seen corresponding path program 8 times [2023-11-17 14:59:06,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:59:06,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053946557] [2023-11-17 14:59:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:59:06,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:59:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:59:09,266 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 14:59:09,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:59:09,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053946557] [2023-11-17 14:59:09,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053946557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:59:09,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:59:09,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:59:09,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561683816] [2023-11-17 14:59:09,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:59:09,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:59:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:59:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:59:09,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:59:09,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:59:09,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 430 transitions, 6605 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:59:09,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:59:09,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:59:09,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:59:13,491 INFO L124 PetriNetUnfolderBase]: 3497/6651 cut-off events. [2023-11-17 14:59:13,491 INFO L125 PetriNetUnfolderBase]: For 1230316/1230316 co-relation queries the response was YES. [2023-11-17 14:59:13,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72683 conditions, 6651 events. 3497/6651 cut-off events. For 1230316/1230316 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 41621 event pairs, 941 based on Foata normal form. 40/6270 useless extension candidates. Maximal degree in co-relation 72500. Up to 3411 conditions per place. [2023-11-17 14:59:13,579 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 306 selfloop transitions, 248 changer transitions 39/597 dead transitions. [2023-11-17 14:59:13,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 597 transitions, 11960 flow [2023-11-17 14:59:13,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 14:59:13,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 14:59:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5146 transitions. [2023-11-17 14:59:13,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30516515448022297 [2023-11-17 14:59:13,585 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5146 transitions. [2023-11-17 14:59:13,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5146 transitions. [2023-11-17 14:59:13,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:59:13,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5146 transitions. [2023-11-17 14:59:13,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 155.93939393939394) internal successors, (5146), 33 states have internal predecessors, (5146), 0 states have call successors, (0), 0 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 14:59:13,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 511.0) internal successors, (17374), 34 states have internal predecessors, (17374), 0 states have call successors, (0), 0 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 14:59:13,604 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 511.0) internal successors, (17374), 34 states have internal predecessors, (17374), 0 states have call successors, (0), 0 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 14:59:13,605 INFO L175 Difference]: Start difference. First operand has 445 places, 430 transitions, 6605 flow. Second operand 33 states and 5146 transitions. [2023-11-17 14:59:13,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 597 transitions, 11960 flow [2023-11-17 14:59:16,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 597 transitions, 11201 flow, removed 277 selfloop flow, removed 16 redundant places. [2023-11-17 14:59:16,347 INFO L231 Difference]: Finished difference. Result has 473 places, 460 transitions, 7445 flow [2023-11-17 14:59:16,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=5930, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7445, PETRI_PLACES=473, PETRI_TRANSITIONS=460} [2023-11-17 14:59:16,348 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 414 predicate places. [2023-11-17 14:59:16,348 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 460 transitions, 7445 flow [2023-11-17 14:59:16,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:59:16,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:59:16,349 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] [2023-11-17 14:59:16,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 14:59:16,349 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:59:16,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:59:16,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1827595576, now seen corresponding path program 9 times [2023-11-17 14:59:16,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:59:16,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334309624] [2023-11-17 14:59:16,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:59:16,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:59:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:59:18,216 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 14:59:18,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:59:18,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334309624] [2023-11-17 14:59:18,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334309624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:59:18,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:59:18,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-17 14:59:18,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491602466] [2023-11-17 14:59:18,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:59:18,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 14:59:18,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:59:18,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 14:59:18,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2023-11-17 14:59:18,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 511 [2023-11-17 14:59:18,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 460 transitions, 7445 flow. Second operand has 22 states, 22 states have (on average 147.63636363636363) internal successors, (3248), 22 states have internal predecessors, (3248), 0 states have call successors, (0), 0 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 14:59:18,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:59:18,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 511 [2023-11-17 14:59:18,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:59:22,463 INFO L124 PetriNetUnfolderBase]: 3698/7040 cut-off events. [2023-11-17 14:59:22,463 INFO L125 PetriNetUnfolderBase]: For 1377678/1377678 co-relation queries the response was YES. [2023-11-17 14:59:22,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80591 conditions, 7040 events. 3698/7040 cut-off events. For 1377678/1377678 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 44700 event pairs, 836 based on Foata normal form. 28/6630 useless extension candidates. Maximal degree in co-relation 80395. Up to 3281 conditions per place. [2023-11-17 14:59:22,559 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 298 selfloop transitions, 295 changer transitions 60/657 dead transitions. [2023-11-17 14:59:22,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 657 transitions, 13431 flow [2023-11-17 14:59:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-17 14:59:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-17 14:59:22,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5242 transitions. [2023-11-17 14:59:22,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3017152066305974 [2023-11-17 14:59:22,567 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5242 transitions. [2023-11-17 14:59:22,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5242 transitions. [2023-11-17 14:59:22,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:59:22,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5242 transitions. [2023-11-17 14:59:22,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 154.1764705882353) internal successors, (5242), 34 states have internal predecessors, (5242), 0 states have call successors, (0), 0 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 14:59:22,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 511.0) internal successors, (17885), 35 states have internal predecessors, (17885), 0 states have call successors, (0), 0 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 14:59:22,591 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 511.0) internal successors, (17885), 35 states have internal predecessors, (17885), 0 states have call successors, (0), 0 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 14:59:22,592 INFO L175 Difference]: Start difference. First operand has 473 places, 460 transitions, 7445 flow. Second operand 34 states and 5242 transitions. [2023-11-17 14:59:22,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 657 transitions, 13431 flow [2023-11-17 14:59:25,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 657 transitions, 12374 flow, removed 383 selfloop flow, removed 20 redundant places. [2023-11-17 14:59:25,180 INFO L231 Difference]: Finished difference. Result has 497 places, 482 transitions, 8159 flow [2023-11-17 14:59:25,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=6618, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=8159, PETRI_PLACES=497, PETRI_TRANSITIONS=482} [2023-11-17 14:59:25,181 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 438 predicate places. [2023-11-17 14:59:25,181 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 482 transitions, 8159 flow [2023-11-17 14:59:25,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 147.63636363636363) internal successors, (3248), 22 states have internal predecessors, (3248), 0 states have call successors, (0), 0 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 14:59:25,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:59:25,182 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] [2023-11-17 14:59:25,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 14:59:25,182 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:59:25,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:59:25,182 INFO L85 PathProgramCache]: Analyzing trace with hash 294665830, now seen corresponding path program 10 times [2023-11-17 14:59:25,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:59:25,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588147081] [2023-11-17 14:59:25,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:59:25,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:59:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:59:26,865 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 14:59:26,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:59:26,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588147081] [2023-11-17 14:59:26,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588147081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:59:26,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:59:26,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-17 14:59:26,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824200691] [2023-11-17 14:59:26,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:59:26,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 14:59:26,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:59:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 14:59:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-11-17 14:59:26,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 511 [2023-11-17 14:59:26,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 482 transitions, 8159 flow. Second operand has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 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 14:59:26,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:59:26,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 511 [2023-11-17 14:59:26,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:59:30,639 INFO L124 PetriNetUnfolderBase]: 3853/7370 cut-off events. [2023-11-17 14:59:30,640 INFO L125 PetriNetUnfolderBase]: For 1542799/1542803 co-relation queries the response was YES. [2023-11-17 14:59:30,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84822 conditions, 7370 events. 3853/7370 cut-off events. For 1542799/1542803 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 47496 event pairs, 1138 based on Foata normal form. 90/6991 useless extension candidates. Maximal degree in co-relation 84617. Up to 6126 conditions per place. [2023-11-17 14:59:30,741 INFO L140 encePairwiseOnDemand]: 485/511 looper letters, 481 selfloop transitions, 105 changer transitions 28/618 dead transitions. [2023-11-17 14:59:30,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 618 transitions, 12546 flow [2023-11-17 14:59:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 14:59:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 14:59:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4142 transitions. [2023-11-17 14:59:30,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3002101906211495 [2023-11-17 14:59:30,746 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4142 transitions. [2023-11-17 14:59:30,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4142 transitions. [2023-11-17 14:59:30,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:59:30,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4142 transitions. [2023-11-17 14:59:30,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 153.40740740740742) internal successors, (4142), 27 states have internal predecessors, (4142), 0 states have call successors, (0), 0 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 14:59:30,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 511.0) internal successors, (14308), 28 states have internal predecessors, (14308), 0 states have call successors, (0), 0 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 14:59:30,763 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 511.0) internal successors, (14308), 28 states have internal predecessors, (14308), 0 states have call successors, (0), 0 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 14:59:30,763 INFO L175 Difference]: Start difference. First operand has 497 places, 482 transitions, 8159 flow. Second operand 27 states and 4142 transitions. [2023-11-17 14:59:30,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 618 transitions, 12546 flow [2023-11-17 14:59:33,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 618 transitions, 11418 flow, removed 357 selfloop flow, removed 25 redundant places. [2023-11-17 14:59:33,663 INFO L231 Difference]: Finished difference. Result has 521 places, 520 transitions, 8814 flow [2023-11-17 14:59:33,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=7228, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=8814, PETRI_PLACES=521, PETRI_TRANSITIONS=520} [2023-11-17 14:59:33,663 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 462 predicate places. [2023-11-17 14:59:33,664 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 520 transitions, 8814 flow [2023-11-17 14:59:33,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 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 14:59:33,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:59:33,664 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] [2023-11-17 14:59:33,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-17 14:59:33,664 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:59:33,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:59:33,665 INFO L85 PathProgramCache]: Analyzing trace with hash 2124443918, now seen corresponding path program 11 times [2023-11-17 14:59:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:59:33,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779088718] [2023-11-17 14:59:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:59:33,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:59:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:59:35,185 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 14:59:35,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:59:35,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779088718] [2023-11-17 14:59:35,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779088718] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:59:35,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:59:35,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:59:35,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960699669] [2023-11-17 14:59:35,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:59:35,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:59:35,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:59:35,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:59:35,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:59:35,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:59:35,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 520 transitions, 8814 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:59:35,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:59:35,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:59:35,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:59:38,844 INFO L124 PetriNetUnfolderBase]: 4003/7676 cut-off events. [2023-11-17 14:59:38,845 INFO L125 PetriNetUnfolderBase]: For 1849143/1849143 co-relation queries the response was YES. [2023-11-17 14:59:38,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91785 conditions, 7676 events. 4003/7676 cut-off events. For 1849143/1849143 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 50049 event pairs, 1203 based on Foata normal form. 88/7277 useless extension candidates. Maximal degree in co-relation 91559. Up to 6505 conditions per place. [2023-11-17 14:59:38,954 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 515 selfloop transitions, 108 changer transitions 29/656 dead transitions. [2023-11-17 14:59:38,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 656 transitions, 13566 flow [2023-11-17 14:59:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 14:59:38,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 14:59:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4046 transitions. [2023-11-17 14:59:38,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30453108535300316 [2023-11-17 14:59:38,957 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4046 transitions. [2023-11-17 14:59:38,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4046 transitions. [2023-11-17 14:59:38,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:59:38,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4046 transitions. [2023-11-17 14:59:38,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 155.6153846153846) internal successors, (4046), 26 states have internal predecessors, (4046), 0 states have call successors, (0), 0 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 14:59:38,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 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 14:59:38,970 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 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 14:59:38,970 INFO L175 Difference]: Start difference. First operand has 521 places, 520 transitions, 8814 flow. Second operand 26 states and 4046 transitions. [2023-11-17 14:59:38,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 656 transitions, 13566 flow [2023-11-17 14:59:43,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 656 transitions, 12592 flow, removed 461 selfloop flow, removed 8 redundant places. [2023-11-17 14:59:43,226 INFO L231 Difference]: Finished difference. Result has 555 places, 553 transitions, 9497 flow [2023-11-17 14:59:43,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=8032, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=9497, PETRI_PLACES=555, PETRI_TRANSITIONS=553} [2023-11-17 14:59:43,227 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 496 predicate places. [2023-11-17 14:59:43,227 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 553 transitions, 9497 flow [2023-11-17 14:59:43,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:59:43,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:59:43,228 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] [2023-11-17 14:59:43,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-17 14:59:43,228 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:59:43,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:59:43,228 INFO L85 PathProgramCache]: Analyzing trace with hash -999150032, now seen corresponding path program 12 times [2023-11-17 14:59:43,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:59:43,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518366769] [2023-11-17 14:59:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:59:43,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:59:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:59:45,052 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 14:59:45,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:59:45,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518366769] [2023-11-17 14:59:45,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518366769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:59:45,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:59:45,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:59:45,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968479665] [2023-11-17 14:59:45,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:59:45,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:59:45,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:59:45,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:59:45,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:59:45,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:59:45,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 553 transitions, 9497 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:59:45,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:59:45,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:59:45,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 14:59:49,420 INFO L124 PetriNetUnfolderBase]: 4609/8821 cut-off events. [2023-11-17 14:59:49,420 INFO L125 PetriNetUnfolderBase]: For 2211848/2211848 co-relation queries the response was YES. [2023-11-17 14:59:49,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107021 conditions, 8821 events. 4609/8821 cut-off events. For 2211848/2211848 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 59481 event pairs, 1398 based on Foata normal form. 70/8301 useless extension candidates. Maximal degree in co-relation 106783. Up to 5561 conditions per place. [2023-11-17 14:59:49,561 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 536 selfloop transitions, 173 changer transitions 33/746 dead transitions. [2023-11-17 14:59:49,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 746 transitions, 16024 flow [2023-11-17 14:59:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 14:59:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 14:59:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4067 transitions. [2023-11-17 14:59:49,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3061116965226554 [2023-11-17 14:59:49,564 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4067 transitions. [2023-11-17 14:59:49,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4067 transitions. [2023-11-17 14:59:49,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 14:59:49,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4067 transitions. [2023-11-17 14:59:49,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 156.42307692307693) internal successors, (4067), 26 states have internal predecessors, (4067), 0 states have call successors, (0), 0 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 14:59:49,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 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 14:59:49,574 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 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 14:59:49,575 INFO L175 Difference]: Start difference. First operand has 555 places, 553 transitions, 9497 flow. Second operand 26 states and 4067 transitions. [2023-11-17 14:59:49,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 746 transitions, 16024 flow [2023-11-17 14:59:54,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 746 transitions, 15137 flow, removed 426 selfloop flow, removed 7 redundant places. [2023-11-17 14:59:54,636 INFO L231 Difference]: Finished difference. Result has 592 places, 624 transitions, 11396 flow [2023-11-17 14:59:54,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=8778, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=11396, PETRI_PLACES=592, PETRI_TRANSITIONS=624} [2023-11-17 14:59:54,637 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 533 predicate places. [2023-11-17 14:59:54,637 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 624 transitions, 11396 flow [2023-11-17 14:59:54,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:59:54,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 14:59:54,638 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] [2023-11-17 14:59:54,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-17 14:59:54,638 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 14:59:54,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 14:59:54,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1609920284, now seen corresponding path program 13 times [2023-11-17 14:59:54,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 14:59:54,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968327833] [2023-11-17 14:59:54,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 14:59:54,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 14:59:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 14:59:56,150 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 14:59:56,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 14:59:56,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968327833] [2023-11-17 14:59:56,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968327833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 14:59:56,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 14:59:56,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 14:59:56,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577811187] [2023-11-17 14:59:56,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 14:59:56,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 14:59:56,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 14:59:56,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 14:59:56,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-17 14:59:56,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 14:59:56,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 624 transitions, 11396 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 14:59:56,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 14:59:56,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 14:59:56,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:00:01,875 INFO L124 PetriNetUnfolderBase]: 5132/9785 cut-off events. [2023-11-17 15:00:01,875 INFO L125 PetriNetUnfolderBase]: For 2850636/2850636 co-relation queries the response was YES. [2023-11-17 15:00:02,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124960 conditions, 9785 events. 5132/9785 cut-off events. For 2850636/2850636 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 67372 event pairs, 1234 based on Foata normal form. 90/9207 useless extension candidates. Maximal degree in co-relation 124706. Up to 5120 conditions per place. [2023-11-17 15:00:02,252 INFO L140 encePairwiseOnDemand]: 485/511 looper letters, 458 selfloop transitions, 325 changer transitions 40/827 dead transitions. [2023-11-17 15:00:02,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 827 transitions, 19199 flow [2023-11-17 15:00:02,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 15:00:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 15:00:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4987 transitions. [2023-11-17 15:00:02,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3049779843444227 [2023-11-17 15:00:02,258 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4987 transitions. [2023-11-17 15:00:02,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4987 transitions. [2023-11-17 15:00:02,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:00:02,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4987 transitions. [2023-11-17 15:00:02,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 155.84375) internal successors, (4987), 32 states have internal predecessors, (4987), 0 states have call successors, (0), 0 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 15:00:02,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 511.0) internal successors, (16863), 33 states have internal predecessors, (16863), 0 states have call successors, (0), 0 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 15:00:02,273 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 511.0) internal successors, (16863), 33 states have internal predecessors, (16863), 0 states have call successors, (0), 0 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 15:00:02,274 INFO L175 Difference]: Start difference. First operand has 592 places, 624 transitions, 11396 flow. Second operand 32 states and 4987 transitions. [2023-11-17 15:00:02,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 827 transitions, 19199 flow [2023-11-17 15:00:09,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 827 transitions, 18367 flow, removed 386 selfloop flow, removed 5 redundant places. [2023-11-17 15:00:09,491 INFO L231 Difference]: Finished difference. Result has 639 places, 697 transitions, 13886 flow [2023-11-17 15:00:09,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=10572, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=261, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=13886, PETRI_PLACES=639, PETRI_TRANSITIONS=697} [2023-11-17 15:00:09,493 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 580 predicate places. [2023-11-17 15:00:09,493 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 697 transitions, 13886 flow [2023-11-17 15:00:09,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 15:00:09,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:00:09,494 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] [2023-11-17 15:00:09,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-17 15:00:09,494 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:00:09,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:00:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash 335502900, now seen corresponding path program 14 times [2023-11-17 15:00:09,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:00:09,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487578176] [2023-11-17 15:00:09,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:00:09,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:00:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:00:21,335 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 15:00:21,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:00:21,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487578176] [2023-11-17 15:00:21,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487578176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:00:21,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:00:21,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-17 15:00:21,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791345158] [2023-11-17 15:00:21,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:00:21,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 15:00:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:00:21,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 15:00:21,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:00:21,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 511 [2023-11-17 15:00:21,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 697 transitions, 13886 flow. Second operand has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 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 15:00:21,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:00:21,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 511 [2023-11-17 15:00:21,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:00:42,724 INFO L124 PetriNetUnfolderBase]: 5314/10171 cut-off events. [2023-11-17 15:00:42,724 INFO L125 PetriNetUnfolderBase]: For 3622938/3622938 co-relation queries the response was YES. [2023-11-17 15:00:42,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139623 conditions, 10171 events. 5314/10171 cut-off events. For 3622938/3622938 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 71061 event pairs, 1514 based on Foata normal form. 98/9561 useless extension candidates. Maximal degree in co-relation 139347. Up to 6081 conditions per place. [2023-11-17 15:00:42,920 INFO L140 encePairwiseOnDemand]: 485/511 looper letters, 626 selfloop transitions, 184 changer transitions 37/851 dead transitions. [2023-11-17 15:00:42,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 851 transitions, 20437 flow [2023-11-17 15:00:42,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 15:00:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 15:00:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4022 transitions. [2023-11-17 15:00:42,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30272467258768626 [2023-11-17 15:00:42,924 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4022 transitions. [2023-11-17 15:00:42,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4022 transitions. [2023-11-17 15:00:42,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:00:42,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4022 transitions. [2023-11-17 15:00:42,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 154.69230769230768) internal successors, (4022), 26 states have internal predecessors, (4022), 0 states have call successors, (0), 0 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 15:00:42,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 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 15:00:42,935 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 511.0) internal successors, (13797), 27 states have internal predecessors, (13797), 0 states have call successors, (0), 0 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 15:00:42,935 INFO L175 Difference]: Start difference. First operand has 639 places, 697 transitions, 13886 flow. Second operand 26 states and 4022 transitions. [2023-11-17 15:00:42,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 851 transitions, 20437 flow [2023-11-17 15:00:53,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 654 places, 851 transitions, 18869 flow, removed 588 selfloop flow, removed 10 redundant places. [2023-11-17 15:00:53,469 INFO L231 Difference]: Finished difference. Result has 673 places, 736 transitions, 14608 flow [2023-11-17 15:00:53,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=12471, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=14608, PETRI_PLACES=673, PETRI_TRANSITIONS=736} [2023-11-17 15:00:53,470 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 614 predicate places. [2023-11-17 15:00:53,470 INFO L495 AbstractCegarLoop]: Abstraction has has 673 places, 736 transitions, 14608 flow [2023-11-17 15:00:53,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 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 15:00:53,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:00:53,471 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] [2023-11-17 15:00:53,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-17 15:00:53,471 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:00:53,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:00:53,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2106693650, now seen corresponding path program 15 times [2023-11-17 15:00:53,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:00:53,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272275334] [2023-11-17 15:00:53,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:00:53,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:00:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:00:55,122 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 15:00:55,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:00:55,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272275334] [2023-11-17 15:00:55,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272275334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:00:55,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:00:55,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 15:00:55,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762575343] [2023-11-17 15:00:55,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:00:55,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 15:00:55,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:00:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 15:00:55,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:00:55,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:00:55,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 736 transitions, 14608 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 15:00:55,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:00:55,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:00:55,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:02,000 INFO L124 PetriNetUnfolderBase]: 5489/10505 cut-off events. [2023-11-17 15:01:02,000 INFO L125 PetriNetUnfolderBase]: For 3828232/3828232 co-relation queries the response was YES. [2023-11-17 15:01:02,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148902 conditions, 10505 events. 5489/10505 cut-off events. For 3828232/3828232 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 73865 event pairs, 1206 based on Foata normal form. 38/9823 useless extension candidates. Maximal degree in co-relation 148608. Up to 4320 conditions per place. [2023-11-17 15:01:02,299 INFO L140 encePairwiseOnDemand]: 485/511 looper letters, 393 selfloop transitions, 460 changer transitions 39/896 dead transitions. [2023-11-17 15:01:02,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 896 transitions, 22465 flow [2023-11-17 15:01:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 15:01:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 15:01:02,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5139 transitions. [2023-11-17 15:01:02,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30475004447607185 [2023-11-17 15:01:02,302 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5139 transitions. [2023-11-17 15:01:02,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5139 transitions. [2023-11-17 15:01:02,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:02,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5139 transitions. [2023-11-17 15:01:02,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 155.72727272727272) internal successors, (5139), 33 states have internal predecessors, (5139), 0 states have call successors, (0), 0 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 15:01:02,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 511.0) internal successors, (17374), 34 states have internal predecessors, (17374), 0 states have call successors, (0), 0 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 15:01:02,315 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 511.0) internal successors, (17374), 34 states have internal predecessors, (17374), 0 states have call successors, (0), 0 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 15:01:02,315 INFO L175 Difference]: Start difference. First operand has 673 places, 736 transitions, 14608 flow. Second operand 33 states and 5139 transitions. [2023-11-17 15:01:02,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 896 transitions, 22465 flow [2023-11-17 15:01:14,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 896 transitions, 20980 flow, removed 683 selfloop flow, removed 8 redundant places. [2023-11-17 15:01:14,926 INFO L231 Difference]: Finished difference. Result has 709 places, 760 transitions, 15741 flow [2023-11-17 15:01:14,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=13423, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=15741, PETRI_PLACES=709, PETRI_TRANSITIONS=760} [2023-11-17 15:01:14,929 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 650 predicate places. [2023-11-17 15:01:14,929 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 760 transitions, 15741 flow [2023-11-17 15:01:14,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 15:01:14,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:14,930 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] [2023-11-17 15:01:14,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-17 15:01:14,930 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:14,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:14,930 INFO L85 PathProgramCache]: Analyzing trace with hash 816388540, now seen corresponding path program 16 times [2023-11-17 15:01:14,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:14,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262423613] [2023-11-17 15:01:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:14,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:16,220 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 15:01:16,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:16,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262423613] [2023-11-17 15:01:16,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262423613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:16,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:16,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-17 15:01:16,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483580451] [2023-11-17 15:01:16,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:16,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 15:01:16,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:16,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 15:01:16,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:01:16,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 511 [2023-11-17 15:01:16,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 709 places, 760 transitions, 15741 flow. Second operand has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 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 15:01:16,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:16,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 511 [2023-11-17 15:01:16,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:23,464 INFO L124 PetriNetUnfolderBase]: 5695/10887 cut-off events. [2023-11-17 15:01:23,464 INFO L125 PetriNetUnfolderBase]: For 3874461/3874461 co-relation queries the response was YES. [2023-11-17 15:01:23,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155211 conditions, 10887 events. 5695/10887 cut-off events. For 3874461/3874461 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 77096 event pairs, 1085 based on Foata normal form. 28/10178 useless extension candidates. Maximal degree in co-relation 154908. Up to 3754 conditions per place. [2023-11-17 15:01:23,679 INFO L140 encePairwiseOnDemand]: 484/511 looper letters, 350 selfloop transitions, 544 changer transitions 63/961 dead transitions. [2023-11-17 15:01:23,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 961 transitions, 24570 flow [2023-11-17 15:01:23,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-17 15:01:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-11-17 15:01:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5385 transitions. [2023-11-17 15:01:23,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30109029913335195 [2023-11-17 15:01:23,795 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5385 transitions. [2023-11-17 15:01:23,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5385 transitions. [2023-11-17 15:01:23,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:23,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5385 transitions. [2023-11-17 15:01:23,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 153.85714285714286) internal successors, (5385), 35 states have internal predecessors, (5385), 0 states have call successors, (0), 0 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 15:01:23,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 511.0) internal successors, (18396), 36 states have internal predecessors, (18396), 0 states have call successors, (0), 0 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 15:01:23,811 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 511.0) internal successors, (18396), 36 states have internal predecessors, (18396), 0 states have call successors, (0), 0 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 15:01:23,812 INFO L175 Difference]: Start difference. First operand has 709 places, 760 transitions, 15741 flow. Second operand 35 states and 5385 transitions. [2023-11-17 15:01:23,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 961 transitions, 24570 flow [2023-11-17 15:01:36,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 961 transitions, 23217 flow, removed 449 selfloop flow, removed 20 redundant places. [2023-11-17 15:01:36,897 INFO L231 Difference]: Finished difference. Result has 735 places, 782 transitions, 17168 flow [2023-11-17 15:01:36,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=14554, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=523, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=17168, PETRI_PLACES=735, PETRI_TRANSITIONS=782} [2023-11-17 15:01:36,899 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 676 predicate places. [2023-11-17 15:01:36,899 INFO L495 AbstractCegarLoop]: Abstraction has has 735 places, 782 transitions, 17168 flow [2023-11-17 15:01:36,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 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 15:01:36,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:01:36,900 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] [2023-11-17 15:01:36,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-17 15:01:36,900 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:01:36,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:01:36,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2001087438, now seen corresponding path program 17 times [2023-11-17 15:01:36,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:01:36,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005589871] [2023-11-17 15:01:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:01:36,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:01:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:01:43,946 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 15:01:43,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:01:43,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005589871] [2023-11-17 15:01:43,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005589871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:01:43,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:01:43,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 15:01:43,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19930397] [2023-11-17 15:01:43,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:01:43,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 15:01:43,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:01:43,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 15:01:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:01:43,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:01:43,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 735 places, 782 transitions, 17168 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 15:01:43,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:01:43,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:01:43,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:01:58,797 INFO L124 PetriNetUnfolderBase]: 5883/11264 cut-off events. [2023-11-17 15:01:58,797 INFO L125 PetriNetUnfolderBase]: For 4371715/4371715 co-relation queries the response was YES. [2023-11-17 15:01:59,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165280 conditions, 11264 events. 5883/11264 cut-off events. For 4371715/4371715 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 80376 event pairs, 1743 based on Foata normal form. 70/10566 useless extension candidates. Maximal degree in co-relation 164968. Up to 9679 conditions per place. [2023-11-17 15:01:59,049 INFO L140 encePairwiseOnDemand]: 488/511 looper letters, 743 selfloop transitions, 138 changer transitions 27/912 dead transitions. [2023-11-17 15:01:59,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 758 places, 912 transitions, 23112 flow [2023-11-17 15:01:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 15:01:59,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 15:01:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3739 transitions. [2023-11-17 15:01:59,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3048760600130463 [2023-11-17 15:01:59,053 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3739 transitions. [2023-11-17 15:01:59,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3739 transitions. [2023-11-17 15:01:59,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:01:59,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3739 transitions. [2023-11-17 15:01:59,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 155.79166666666666) internal successors, (3739), 24 states have internal predecessors, (3739), 0 states have call successors, (0), 0 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 15:01:59,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 511.0) internal successors, (12775), 25 states have internal predecessors, (12775), 0 states have call successors, (0), 0 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 15:01:59,062 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 511.0) internal successors, (12775), 25 states have internal predecessors, (12775), 0 states have call successors, (0), 0 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 15:01:59,062 INFO L175 Difference]: Start difference. First operand has 735 places, 782 transitions, 17168 flow. Second operand 24 states and 3739 transitions. [2023-11-17 15:01:59,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 758 places, 912 transitions, 23112 flow [2023-11-17 15:02:17,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 912 transitions, 21636 flow, removed 476 selfloop flow, removed 19 redundant places. [2023-11-17 15:02:17,409 INFO L231 Difference]: Finished difference. Result has 755 places, 818 transitions, 17938 flow [2023-11-17 15:02:17,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=15912, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=655, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=17938, PETRI_PLACES=755, PETRI_TRANSITIONS=818} [2023-11-17 15:02:17,411 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 696 predicate places. [2023-11-17 15:02:17,411 INFO L495 AbstractCegarLoop]: Abstraction has has 755 places, 818 transitions, 17938 flow [2023-11-17 15:02:17,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 15:02:17,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:02:17,411 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] [2023-11-17 15:02:17,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-17 15:02:17,412 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:02:17,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:02:17,412 INFO L85 PathProgramCache]: Analyzing trace with hash 808321648, now seen corresponding path program 18 times [2023-11-17 15:02:17,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:02:17,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660765522] [2023-11-17 15:02:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:02:17,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:02:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:02:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:02:19,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:02:19,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660765522] [2023-11-17 15:02:19,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660765522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:02:19,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:02:19,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 15:02:19,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550490306] [2023-11-17 15:02:19,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:02:19,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 15:02:19,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:02:19,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 15:02:19,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:02:19,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:02:19,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 818 transitions, 17938 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 15:02:19,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:02:19,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:02:19,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:02:26,998 INFO L124 PetriNetUnfolderBase]: 6214/11913 cut-off events. [2023-11-17 15:02:26,998 INFO L125 PetriNetUnfolderBase]: For 4739369/4739369 co-relation queries the response was YES. [2023-11-17 15:02:27,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173040 conditions, 11913 events. 6214/11913 cut-off events. For 4739369/4739369 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 86332 event pairs, 1620 based on Foata normal form. 70/11159 useless extension candidates. Maximal degree in co-relation 172711. Up to 6773 conditions per place. [2023-11-17 15:02:27,335 INFO L140 encePairwiseOnDemand]: 485/511 looper letters, 692 selfloop transitions, 260 changer transitions 32/988 dead transitions. [2023-11-17 15:02:27,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 988 transitions, 25373 flow [2023-11-17 15:02:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 15:02:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 15:02:27,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3910 transitions. [2023-11-17 15:02:27,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30606653620352253 [2023-11-17 15:02:27,339 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3910 transitions. [2023-11-17 15:02:27,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3910 transitions. [2023-11-17 15:02:27,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:02:27,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3910 transitions. [2023-11-17 15:02:27,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 156.4) internal successors, (3910), 25 states have internal predecessors, (3910), 0 states have call successors, (0), 0 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 15:02:27,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 511.0) internal successors, (13286), 26 states have internal predecessors, (13286), 0 states have call successors, (0), 0 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 15:02:27,354 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 511.0) internal successors, (13286), 26 states have internal predecessors, (13286), 0 states have call successors, (0), 0 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 15:02:27,354 INFO L175 Difference]: Start difference. First operand has 755 places, 818 transitions, 17938 flow. Second operand 25 states and 3910 transitions. [2023-11-17 15:02:27,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 779 places, 988 transitions, 25373 flow [2023-11-17 15:02:44,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 771 places, 988 transitions, 23876 flow, removed 680 selfloop flow, removed 8 redundant places. [2023-11-17 15:02:44,047 INFO L231 Difference]: Finished difference. Result has 789 places, 876 transitions, 19529 flow [2023-11-17 15:02:44,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=16764, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=818, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=19529, PETRI_PLACES=789, PETRI_TRANSITIONS=876} [2023-11-17 15:02:44,048 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 730 predicate places. [2023-11-17 15:02:44,048 INFO L495 AbstractCegarLoop]: Abstraction has has 789 places, 876 transitions, 19529 flow [2023-11-17 15:02:44,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 15:02:44,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:02:44,049 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] [2023-11-17 15:02:44,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-17 15:02:44,049 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:02:44,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:02:44,049 INFO L85 PathProgramCache]: Analyzing trace with hash 197551396, now seen corresponding path program 19 times [2023-11-17 15:02:44,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:02:44,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779122579] [2023-11-17 15:02:44,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:02:44,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:02:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:02:47,126 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 15:02:47,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:02:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779122579] [2023-11-17 15:02:47,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779122579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:02:47,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:02:47,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 15:02:47,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150947960] [2023-11-17 15:02:47,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:02:47,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 15:02:47,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:02:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 15:02:47,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:02:47,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:02:47,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 789 places, 876 transitions, 19529 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 15:02:47,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:02:47,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:02:47,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:02,497 INFO L124 PetriNetUnfolderBase]: 6558/12538 cut-off events. [2023-11-17 15:03:02,497 INFO L125 PetriNetUnfolderBase]: For 5184720/5184720 co-relation queries the response was YES. [2023-11-17 15:03:02,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184188 conditions, 12538 events. 6558/12538 cut-off events. For 5184720/5184720 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 91537 event pairs, 1380 based on Foata normal form. 64/11724 useless extension candidates. Maximal degree in co-relation 183845. Up to 6103 conditions per place. [2023-11-17 15:03:03,043 INFO L140 encePairwiseOnDemand]: 485/511 looper letters, 560 selfloop transitions, 451 changer transitions 43/1058 dead transitions. [2023-11-17 15:03:03,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 820 places, 1058 transitions, 28436 flow [2023-11-17 15:03:03,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 15:03:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 15:03:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4995 transitions. [2023-11-17 15:03:03,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30546722113502933 [2023-11-17 15:03:03,049 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4995 transitions. [2023-11-17 15:03:03,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4995 transitions. [2023-11-17 15:03:03,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:03,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4995 transitions. [2023-11-17 15:03:03,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 156.09375) internal successors, (4995), 32 states have internal predecessors, (4995), 0 states have call successors, (0), 0 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 15:03:03,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 511.0) internal successors, (16863), 33 states have internal predecessors, (16863), 0 states have call successors, (0), 0 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 15:03:03,068 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 511.0) internal successors, (16863), 33 states have internal predecessors, (16863), 0 states have call successors, (0), 0 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 15:03:03,069 INFO L175 Difference]: Start difference. First operand has 789 places, 876 transitions, 19529 flow. Second operand 32 states and 4995 transitions. [2023-11-17 15:03:03,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 820 places, 1058 transitions, 28436 flow [2023-11-17 15:03:23,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 1058 transitions, 27330 flow, removed 506 selfloop flow, removed 8 redundant places. [2023-11-17 15:03:23,303 INFO L231 Difference]: Finished difference. Result has 831 places, 916 transitions, 21568 flow [2023-11-17 15:03:23,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=18595, PETRI_DIFFERENCE_MINUEND_PLACES=781, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=419, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=21568, PETRI_PLACES=831, PETRI_TRANSITIONS=916} [2023-11-17 15:03:23,304 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 772 predicate places. [2023-11-17 15:03:23,304 INFO L495 AbstractCegarLoop]: Abstraction has has 831 places, 916 transitions, 21568 flow [2023-11-17 15:03:23,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 15:03:23,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:03:23,305 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] [2023-11-17 15:03:23,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-17 15:03:23,305 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:03:23,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:03:23,306 INFO L85 PathProgramCache]: Analyzing trace with hash 2142974580, now seen corresponding path program 20 times [2023-11-17 15:03:23,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:03:23,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731795734] [2023-11-17 15:03:23,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:03:23,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:03:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:03:24,644 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 15:03:24,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:03:24,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731795734] [2023-11-17 15:03:24,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731795734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:03:24,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:03:24,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-17 15:03:24,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849186785] [2023-11-17 15:03:24,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:03:24,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 15:03:24,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:03:24,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 15:03:24,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:03:24,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 511 [2023-11-17 15:03:24,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 831 places, 916 transitions, 21568 flow. Second operand has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 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 15:03:24,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:03:24,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 511 [2023-11-17 15:03:24,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:03:35,387 INFO L124 PetriNetUnfolderBase]: 6738/12902 cut-off events. [2023-11-17 15:03:35,387 INFO L125 PetriNetUnfolderBase]: For 6065295/6065295 co-relation queries the response was YES. [2023-11-17 15:03:35,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196913 conditions, 12902 events. 6738/12902 cut-off events. For 6065295/6065295 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 95151 event pairs, 1782 based on Foata normal form. 90/12076 useless extension candidates. Maximal degree in co-relation 196553. Up to 7599 conditions per place. [2023-11-17 15:03:35,806 INFO L140 encePairwiseOnDemand]: 485/511 looper letters, 792 selfloop transitions, 238 changer transitions 37/1071 dead transitions. [2023-11-17 15:03:35,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 1071 transitions, 28987 flow [2023-11-17 15:03:35,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 15:03:35,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 15:03:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4166 transitions. [2023-11-17 15:03:35,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30194969920997317 [2023-11-17 15:03:35,809 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4166 transitions. [2023-11-17 15:03:35,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4166 transitions. [2023-11-17 15:03:35,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:03:35,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4166 transitions. [2023-11-17 15:03:35,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 154.2962962962963) internal successors, (4166), 27 states have internal predecessors, (4166), 0 states have call successors, (0), 0 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 15:03:35,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 511.0) internal successors, (14308), 28 states have internal predecessors, (14308), 0 states have call successors, (0), 0 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 15:03:35,824 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 511.0) internal successors, (14308), 28 states have internal predecessors, (14308), 0 states have call successors, (0), 0 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 15:03:35,824 INFO L175 Difference]: Start difference. First operand has 831 places, 916 transitions, 21568 flow. Second operand 27 states and 4166 transitions. [2023-11-17 15:03:35,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 1071 transitions, 28987 flow [2023-11-17 15:04:02,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 845 places, 1071 transitions, 27479 flow, removed 565 selfloop flow, removed 12 redundant places. [2023-11-17 15:04:02,483 INFO L231 Difference]: Finished difference. Result has 865 places, 951 transitions, 22467 flow [2023-11-17 15:04:02,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=20228, PETRI_DIFFERENCE_MINUEND_PLACES=819, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=916, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=22467, PETRI_PLACES=865, PETRI_TRANSITIONS=951} [2023-11-17 15:04:02,484 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 806 predicate places. [2023-11-17 15:04:02,484 INFO L495 AbstractCegarLoop]: Abstraction has has 865 places, 951 transitions, 22467 flow [2023-11-17 15:04:02,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 147.71428571428572) internal successors, (3102), 21 states have internal predecessors, (3102), 0 states have call successors, (0), 0 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 15:04:02,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:02,485 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] [2023-11-17 15:04:02,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-17 15:04:02,485 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:04:02,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:02,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1382543940, now seen corresponding path program 21 times [2023-11-17 15:04:02,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:02,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167956568] [2023-11-17 15:04:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:02,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:03,898 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 15:04:03,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:03,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167956568] [2023-11-17 15:04:03,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167956568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:03,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:03,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-17 15:04:03,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811849408] [2023-11-17 15:04:03,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:03,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 15:04:03,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:03,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 15:04:03,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-11-17 15:04:03,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 511 [2023-11-17 15:04:03,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 865 places, 951 transitions, 22467 flow. Second operand has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 15:04:03,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:03,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 511 [2023-11-17 15:04:03,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:04:13,988 INFO L124 PetriNetUnfolderBase]: 6545/12558 cut-off events. [2023-11-17 15:04:13,989 INFO L125 PetriNetUnfolderBase]: For 6250736/6250736 co-relation queries the response was YES. [2023-11-17 15:04:14,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199205 conditions, 12558 events. 6545/12558 cut-off events. For 6250736/6250736 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 91801 event pairs, 1022 based on Foata normal form. 232/11974 useless extension candidates. Maximal degree in co-relation 198828. Up to 4963 conditions per place. [2023-11-17 15:04:14,484 INFO L140 encePairwiseOnDemand]: 486/511 looper letters, 507 selfloop transitions, 596 changer transitions 78/1185 dead transitions. [2023-11-17 15:04:14,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 1185 transitions, 33876 flow [2023-11-17 15:04:14,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 15:04:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 15:04:14,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4995 transitions. [2023-11-17 15:04:14,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30546722113502933 [2023-11-17 15:04:14,488 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4995 transitions. [2023-11-17 15:04:14,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4995 transitions. [2023-11-17 15:04:14,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:04:14,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4995 transitions. [2023-11-17 15:04:14,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 156.09375) internal successors, (4995), 32 states have internal predecessors, (4995), 0 states have call successors, (0), 0 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 15:04:14,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 511.0) internal successors, (16863), 33 states have internal predecessors, (16863), 0 states have call successors, (0), 0 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 15:04:14,506 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 511.0) internal successors, (16863), 33 states have internal predecessors, (16863), 0 states have call successors, (0), 0 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 15:04:14,506 INFO L175 Difference]: Start difference. First operand has 865 places, 951 transitions, 22467 flow. Second operand 32 states and 4995 transitions. [2023-11-17 15:04:14,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 1185 transitions, 33876 flow [2023-11-17 15:04:43,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 1185 transitions, 32476 flow, removed 651 selfloop flow, removed 5 redundant places. [2023-11-17 15:04:43,128 INFO L231 Difference]: Finished difference. Result has 901 places, 995 transitions, 24585 flow [2023-11-17 15:04:43,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=511, PETRI_DIFFERENCE_MINUEND_FLOW=21299, PETRI_DIFFERENCE_MINUEND_PLACES=860, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=951, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=560, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=24585, PETRI_PLACES=901, PETRI_TRANSITIONS=995} [2023-11-17 15:04:43,129 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 842 predicate places. [2023-11-17 15:04:43,129 INFO L495 AbstractCegarLoop]: Abstraction has has 901 places, 995 transitions, 24585 flow [2023-11-17 15:04:43,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 149.8) internal successors, (2996), 20 states have internal predecessors, (2996), 0 states have call successors, (0), 0 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 15:04:43,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:04:43,130 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] [2023-11-17 15:04:43,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-17 15:04:43,130 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-17 15:04:43,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:04:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash 77381778, now seen corresponding path program 22 times [2023-11-17 15:04:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:04:43,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832647800] [2023-11-17 15:04:43,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:04:43,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:04:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:04:55,520 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 15:04:55,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:04:55,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832647800] [2023-11-17 15:04:55,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832647800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:04:55,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:04:55,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-17 15:04:55,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748496718] [2023-11-17 15:04:55,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:04:55,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 15:04:55,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:04:55,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 15:04:55,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:04:55,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 511 [2023-11-17 15:04:55,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 901 places, 995 transitions, 24585 flow. Second operand has 21 states, 21 states have (on average 137.71428571428572) internal successors, (2892), 21 states have internal predecessors, (2892), 0 states have call successors, (0), 0 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 15:04:55,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:04:55,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 511 [2023-11-17 15:04:55,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:05:22,311 INFO L124 PetriNetUnfolderBase]: 6600/12653 cut-off events. [2023-11-17 15:05:22,311 INFO L125 PetriNetUnfolderBase]: For 6223830/6223830 co-relation queries the response was YES. [2023-11-17 15:05:22,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202580 conditions, 12653 events. 6600/12653 cut-off events. For 6223830/6223830 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 92545 event pairs, 1367 based on Foata normal form. 46/11855 useless extension candidates. Maximal degree in co-relation 202193. Up to 7368 conditions per place. [2023-11-17 15:05:22,753 INFO L140 encePairwiseOnDemand]: 486/511 looper letters, 694 selfloop transitions, 429 changer transitions 42/1169 dead transitions. [2023-11-17 15:05:22,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 1169 transitions, 33948 flow [2023-11-17 15:05:22,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-17 15:05:22,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-17 15:05:22,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4454 transitions. [2023-11-17 15:05:22,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28116911811123035 [2023-11-17 15:05:22,756 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4454 transitions. [2023-11-17 15:05:22,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4454 transitions. [2023-11-17 15:05:22,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:05:22,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4454 transitions. [2023-11-17 15:05:22,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 143.67741935483872) internal successors, (4454), 31 states have internal predecessors, (4454), 0 states have call successors, (0), 0 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 15:05:22,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 511.0) internal successors, (16352), 32 states have internal predecessors, (16352), 0 states have call successors, (0), 0 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 15:05:22,771 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 511.0) internal successors, (16352), 32 states have internal predecessors, (16352), 0 states have call successors, (0), 0 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 15:05:22,771 INFO L175 Difference]: Start difference. First operand has 901 places, 995 transitions, 24585 flow. Second operand 31 states and 4454 transitions. [2023-11-17 15:05:22,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 1169 transitions, 33948 flow Received shutdown request... [2023-11-17 15:05:29,030 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-17 15:05:29,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-17 15:05:29,031 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 15:05:29,032 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-17 15:05:29,033 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-11-17 15:05:29,033 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-17 15:05:29,033 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-17 15:05:29,033 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-17 15:05:29,033 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-17 15:05:29,033 INFO L445 BasicCegarLoop]: Path program histogram: [22, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:05:29,038 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:05:29,038 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:05:29,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:05:29 BasicIcfg [2023-11-17 15:05:29,041 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:05:29,041 INFO L158 Benchmark]: Toolchain (without parser) took 495333.87ms. Allocated memory was 181.4MB in the beginning and 6.2GB in the end (delta: 6.1GB). Free memory was 119.7MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-11-17 15:05:29,042 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:05:29,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.69ms. Allocated memory was 181.4MB in the beginning and 223.3MB in the end (delta: 41.9MB). Free memory was 119.5MB in the beginning and 177.5MB in the end (delta: -58.0MB). Peak memory consumption was 20.1MB. Max. memory is 8.0GB. [2023-11-17 15:05:29,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.12ms. Allocated memory is still 223.3MB. Free memory was 177.5MB in the beginning and 174.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:05:29,042 INFO L158 Benchmark]: Boogie Preprocessor took 34.73ms. Allocated memory is still 223.3MB. Free memory was 174.4MB in the beginning and 171.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:05:29,043 INFO L158 Benchmark]: RCFGBuilder took 538.22ms. Allocated memory is still 223.3MB. Free memory was 171.8MB in the beginning and 146.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-11-17 15:05:29,043 INFO L158 Benchmark]: TraceAbstraction took 494142.62ms. Allocated memory was 223.3MB in the beginning and 6.2GB in the end (delta: 6.0GB). Free memory was 145.5MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-11-17 15:05:29,044 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 181.4MB. Free memory is still 136.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 558.69ms. Allocated memory was 181.4MB in the beginning and 223.3MB in the end (delta: 41.9MB). Free memory was 119.5MB in the beginning and 177.5MB in the end (delta: -58.0MB). Peak memory consumption was 20.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.12ms. Allocated memory is still 223.3MB. Free memory was 177.5MB in the beginning and 174.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.73ms. Allocated memory is still 223.3MB. Free memory was 174.4MB in the beginning and 171.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 538.22ms. Allocated memory is still 223.3MB. Free memory was 171.8MB in the beginning and 146.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * TraceAbstraction took 494142.62ms. Allocated memory was 223.3MB in the beginning and 6.2GB in the end (delta: 6.0GB). Free memory was 145.5MB in the beginning and 3.8GB in the end (delta: -3.6GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.1s, 253 PlacesBefore, 59 PlacesAfterwards, 261 TransitionsBefore, 62 TransitionsAfterwards, 17694 CoEnabledTransitionPairs, 8 FixpointIterations, 61 TrivialSequentialCompositions, 137 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 26 ConcurrentYvCompositions, 5 ChoiceCompositions, 238 TotalNumberOfCompositions, 32926 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16961, independent: 16342, independent conditional: 0, independent unconditional: 16342, dependent: 619, dependent conditional: 0, dependent unconditional: 619, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11737, independent: 11555, independent conditional: 0, independent unconditional: 11555, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 11737, independent: 11525, independent conditional: 0, independent unconditional: 11525, dependent: 212, dependent conditional: 0, dependent unconditional: 212, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 212, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 182, dependent conditional: 0, dependent unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 332, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 298, dependent conditional: 0, dependent unconditional: 298, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 16961, independent: 4787, independent conditional: 0, independent unconditional: 4787, dependent: 437, dependent conditional: 0, dependent unconditional: 437, unknown: 11737, unknown conditional: 0, unknown unconditional: 11737] , Statistics on independence cache: Total cache size (in pairs): 655, Positive cache size: 576, Positive conditional cache size: 0, Positive unconditional cache size: 576, Negative cache size: 79, Negative conditional cache size: 0, Negative unconditional cache size: 79, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1043]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1059]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1063]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1062]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 1032]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 433 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 494.0s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 391.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4947 SdHoareTripleChecker+Valid, 78.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4947 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 72.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 624 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49689 IncrementalHoareTripleChecker+Invalid, 50313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 624 mSolverCounterUnsat, 16 mSDtfsCounter, 49689 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1145 GetRequests, 150 SyntacticMatches, 31 SemanticMatches, 964 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6376 ImplicationChecksByTransitivity, 62.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24585occurred in iteration=38, InterpolantAutomatonStates: 754, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 94.0s InterpolantComputationTime, 1194 NumberOfCodeBlocks, 1194 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1155 ConstructedInterpolants, 0 QuantifiedInterpolants, 224881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout [2023-11-17 15:05:29,076 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end Completed graceful shutdown