/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/weaver/parallel-bakery-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:01:42,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:01:42,781 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 16:01:42,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:01:42,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:01:42,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:01:42,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:01:42,807 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:01:42,807 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:01:42,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:01:42,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:01:42,810 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:01:42,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:01:42,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:01:42,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:01:42,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:01:42,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:01:42,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:01:42,812 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:01:42,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:01:42,812 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:01:42,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:01:42,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:01:42,813 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:01:42,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:01:42,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:01:42,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:01:42,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:01:42,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:01:42,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:01:42,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:01:42,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:01:42,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:01:43,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:01:43,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:01:43,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:01:43,020 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:01:43,021 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:01:43,021 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-11-17 16:01:43,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:01:44,023 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:01:44,023 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-11-17 16:01:44,035 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04a972555/7942f7a73393469aa617a92318457aab/FLAGbaf39053c [2023-11-17 16:01:44,043 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04a972555/7942f7a73393469aa617a92318457aab [2023-11-17 16:01:44,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:01:44,045 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:01:44,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:01:44,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:01:44,050 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:01:44,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68414474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44, skipping insertion in model container [2023-11-17 16:01:44,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:01:44,200 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c[5465,5478] [2023-11-17 16:01:44,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:01:44,211 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:01:44,230 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c[5465,5478] [2023-11-17 16:01:44,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:01:44,236 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:01:44,236 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:01:44,242 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:01:44,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44 WrapperNode [2023-11-17 16:01:44,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:01:44,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:01:44,243 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:01:44,243 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:01:44,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,275 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 267 [2023-11-17 16:01:44,275 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:01:44,276 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:01:44,276 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:01:44,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:01:44,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,289 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,294 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,295 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,296 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,298 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:01:44,299 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:01:44,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:01:44,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:01:44,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (1/1) ... [2023-11-17 16:01:44,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:01:44,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:44,330 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 16:01:44,351 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 16:01:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:01:44,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:01:44,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:01:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:01:44,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:01:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:01:44,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:01:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:01:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:01:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:01:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:01:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:01:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:01:44,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:01:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:01:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:01:44,359 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 16:01:44,453 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:01:44,455 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:01:44,699 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:01:44,781 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:01:44,781 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 16:01:44,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:01:44 BoogieIcfgContainer [2023-11-17 16:01:44,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:01:44,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:01:44,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:01:44,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:01:44,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:01:44" (1/3) ... [2023-11-17 16:01:44,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5541b4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:01:44, skipping insertion in model container [2023-11-17 16:01:44,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:01:44" (2/3) ... [2023-11-17 16:01:44,786 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5541b4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:01:44, skipping insertion in model container [2023-11-17 16:01:44,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:01:44" (3/3) ... [2023-11-17 16:01:44,787 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-11-17 16:01:44,798 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:01:44,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:01:44,798 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:01:44,866 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 16:01:44,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 161 transitions, 343 flow [2023-11-17 16:01:44,961 INFO L124 PetriNetUnfolderBase]: 2/158 cut-off events. [2023-11-17 16:01:44,961 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:01:44,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 158 events. 2/158 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 116 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2023-11-17 16:01:44,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 161 transitions, 343 flow [2023-11-17 16:01:44,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 147 transitions, 312 flow [2023-11-17 16:01:44,980 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:01:44,988 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 147 transitions, 312 flow [2023-11-17 16:01:44,990 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 147 transitions, 312 flow [2023-11-17 16:01:44,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 147 transitions, 312 flow [2023-11-17 16:01:45,015 INFO L124 PetriNetUnfolderBase]: 2/147 cut-off events. [2023-11-17 16:01:45,015 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:01:45,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 147 events. 2/147 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2023-11-17 16:01:45,019 INFO L119 LiptonReduction]: Number of co-enabled transitions 2430 [2023-11-17 16:01:48,220 INFO L134 LiptonReduction]: Checked pairs total: 15648 [2023-11-17 16:01:48,220 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-11-17 16:01:48,230 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:01:48,234 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;@7ac02729, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:01:48,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 16:01:48,241 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:01:48,241 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2023-11-17 16:01:48,241 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:01:48,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:48,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:48,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:48,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:48,245 INFO L85 PathProgramCache]: Analyzing trace with hash 620278297, now seen corresponding path program 1 times [2023-11-17 16:01:48,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:48,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090698427] [2023-11-17 16:01:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:48,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:48,774 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 16:01:48,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:48,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090698427] [2023-11-17 16:01:48,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090698427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:48,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:01:48,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:01:48,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061436057] [2023-11-17 16:01:48,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:48,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:01:48,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:01:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:01:48,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:01:48,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 104 flow. Second operand has 9 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:48,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:48,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:01:48,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:49,741 INFO L124 PetriNetUnfolderBase]: 6197/9376 cut-off events. [2023-11-17 16:01:49,741 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2023-11-17 16:01:49,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19169 conditions, 9376 events. 6197/9376 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 49945 event pairs, 2421 based on Foata normal form. 1/9354 useless extension candidates. Maximal degree in co-relation 16889. Up to 3168 conditions per place. [2023-11-17 16:01:49,784 INFO L140 encePairwiseOnDemand]: 267/275 looper letters, 158 selfloop transitions, 15 changer transitions 22/198 dead transitions. [2023-11-17 16:01:49,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 198 transitions, 858 flow [2023-11-17 16:01:49,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 16:01:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 16:01:49,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1527 transitions. [2023-11-17 16:01:49,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047933884297521 [2023-11-17 16:01:49,799 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1527 transitions. [2023-11-17 16:01:49,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1527 transitions. [2023-11-17 16:01:49,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:49,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1527 transitions. [2023-11-17 16:01:49,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 138.8181818181818) internal successors, (1527), 11 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:49,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 275.0) internal successors, (3300), 12 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:49,817 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 275.0) internal successors, (3300), 12 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:49,818 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 104 flow. Second operand 11 states and 1527 transitions. [2023-11-17 16:01:49,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 198 transitions, 858 flow [2023-11-17 16:01:49,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 198 transitions, 810 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 16:01:49,834 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 184 flow [2023-11-17 16:01:49,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=184, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-11-17 16:01:49,837 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-11-17 16:01:49,838 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 184 flow [2023-11-17 16:01:49,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:49,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:49,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:49,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:01:49,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:49,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash 911984361, now seen corresponding path program 2 times [2023-11-17 16:01:49,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:49,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718268638] [2023-11-17 16:01:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:50,235 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 16:01:50,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:50,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718268638] [2023-11-17 16:01:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718268638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:50,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:01:50,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 16:01:50,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326620466] [2023-11-17 16:01:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:50,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:01:50,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:50,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:01:50,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:01:50,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:01:50,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 184 flow. Second operand has 9 states, 9 states have (on average 125.11111111111111) internal successors, (1126), 9 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:50,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:50,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:01:50,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:51,116 INFO L124 PetriNetUnfolderBase]: 7357/12378 cut-off events. [2023-11-17 16:01:51,117 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-11-17 16:01:51,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25443 conditions, 12378 events. 7357/12378 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 83282 event pairs, 1307 based on Foata normal form. 204/12313 useless extension candidates. Maximal degree in co-relation 25406. Up to 7000 conditions per place. [2023-11-17 16:01:51,173 INFO L140 encePairwiseOnDemand]: 263/275 looper letters, 124 selfloop transitions, 36 changer transitions 2/184 dead transitions. [2023-11-17 16:01:51,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 184 transitions, 770 flow [2023-11-17 16:01:51,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 16:01:51,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 16:01:51,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1376 transitions. [2023-11-17 16:01:51,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003636363636363 [2023-11-17 16:01:51,178 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1376 transitions. [2023-11-17 16:01:51,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1376 transitions. [2023-11-17 16:01:51,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:51,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1376 transitions. [2023-11-17 16:01:51,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 137.6) internal successors, (1376), 10 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:51,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 275.0) internal successors, (3025), 11 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:51,185 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 275.0) internal successors, (3025), 11 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:51,185 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 184 flow. Second operand 10 states and 1376 transitions. [2023-11-17 16:01:51,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 184 transitions, 770 flow [2023-11-17 16:01:51,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 184 transitions, 766 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 16:01:51,193 INFO L231 Difference]: Finished difference. Result has 75 places, 97 transitions, 427 flow [2023-11-17 16:01:51,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=427, PETRI_PLACES=75, PETRI_TRANSITIONS=97} [2023-11-17 16:01:51,194 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2023-11-17 16:01:51,195 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 97 transitions, 427 flow [2023-11-17 16:01:51,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.11111111111111) internal successors, (1126), 9 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:51,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:51,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:51,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:01:51,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:51,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:51,204 INFO L85 PathProgramCache]: Analyzing trace with hash -504915265, now seen corresponding path program 3 times [2023-11-17 16:01:51,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:51,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212822489] [2023-11-17 16:01:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:51,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:51,275 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 16:01:51,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:51,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212822489] [2023-11-17 16:01:51,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212822489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:51,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:01:51,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:01:51,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445353665] [2023-11-17 16:01:51,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:51,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:01:51,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:01:51,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:01:51,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 275 [2023-11-17 16:01:51,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 97 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:51,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:51,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 275 [2023-11-17 16:01:51,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:51,895 INFO L124 PetriNetUnfolderBase]: 5312/9478 cut-off events. [2023-11-17 16:01:51,895 INFO L125 PetriNetUnfolderBase]: For 6250/6819 co-relation queries the response was YES. [2023-11-17 16:01:51,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24759 conditions, 9478 events. 5312/9478 cut-off events. For 6250/6819 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 67356 event pairs, 3612 based on Foata normal form. 122/9270 useless extension candidates. Maximal degree in co-relation 18929. Up to 7183 conditions per place. [2023-11-17 16:01:51,935 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 83 selfloop transitions, 7 changer transitions 0/119 dead transitions. [2023-11-17 16:01:51,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 119 transitions, 678 flow [2023-11-17 16:01:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:01:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:01:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-11-17 16:01:51,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442424242424242 [2023-11-17 16:01:51,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-11-17 16:01:51,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-11-17 16:01:51,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:51,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-11-17 16:01:51,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:51,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:51,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:51,939 INFO L175 Difference]: Start difference. First operand has 75 places, 97 transitions, 427 flow. Second operand 3 states and 449 transitions. [2023-11-17 16:01:51,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 119 transitions, 678 flow [2023-11-17 16:01:51,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 119 transitions, 678 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 16:01:51,958 INFO L231 Difference]: Finished difference. Result has 78 places, 95 transitions, 441 flow [2023-11-17 16:01:51,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=441, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2023-11-17 16:01:51,959 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2023-11-17 16:01:51,959 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 441 flow [2023-11-17 16:01:51,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:51,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:51,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:51,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:01:51,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:51,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:51,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1286553175, now seen corresponding path program 4 times [2023-11-17 16:01:51,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:51,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787014042] [2023-11-17 16:01:51,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:51,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:52,082 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 16:01:52,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:52,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787014042] [2023-11-17 16:01:52,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787014042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:52,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:01:52,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:01:52,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73744765] [2023-11-17 16:01:52,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:52,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:01:52,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:52,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:01:52,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:01:52,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:01:52,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 441 flow. Second operand has 9 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:52,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:52,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:01:52,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:53,473 INFO L124 PetriNetUnfolderBase]: 11826/18423 cut-off events. [2023-11-17 16:01:53,473 INFO L125 PetriNetUnfolderBase]: For 13491/13621 co-relation queries the response was YES. [2023-11-17 16:01:53,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52817 conditions, 18423 events. 11826/18423 cut-off events. For 13491/13621 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 114604 event pairs, 3651 based on Foata normal form. 120/18472 useless extension candidates. Maximal degree in co-relation 30418. Up to 5412 conditions per place. [2023-11-17 16:01:53,632 INFO L140 encePairwiseOnDemand]: 267/275 looper letters, 296 selfloop transitions, 26 changer transitions 39/368 dead transitions. [2023-11-17 16:01:53,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 368 transitions, 2304 flow [2023-11-17 16:01:53,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 16:01:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 16:01:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1543 transitions. [2023-11-17 16:01:53,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100826446280992 [2023-11-17 16:01:53,636 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1543 transitions. [2023-11-17 16:01:53,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1543 transitions. [2023-11-17 16:01:53,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:53,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1543 transitions. [2023-11-17 16:01:53,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 140.27272727272728) internal successors, (1543), 11 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:53,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 275.0) internal successors, (3300), 12 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:53,643 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 275.0) internal successors, (3300), 12 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:53,643 INFO L175 Difference]: Start difference. First operand has 78 places, 95 transitions, 441 flow. Second operand 11 states and 1543 transitions. [2023-11-17 16:01:53,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 368 transitions, 2304 flow [2023-11-17 16:01:53,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 368 transitions, 2260 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 16:01:53,672 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 634 flow [2023-11-17 16:01:53,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=634, PETRI_PLACES=92, PETRI_TRANSITIONS=116} [2023-11-17 16:01:53,673 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2023-11-17 16:01:53,673 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 634 flow [2023-11-17 16:01:53,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:53,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:53,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:53,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:01:53,674 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:53,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2075032635, now seen corresponding path program 5 times [2023-11-17 16:01:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:53,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046295452] [2023-11-17 16:01:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:53,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:53,731 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 16:01:53,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:53,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046295452] [2023-11-17 16:01:53,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046295452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:53,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:01:53,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:01:53,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850281359] [2023-11-17 16:01:53,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:53,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:01:53,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:53,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:01:53,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:01:53,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 275 [2023-11-17 16:01:53,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 116 transitions, 634 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:53,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:53,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 275 [2023-11-17 16:01:53,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:54,337 INFO L124 PetriNetUnfolderBase]: 5573/10244 cut-off events. [2023-11-17 16:01:54,337 INFO L125 PetriNetUnfolderBase]: For 9237/10149 co-relation queries the response was YES. [2023-11-17 16:01:54,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29521 conditions, 10244 events. 5573/10244 cut-off events. For 9237/10149 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 75508 event pairs, 3796 based on Foata normal form. 176/10019 useless extension candidates. Maximal degree in co-relation 29414. Up to 7678 conditions per place. [2023-11-17 16:01:54,384 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 77 selfloop transitions, 16 changer transitions 0/143 dead transitions. [2023-11-17 16:01:54,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 143 transitions, 941 flow [2023-11-17 16:01:54,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:01:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:01:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-11-17 16:01:54,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442424242424242 [2023-11-17 16:01:54,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-11-17 16:01:54,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-11-17 16:01:54,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:54,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-11-17 16:01:54,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:54,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:54,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:54,388 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 634 flow. Second operand 3 states and 449 transitions. [2023-11-17 16:01:54,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 143 transitions, 941 flow [2023-11-17 16:01:54,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 143 transitions, 935 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-17 16:01:54,423 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 680 flow [2023-11-17 16:01:54,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=680, PETRI_PLACES=92, PETRI_TRANSITIONS=116} [2023-11-17 16:01:54,424 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2023-11-17 16:01:54,424 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 680 flow [2023-11-17 16:01:54,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:54,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:54,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:54,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:01:54,425 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:54,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:54,425 INFO L85 PathProgramCache]: Analyzing trace with hash 651630989, now seen corresponding path program 6 times [2023-11-17 16:01:54,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:54,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608855109] [2023-11-17 16:01:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:54,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:54,567 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 16:01:54,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:54,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608855109] [2023-11-17 16:01:54,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608855109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:54,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:01:54,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:01:54,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150374266] [2023-11-17 16:01:54,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:54,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:01:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:54,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:01:54,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:01:54,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:01:54,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 116 transitions, 680 flow. Second operand has 9 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:54,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:54,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:01:54,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:56,097 INFO L124 PetriNetUnfolderBase]: 10920/17204 cut-off events. [2023-11-17 16:01:56,097 INFO L125 PetriNetUnfolderBase]: For 18505/18551 co-relation queries the response was YES. [2023-11-17 16:01:56,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54278 conditions, 17204 events. 10920/17204 cut-off events. For 18505/18551 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 107114 event pairs, 3410 based on Foata normal form. 12/17159 useless extension candidates. Maximal degree in co-relation 51110. Up to 4905 conditions per place. [2023-11-17 16:01:56,168 INFO L140 encePairwiseOnDemand]: 267/275 looper letters, 276 selfloop transitions, 28 changer transitions 38/349 dead transitions. [2023-11-17 16:01:56,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 349 transitions, 2445 flow [2023-11-17 16:01:56,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 16:01:56,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 16:01:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1539 transitions. [2023-11-17 16:01:56,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087603305785124 [2023-11-17 16:01:56,171 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1539 transitions. [2023-11-17 16:01:56,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1539 transitions. [2023-11-17 16:01:56,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:56,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1539 transitions. [2023-11-17 16:01:56,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 139.9090909090909) internal successors, (1539), 11 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:56,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 275.0) internal successors, (3300), 12 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:56,177 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 275.0) internal successors, (3300), 12 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:56,178 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 680 flow. Second operand 11 states and 1539 transitions. [2023-11-17 16:01:56,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 349 transitions, 2445 flow [2023-11-17 16:01:56,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 349 transitions, 2347 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 16:01:56,318 INFO L231 Difference]: Finished difference. Result has 104 places, 120 transitions, 764 flow [2023-11-17 16:01:56,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=764, PETRI_PLACES=104, PETRI_TRANSITIONS=120} [2023-11-17 16:01:56,320 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2023-11-17 16:01:56,320 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 120 transitions, 764 flow [2023-11-17 16:01:56,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:56,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:56,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:56,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 16:01:56,321 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:56,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:56,321 INFO L85 PathProgramCache]: Analyzing trace with hash -508514457, now seen corresponding path program 7 times [2023-11-17 16:01:56,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:56,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020036429] [2023-11-17 16:01:56,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:56,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:56,622 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 16:01:56,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:56,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020036429] [2023-11-17 16:01:56,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020036429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:56,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:01:56,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:01:56,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635793217] [2023-11-17 16:01:56,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:56,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:01:56,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:56,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:01:56,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:01:56,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:01:56,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 120 transitions, 764 flow. Second operand has 5 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:56,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:56,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:01:56,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:57,337 INFO L124 PetriNetUnfolderBase]: 6047/10950 cut-off events. [2023-11-17 16:01:57,337 INFO L125 PetriNetUnfolderBase]: For 12099/12598 co-relation queries the response was YES. [2023-11-17 16:01:57,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33098 conditions, 10950 events. 6047/10950 cut-off events. For 12099/12598 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 77614 event pairs, 2475 based on Foata normal form. 46/10687 useless extension candidates. Maximal degree in co-relation 33022. Up to 8744 conditions per place. [2023-11-17 16:01:57,388 INFO L140 encePairwiseOnDemand]: 266/275 looper letters, 80 selfloop transitions, 21 changer transitions 0/148 dead transitions. [2023-11-17 16:01:57,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 148 transitions, 1050 flow [2023-11-17 16:01:57,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:01:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:01:57,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 687 transitions. [2023-11-17 16:01:57,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49963636363636366 [2023-11-17 16:01:57,390 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 687 transitions. [2023-11-17 16:01:57,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 687 transitions. [2023-11-17 16:01:57,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:57,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 687 transitions. [2023-11-17 16:01:57,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:57,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:57,393 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:57,393 INFO L175 Difference]: Start difference. First operand has 104 places, 120 transitions, 764 flow. Second operand 5 states and 687 transitions. [2023-11-17 16:01:57,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 148 transitions, 1050 flow [2023-11-17 16:01:57,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 148 transitions, 1005 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-17 16:01:57,497 INFO L231 Difference]: Finished difference. Result has 102 places, 118 transitions, 767 flow [2023-11-17 16:01:57,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=767, PETRI_PLACES=102, PETRI_TRANSITIONS=118} [2023-11-17 16:01:57,498 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2023-11-17 16:01:57,499 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 118 transitions, 767 flow [2023-11-17 16:01:57,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:57,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:57,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:57,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 16:01:57,499 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:57,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2112695357, now seen corresponding path program 8 times [2023-11-17 16:01:57,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:57,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120855209] [2023-11-17 16:01:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:57,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:57,757 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 16:01:57,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:57,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120855209] [2023-11-17 16:01:57,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120855209] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:57,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:01:57,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:01:57,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065790556] [2023-11-17 16:01:57,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:57,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:01:57,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:57,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:01:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:01:57,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:01:57,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 118 transitions, 767 flow. Second operand has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:57,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:57,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:01:57,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:58,643 INFO L124 PetriNetUnfolderBase]: 7675/13476 cut-off events. [2023-11-17 16:01:58,644 INFO L125 PetriNetUnfolderBase]: For 16157/16793 co-relation queries the response was YES. [2023-11-17 16:01:58,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40492 conditions, 13476 events. 7675/13476 cut-off events. For 16157/16793 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 96436 event pairs, 2583 based on Foata normal form. 176/13308 useless extension candidates. Maximal degree in co-relation 39589. Up to 9198 conditions per place. [2023-11-17 16:01:58,702 INFO L140 encePairwiseOnDemand]: 263/275 looper letters, 121 selfloop transitions, 27 changer transitions 0/195 dead transitions. [2023-11-17 16:01:58,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 195 transitions, 1346 flow [2023-11-17 16:01:58,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:01:58,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:01:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 966 transitions. [2023-11-17 16:01:58,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018181818181818 [2023-11-17 16:01:58,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 966 transitions. [2023-11-17 16:01:58,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 966 transitions. [2023-11-17 16:01:58,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:58,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 966 transitions. [2023-11-17 16:01:58,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:58,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:58,708 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:58,708 INFO L175 Difference]: Start difference. First operand has 102 places, 118 transitions, 767 flow. Second operand 7 states and 966 transitions. [2023-11-17 16:01:58,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 195 transitions, 1346 flow [2023-11-17 16:01:58,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 195 transitions, 1318 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:01:58,809 INFO L231 Difference]: Finished difference. Result has 109 places, 137 transitions, 929 flow [2023-11-17 16:01:58,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=929, PETRI_PLACES=109, PETRI_TRANSITIONS=137} [2023-11-17 16:01:58,810 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2023-11-17 16:01:58,810 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 137 transitions, 929 flow [2023-11-17 16:01:58,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:58,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:58,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:58,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 16:01:58,811 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:01:58,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:58,811 INFO L85 PathProgramCache]: Analyzing trace with hash -476159995, now seen corresponding path program 9 times [2023-11-17 16:01:58,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:58,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043475380] [2023-11-17 16:01:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:58,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:59,059 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 16:01:59,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:59,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043475380] [2023-11-17 16:01:59,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043475380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:01:59,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:01:59,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 16:01:59,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38797105] [2023-11-17 16:01:59,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:01:59,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:01:59,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:59,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:01:59,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:01:59,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:01:59,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 137 transitions, 929 flow. Second operand has 9 states, 9 states have (on average 125.11111111111111) internal successors, (1126), 9 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:59,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:59,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:01:59,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:00,185 INFO L124 PetriNetUnfolderBase]: 8791/15280 cut-off events. [2023-11-17 16:02:00,185 INFO L125 PetriNetUnfolderBase]: For 25816/26840 co-relation queries the response was YES. [2023-11-17 16:02:00,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50326 conditions, 15280 events. 8791/15280 cut-off events. For 25816/26840 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 110492 event pairs, 3139 based on Foata normal form. 260/15178 useless extension candidates. Maximal degree in co-relation 49323. Up to 10772 conditions per place. [2023-11-17 16:02:00,262 INFO L140 encePairwiseOnDemand]: 263/275 looper letters, 138 selfloop transitions, 32 changer transitions 4/221 dead transitions. [2023-11-17 16:02:00,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 221 transitions, 1629 flow [2023-11-17 16:02:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:02:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:02:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1227 transitions. [2023-11-17 16:02:00,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49575757575757573 [2023-11-17 16:02:00,265 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1227 transitions. [2023-11-17 16:02:00,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1227 transitions. [2023-11-17 16:02:00,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:00,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1227 transitions. [2023-11-17 16:02:00,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.33333333333334) internal successors, (1227), 9 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:00,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 275.0) internal successors, (2750), 10 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:00,270 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 275.0) internal successors, (2750), 10 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:00,270 INFO L175 Difference]: Start difference. First operand has 109 places, 137 transitions, 929 flow. Second operand 9 states and 1227 transitions. [2023-11-17 16:02:00,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 221 transitions, 1629 flow [2023-11-17 16:02:00,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 221 transitions, 1595 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-11-17 16:02:00,421 INFO L231 Difference]: Finished difference. Result has 121 places, 148 transitions, 1078 flow [2023-11-17 16:02:00,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=121, PETRI_TRANSITIONS=148} [2023-11-17 16:02:00,422 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2023-11-17 16:02:00,422 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 148 transitions, 1078 flow [2023-11-17 16:02:00,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.11111111111111) internal successors, (1126), 9 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:00,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:00,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:00,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 16:02:00,422 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:00,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:00,423 INFO L85 PathProgramCache]: Analyzing trace with hash 122281057, now seen corresponding path program 10 times [2023-11-17 16:02:00,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:00,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450905072] [2023-11-17 16:02:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:00,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:00,629 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 16:02:00,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:00,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450905072] [2023-11-17 16:02:00,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450905072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:00,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:00,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:02:00,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911073402] [2023-11-17 16:02:00,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:00,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:02:00,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:02:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:02:00,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:00,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 148 transitions, 1078 flow. Second operand has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:00,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:00,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:00,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:02,316 INFO L124 PetriNetUnfolderBase]: 10217/17490 cut-off events. [2023-11-17 16:02:02,316 INFO L125 PetriNetUnfolderBase]: For 37690/38771 co-relation queries the response was YES. [2023-11-17 16:02:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60272 conditions, 17490 events. 10217/17490 cut-off events. For 37690/38771 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 127052 event pairs, 4262 based on Foata normal form. 206/17257 useless extension candidates. Maximal degree in co-relation 59192. Up to 13173 conditions per place. [2023-11-17 16:02:02,393 INFO L140 encePairwiseOnDemand]: 262/275 looper letters, 146 selfloop transitions, 28 changer transitions 1/222 dead transitions. [2023-11-17 16:02:02,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 222 transitions, 1756 flow [2023-11-17 16:02:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:02:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:02:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 964 transitions. [2023-11-17 16:02:02,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007792207792208 [2023-11-17 16:02:02,397 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 964 transitions. [2023-11-17 16:02:02,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 964 transitions. [2023-11-17 16:02:02,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:02,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 964 transitions. [2023-11-17 16:02:02,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:02,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:02,401 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:02,401 INFO L175 Difference]: Start difference. First operand has 121 places, 148 transitions, 1078 flow. Second operand 7 states and 964 transitions. [2023-11-17 16:02:02,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 222 transitions, 1756 flow [2023-11-17 16:02:02,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 222 transitions, 1715 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-17 16:02:02,562 INFO L231 Difference]: Finished difference. Result has 128 places, 168 transitions, 1264 flow [2023-11-17 16:02:02,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1264, PETRI_PLACES=128, PETRI_TRANSITIONS=168} [2023-11-17 16:02:02,562 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 75 predicate places. [2023-11-17 16:02:02,562 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 168 transitions, 1264 flow [2023-11-17 16:02:02,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:02,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:02,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:02,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 16:02:02,563 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:02,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:02,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1923200927, now seen corresponding path program 11 times [2023-11-17 16:02:02,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:02,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447504730] [2023-11-17 16:02:02,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:02,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:02,734 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 16:02:02,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:02,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447504730] [2023-11-17 16:02:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447504730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:02,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:02,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:02:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570392849] [2023-11-17 16:02:02,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:02,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:02:02,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:02,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:02:02,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:02:02,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:02,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 168 transitions, 1264 flow. Second operand has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:02,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:02,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:02,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:04,445 INFO L124 PetriNetUnfolderBase]: 11353/19430 cut-off events. [2023-11-17 16:02:04,445 INFO L125 PetriNetUnfolderBase]: For 56276/57734 co-relation queries the response was YES. [2023-11-17 16:02:04,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72336 conditions, 19430 events. 11353/19430 cut-off events. For 56276/57734 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 143188 event pairs, 4652 based on Foata normal form. 200/19156 useless extension candidates. Maximal degree in co-relation 71051. Up to 14878 conditions per place. [2023-11-17 16:02:04,532 INFO L140 encePairwiseOnDemand]: 265/275 looper letters, 179 selfloop transitions, 28 changer transitions 5/259 dead transitions. [2023-11-17 16:02:04,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 259 transitions, 2246 flow [2023-11-17 16:02:04,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:02:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:02:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 838 transitions. [2023-11-17 16:02:04,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078787878787879 [2023-11-17 16:02:04,534 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 838 transitions. [2023-11-17 16:02:04,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 838 transitions. [2023-11-17 16:02:04,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:04,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 838 transitions. [2023-11-17 16:02:04,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.66666666666666) internal successors, (838), 6 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:04,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:04,538 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:04,538 INFO L175 Difference]: Start difference. First operand has 128 places, 168 transitions, 1264 flow. Second operand 6 states and 838 transitions. [2023-11-17 16:02:04,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 259 transitions, 2246 flow [2023-11-17 16:02:04,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 259 transitions, 2188 flow, removed 29 selfloop flow, removed 0 redundant places. [2023-11-17 16:02:04,781 INFO L231 Difference]: Finished difference. Result has 137 places, 184 transitions, 1458 flow [2023-11-17 16:02:04,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1458, PETRI_PLACES=137, PETRI_TRANSITIONS=184} [2023-11-17 16:02:04,782 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2023-11-17 16:02:04,782 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 184 transitions, 1458 flow [2023-11-17 16:02:04,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:04,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:04,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:04,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 16:02:04,782 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:04,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:04,783 INFO L85 PathProgramCache]: Analyzing trace with hash 142821281, now seen corresponding path program 12 times [2023-11-17 16:02:04,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:04,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272890445] [2023-11-17 16:02:04,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:04,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:05,048 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 16:02:05,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:05,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272890445] [2023-11-17 16:02:05,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272890445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:05,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:05,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:02:05,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488132642] [2023-11-17 16:02:05,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:05,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:02:05,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:02:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:02:05,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:05,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 184 transitions, 1458 flow. Second operand has 5 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:05,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:05,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:05,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:06,747 INFO L124 PetriNetUnfolderBase]: 11269/19558 cut-off events. [2023-11-17 16:02:06,747 INFO L125 PetriNetUnfolderBase]: For 63470/64995 co-relation queries the response was YES. [2023-11-17 16:02:06,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75359 conditions, 19558 events. 11269/19558 cut-off events. For 63470/64995 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 146280 event pairs, 5419 based on Foata normal form. 122/19211 useless extension candidates. Maximal degree in co-relation 74043. Up to 16779 conditions per place. [2023-11-17 16:02:06,841 INFO L140 encePairwiseOnDemand]: 266/275 looper letters, 154 selfloop transitions, 17 changer transitions 1/219 dead transitions. [2023-11-17 16:02:06,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 219 transitions, 2000 flow [2023-11-17 16:02:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:02:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:02:06,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 685 transitions. [2023-11-17 16:02:06,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49818181818181817 [2023-11-17 16:02:06,843 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 685 transitions. [2023-11-17 16:02:06,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 685 transitions. [2023-11-17 16:02:06,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:06,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 685 transitions. [2023-11-17 16:02:06,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:06,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:06,846 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:06,846 INFO L175 Difference]: Start difference. First operand has 137 places, 184 transitions, 1458 flow. Second operand 5 states and 685 transitions. [2023-11-17 16:02:06,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 219 transitions, 2000 flow [2023-11-17 16:02:07,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 219 transitions, 1990 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-11-17 16:02:07,109 INFO L231 Difference]: Finished difference. Result has 142 places, 190 transitions, 1565 flow [2023-11-17 16:02:07,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1565, PETRI_PLACES=142, PETRI_TRANSITIONS=190} [2023-11-17 16:02:07,109 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 89 predicate places. [2023-11-17 16:02:07,110 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 190 transitions, 1565 flow [2023-11-17 16:02:07,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.4) internal successors, (642), 5 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:07,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:07,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:07,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 16:02:07,110 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:07,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:07,110 INFO L85 PathProgramCache]: Analyzing trace with hash 539688645, now seen corresponding path program 13 times [2023-11-17 16:02:07,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:07,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684075503] [2023-11-17 16:02:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:07,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:07,301 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 16:02:07,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:07,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684075503] [2023-11-17 16:02:07,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684075503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:07,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:07,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:02:07,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131278551] [2023-11-17 16:02:07,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:07,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:02:07,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:07,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:02:07,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:02:07,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:07,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 190 transitions, 1565 flow. Second operand has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:07,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:07,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:07,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:09,427 INFO L124 PetriNetUnfolderBase]: 12734/22251 cut-off events. [2023-11-17 16:02:09,427 INFO L125 PetriNetUnfolderBase]: For 76342/77725 co-relation queries the response was YES. [2023-11-17 16:02:09,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87054 conditions, 22251 events. 12734/22251 cut-off events. For 76342/77725 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 172286 event pairs, 4650 based on Foata normal form. 318/22177 useless extension candidates. Maximal degree in co-relation 85736. Up to 16026 conditions per place. [2023-11-17 16:02:09,545 INFO L140 encePairwiseOnDemand]: 265/275 looper letters, 188 selfloop transitions, 48 changer transitions 1/284 dead transitions. [2023-11-17 16:02:09,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 284 transitions, 2695 flow [2023-11-17 16:02:09,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:02:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:02:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 840 transitions. [2023-11-17 16:02:09,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2023-11-17 16:02:09,547 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 840 transitions. [2023-11-17 16:02:09,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 840 transitions. [2023-11-17 16:02:09,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:09,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 840 transitions. [2023-11-17 16:02:09,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:09,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:09,550 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:09,550 INFO L175 Difference]: Start difference. First operand has 142 places, 190 transitions, 1565 flow. Second operand 6 states and 840 transitions. [2023-11-17 16:02:09,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 284 transitions, 2695 flow [2023-11-17 16:02:10,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 284 transitions, 2613 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-11-17 16:02:10,070 INFO L231 Difference]: Finished difference. Result has 148 places, 213 transitions, 1949 flow [2023-11-17 16:02:10,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1949, PETRI_PLACES=148, PETRI_TRANSITIONS=213} [2023-11-17 16:02:10,071 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 95 predicate places. [2023-11-17 16:02:10,071 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 213 transitions, 1949 flow [2023-11-17 16:02:10,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:10,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:10,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:10,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 16:02:10,071 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:10,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2007059665, now seen corresponding path program 14 times [2023-11-17 16:02:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:10,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102512622] [2023-11-17 16:02:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:10,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:10,299 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 16:02:10,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:10,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102512622] [2023-11-17 16:02:10,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102512622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:10,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:10,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:02:10,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323813467] [2023-11-17 16:02:10,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:10,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:02:10,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:10,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:02:10,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:02:10,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:10,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 213 transitions, 1949 flow. Second operand has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:10,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:10,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:10,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:12,909 INFO L124 PetriNetUnfolderBase]: 14642/25859 cut-off events. [2023-11-17 16:02:12,909 INFO L125 PetriNetUnfolderBase]: For 108388/109928 co-relation queries the response was YES. [2023-11-17 16:02:13,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106190 conditions, 25859 events. 14642/25859 cut-off events. For 108388/109928 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 208657 event pairs, 5168 based on Foata normal form. 264/25679 useless extension candidates. Maximal degree in co-relation 104758. Up to 16094 conditions per place. [2023-11-17 16:02:13,072 INFO L140 encePairwiseOnDemand]: 265/275 looper letters, 212 selfloop transitions, 44 changer transitions 9/312 dead transitions. [2023-11-17 16:02:13,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 312 transitions, 3211 flow [2023-11-17 16:02:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:02:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:02:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 844 transitions. [2023-11-17 16:02:13,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115151515151515 [2023-11-17 16:02:13,074 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 844 transitions. [2023-11-17 16:02:13,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 844 transitions. [2023-11-17 16:02:13,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:13,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 844 transitions. [2023-11-17 16:02:13,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:13,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:13,078 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:13,078 INFO L175 Difference]: Start difference. First operand has 148 places, 213 transitions, 1949 flow. Second operand 6 states and 844 transitions. [2023-11-17 16:02:13,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 312 transitions, 3211 flow [2023-11-17 16:02:13,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 312 transitions, 3147 flow, removed 32 selfloop flow, removed 0 redundant places. [2023-11-17 16:02:13,893 INFO L231 Difference]: Finished difference. Result has 156 places, 229 transitions, 2271 flow [2023-11-17 16:02:13,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2271, PETRI_PLACES=156, PETRI_TRANSITIONS=229} [2023-11-17 16:02:13,894 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 103 predicate places. [2023-11-17 16:02:13,894 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 229 transitions, 2271 flow [2023-11-17 16:02:13,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:13,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:13,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:13,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 16:02:13,895 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:13,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:13,895 INFO L85 PathProgramCache]: Analyzing trace with hash -226090579, now seen corresponding path program 15 times [2023-11-17 16:02:13,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:13,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645301130] [2023-11-17 16:02:13,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:13,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:14,114 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 16:02:14,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645301130] [2023-11-17 16:02:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645301130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:02:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061757672] [2023-11-17 16:02:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:14,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:02:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:02:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:02:14,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:14,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 229 transitions, 2271 flow. Second operand has 8 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:14,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:14,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:14,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:17,185 INFO L124 PetriNetUnfolderBase]: 16274/28573 cut-off events. [2023-11-17 16:02:17,185 INFO L125 PetriNetUnfolderBase]: For 136377/138286 co-relation queries the response was YES. [2023-11-17 16:02:17,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121095 conditions, 28573 events. 16274/28573 cut-off events. For 136377/138286 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 232742 event pairs, 6273 based on Foata normal form. 272/28302 useless extension candidates. Maximal degree in co-relation 119135. Up to 21633 conditions per place. [2023-11-17 16:02:17,356 INFO L140 encePairwiseOnDemand]: 264/275 looper letters, 213 selfloop transitions, 50 changer transitions 1/311 dead transitions. [2023-11-17 16:02:17,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 311 transitions, 3300 flow [2023-11-17 16:02:17,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:02:17,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:02:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1088 transitions. [2023-11-17 16:02:17,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49454545454545457 [2023-11-17 16:02:17,359 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1088 transitions. [2023-11-17 16:02:17,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1088 transitions. [2023-11-17 16:02:17,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:17,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1088 transitions. [2023-11-17 16:02:17,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.0) internal successors, (1088), 8 states have internal predecessors, (1088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:17,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:17,362 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:17,362 INFO L175 Difference]: Start difference. First operand has 156 places, 229 transitions, 2271 flow. Second operand 8 states and 1088 transitions. [2023-11-17 16:02:17,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 311 transitions, 3300 flow [2023-11-17 16:02:18,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 311 transitions, 3280 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-11-17 16:02:18,296 INFO L231 Difference]: Finished difference. Result has 166 places, 247 transitions, 2584 flow [2023-11-17 16:02:18,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2584, PETRI_PLACES=166, PETRI_TRANSITIONS=247} [2023-11-17 16:02:18,297 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 113 predicate places. [2023-11-17 16:02:18,297 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 247 transitions, 2584 flow [2023-11-17 16:02:18,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:18,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:18,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:18,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 16:02:18,297 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:18,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:18,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1136923089, now seen corresponding path program 16 times [2023-11-17 16:02:18,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:18,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992172120] [2023-11-17 16:02:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:18,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:18,626 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 16:02:18,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:18,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992172120] [2023-11-17 16:02:18,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992172120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:18,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:18,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:02:18,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527118903] [2023-11-17 16:02:18,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:18,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:02:18,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:02:18,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:02:18,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:18,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 247 transitions, 2584 flow. Second operand has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:18,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:18,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:18,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:22,025 INFO L124 PetriNetUnfolderBase]: 17896/31025 cut-off events. [2023-11-17 16:02:22,025 INFO L125 PetriNetUnfolderBase]: For 167145/169766 co-relation queries the response was YES. [2023-11-17 16:02:22,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136124 conditions, 31025 events. 17896/31025 cut-off events. For 167145/169766 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 251957 event pairs, 7251 based on Foata normal form. 296/30640 useless extension candidates. Maximal degree in co-relation 134002. Up to 22468 conditions per place. [2023-11-17 16:02:22,247 INFO L140 encePairwiseOnDemand]: 264/275 looper letters, 255 selfloop transitions, 37 changer transitions 4/343 dead transitions. [2023-11-17 16:02:22,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 343 transitions, 3890 flow [2023-11-17 16:02:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:02:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:02:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 838 transitions. [2023-11-17 16:02:22,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078787878787879 [2023-11-17 16:02:22,248 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 838 transitions. [2023-11-17 16:02:22,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 838 transitions. [2023-11-17 16:02:22,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:22,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 838 transitions. [2023-11-17 16:02:22,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.66666666666666) internal successors, (838), 6 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:22,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:22,251 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:22,251 INFO L175 Difference]: Start difference. First operand has 166 places, 247 transitions, 2584 flow. Second operand 6 states and 838 transitions. [2023-11-17 16:02:22,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 343 transitions, 3890 flow [2023-11-17 16:02:23,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 343 transitions, 3828 flow, removed 24 selfloop flow, removed 2 redundant places. [2023-11-17 16:02:23,250 INFO L231 Difference]: Finished difference. Result has 172 places, 268 transitions, 2891 flow [2023-11-17 16:02:23,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2891, PETRI_PLACES=172, PETRI_TRANSITIONS=268} [2023-11-17 16:02:23,250 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 119 predicate places. [2023-11-17 16:02:23,250 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 268 transitions, 2891 flow [2023-11-17 16:02:23,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:23,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:23,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:23,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 16:02:23,251 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:23,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:23,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1597937871, now seen corresponding path program 17 times [2023-11-17 16:02:23,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:23,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617724270] [2023-11-17 16:02:23,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:23,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:23,582 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 16:02:23,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:23,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617724270] [2023-11-17 16:02:23,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617724270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:23,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:23,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:02:23,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146222500] [2023-11-17 16:02:23,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:23,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:02:23,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:02:23,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:02:23,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:23,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 268 transitions, 2891 flow. Second operand has 8 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:23,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:23,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:23,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:27,403 INFO L124 PetriNetUnfolderBase]: 19034/33233 cut-off events. [2023-11-17 16:02:27,403 INFO L125 PetriNetUnfolderBase]: For 193832/195939 co-relation queries the response was YES. [2023-11-17 16:02:27,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147284 conditions, 33233 events. 19034/33233 cut-off events. For 193832/195939 co-relation queries the response was YES. Maximal size of possible extension queue 1126. Compared 275404 event pairs, 6770 based on Foata normal form. 407/33139 useless extension candidates. Maximal degree in co-relation 145360. Up to 22557 conditions per place. [2023-11-17 16:02:27,666 INFO L140 encePairwiseOnDemand]: 265/275 looper letters, 263 selfloop transitions, 43 changer transitions 9/362 dead transitions. [2023-11-17 16:02:27,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 362 transitions, 4134 flow [2023-11-17 16:02:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:02:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:02:27,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 973 transitions. [2023-11-17 16:02:27,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054545454545455 [2023-11-17 16:02:27,668 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 973 transitions. [2023-11-17 16:02:27,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 973 transitions. [2023-11-17 16:02:27,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:27,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 973 transitions. [2023-11-17 16:02:27,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:27,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:27,671 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 275.0) internal successors, (2200), 8 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:27,671 INFO L175 Difference]: Start difference. First operand has 172 places, 268 transitions, 2891 flow. Second operand 7 states and 973 transitions. [2023-11-17 16:02:27,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 362 transitions, 4134 flow [2023-11-17 16:02:28,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 362 transitions, 4118 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-11-17 16:02:28,814 INFO L231 Difference]: Finished difference. Result has 179 places, 266 transitions, 2937 flow [2023-11-17 16:02:28,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=2866, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2937, PETRI_PLACES=179, PETRI_TRANSITIONS=266} [2023-11-17 16:02:28,815 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2023-11-17 16:02:28,815 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 266 transitions, 2937 flow [2023-11-17 16:02:28,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:28,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:28,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:28,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 16:02:28,815 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:28,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:28,816 INFO L85 PathProgramCache]: Analyzing trace with hash 693352125, now seen corresponding path program 18 times [2023-11-17 16:02:28,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:28,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288408157] [2023-11-17 16:02:28,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:28,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:29,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:29,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288408157] [2023-11-17 16:02:29,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288408157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:29,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:29,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:02:29,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750398755] [2023-11-17 16:02:29,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:29,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:02:29,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:29,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:02:29,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:02:29,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:29,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 266 transitions, 2937 flow. Second operand has 8 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:29,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:29,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:29,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:33,019 INFO L124 PetriNetUnfolderBase]: 20085/34888 cut-off events. [2023-11-17 16:02:33,020 INFO L125 PetriNetUnfolderBase]: For 220226/222498 co-relation queries the response was YES. [2023-11-17 16:02:33,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157627 conditions, 34888 events. 20085/34888 cut-off events. For 220226/222498 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 289372 event pairs, 6673 based on Foata normal form. 426/34833 useless extension candidates. Maximal degree in co-relation 155649. Up to 20520 conditions per place. [2023-11-17 16:02:33,273 INFO L140 encePairwiseOnDemand]: 264/275 looper letters, 240 selfloop transitions, 73 changer transitions 3/363 dead transitions. [2023-11-17 16:02:33,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 363 transitions, 4269 flow [2023-11-17 16:02:33,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:02:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:02:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1106 transitions. [2023-11-17 16:02:33,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027272727272727 [2023-11-17 16:02:33,276 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1106 transitions. [2023-11-17 16:02:33,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1106 transitions. [2023-11-17 16:02:33,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:33,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1106 transitions. [2023-11-17 16:02:33,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 138.25) internal successors, (1106), 8 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:33,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:33,279 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:33,279 INFO L175 Difference]: Start difference. First operand has 179 places, 266 transitions, 2937 flow. Second operand 8 states and 1106 transitions. [2023-11-17 16:02:33,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 363 transitions, 4269 flow [2023-11-17 16:02:34,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 363 transitions, 4178 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-17 16:02:34,318 INFO L231 Difference]: Finished difference. Result has 186 places, 279 transitions, 3286 flow [2023-11-17 16:02:34,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=2852, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3286, PETRI_PLACES=186, PETRI_TRANSITIONS=279} [2023-11-17 16:02:34,319 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 133 predicate places. [2023-11-17 16:02:34,319 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 279 transitions, 3286 flow [2023-11-17 16:02:34,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:34,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:34,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:34,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 16:02:34,319 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:34,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:34,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1988128979, now seen corresponding path program 19 times [2023-11-17 16:02:34,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:34,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765208139] [2023-11-17 16:02:34,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:34,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:34,518 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 16:02:34,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:34,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765208139] [2023-11-17 16:02:34,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765208139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:34,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:34,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 16:02:34,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375600254] [2023-11-17 16:02:34,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:34,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:02:34,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:34,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:02:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:02:34,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:34,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 279 transitions, 3286 flow. Second operand has 9 states, 9 states have (on average 125.11111111111111) internal successors, (1126), 9 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:34,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:34,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:34,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:40,003 INFO L124 PetriNetUnfolderBase]: 24573/42838 cut-off events. [2023-11-17 16:02:40,003 INFO L125 PetriNetUnfolderBase]: For 315999/318750 co-relation queries the response was YES. [2023-11-17 16:02:40,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200107 conditions, 42838 events. 24573/42838 cut-off events. For 315999/318750 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 368905 event pairs, 10435 based on Foata normal form. 350/42412 useless extension candidates. Maximal degree in co-relation 197047. Up to 28221 conditions per place. [2023-11-17 16:02:40,378 INFO L140 encePairwiseOnDemand]: 264/275 looper letters, 288 selfloop transitions, 73 changer transitions 2/410 dead transitions. [2023-11-17 16:02:40,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 410 transitions, 5137 flow [2023-11-17 16:02:40,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:02:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:02:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1236 transitions. [2023-11-17 16:02:40,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4993939393939394 [2023-11-17 16:02:40,379 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1236 transitions. [2023-11-17 16:02:40,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1236 transitions. [2023-11-17 16:02:40,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:40,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1236 transitions. [2023-11-17 16:02:40,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 137.33333333333334) internal successors, (1236), 9 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:40,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 275.0) internal successors, (2750), 10 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:40,383 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 275.0) internal successors, (2750), 10 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:40,383 INFO L175 Difference]: Start difference. First operand has 186 places, 279 transitions, 3286 flow. Second operand 9 states and 1236 transitions. [2023-11-17 16:02:40,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 410 transitions, 5137 flow [2023-11-17 16:02:42,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 410 transitions, 5065 flow, removed 36 selfloop flow, removed 0 redundant places. [2023-11-17 16:02:42,531 INFO L231 Difference]: Finished difference. Result has 198 places, 316 transitions, 3948 flow [2023-11-17 16:02:42,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3948, PETRI_PLACES=198, PETRI_TRANSITIONS=316} [2023-11-17 16:02:42,532 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2023-11-17 16:02:42,532 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 316 transitions, 3948 flow [2023-11-17 16:02:42,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.11111111111111) internal successors, (1126), 9 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:42,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:42,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:42,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 16:02:42,533 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:42,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1896145841, now seen corresponding path program 20 times [2023-11-17 16:02:42,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:42,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803782265] [2023-11-17 16:02:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:42,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:42,737 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 16:02:42,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:42,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803782265] [2023-11-17 16:02:42,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803782265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:42,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:42,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:02:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850129358] [2023-11-17 16:02:42,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:42,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:02:42,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:42,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:02:42,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:02:42,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:42,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 316 transitions, 3948 flow. Second operand has 8 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:42,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:42,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:42,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:48,540 INFO L124 PetriNetUnfolderBase]: 26890/46809 cut-off events. [2023-11-17 16:02:48,541 INFO L125 PetriNetUnfolderBase]: For 385848/389009 co-relation queries the response was YES. [2023-11-17 16:02:49,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224761 conditions, 46809 events. 26890/46809 cut-off events. For 385848/389009 co-relation queries the response was YES. Maximal size of possible extension queue 1537. Compared 407914 event pairs, 11641 based on Foata normal form. 422/46333 useless extension candidates. Maximal degree in co-relation 221324. Up to 32033 conditions per place. [2023-11-17 16:02:49,148 INFO L140 encePairwiseOnDemand]: 263/275 looper letters, 340 selfloop transitions, 49 changer transitions 16/452 dead transitions. [2023-11-17 16:02:49,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 452 transitions, 5890 flow [2023-11-17 16:02:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:02:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:02:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1248 transitions. [2023-11-17 16:02:49,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042424242424243 [2023-11-17 16:02:49,149 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1248 transitions. [2023-11-17 16:02:49,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1248 transitions. [2023-11-17 16:02:49,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:49,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1248 transitions. [2023-11-17 16:02:49,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 138.66666666666666) internal successors, (1248), 9 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:49,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 275.0) internal successors, (2750), 10 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:49,152 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 275.0) internal successors, (2750), 10 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:49,152 INFO L175 Difference]: Start difference. First operand has 198 places, 316 transitions, 3948 flow. Second operand 9 states and 1248 transitions. [2023-11-17 16:02:49,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 452 transitions, 5890 flow [2023-11-17 16:02:52,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 452 transitions, 5616 flow, removed 115 selfloop flow, removed 4 redundant places. [2023-11-17 16:02:52,039 INFO L231 Difference]: Finished difference. Result has 206 places, 329 transitions, 4095 flow [2023-11-17 16:02:52,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=3726, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4095, PETRI_PLACES=206, PETRI_TRANSITIONS=329} [2023-11-17 16:02:52,040 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 153 predicate places. [2023-11-17 16:02:52,040 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 329 transitions, 4095 flow [2023-11-17 16:02:52,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:52,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:52,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:52,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 16:02:52,040 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:02:52,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:52,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1627907055, now seen corresponding path program 21 times [2023-11-17 16:02:52,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:52,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413259681] [2023-11-17 16:02:52,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:52,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:52,236 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 16:02:52,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:52,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413259681] [2023-11-17 16:02:52,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413259681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:52,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:52,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 16:02:52,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347086377] [2023-11-17 16:02:52,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:52,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:02:52,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:02:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:02:52,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:02:52,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 329 transitions, 4095 flow. Second operand has 9 states, 9 states have (on average 125.11111111111111) internal successors, (1126), 9 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:52,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:52,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:02:52,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:58,639 INFO L124 PetriNetUnfolderBase]: 28289/48614 cut-off events. [2023-11-17 16:02:58,639 INFO L125 PetriNetUnfolderBase]: For 427487/432640 co-relation queries the response was YES. [2023-11-17 16:02:59,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241084 conditions, 48614 events. 28289/48614 cut-off events. For 427487/432640 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 419745 event pairs, 12065 based on Foata normal form. 479/47848 useless extension candidates. Maximal degree in co-relation 237610. Up to 33329 conditions per place. [2023-11-17 16:02:59,308 INFO L140 encePairwiseOnDemand]: 263/275 looper letters, 373 selfloop transitions, 59 changer transitions 3/482 dead transitions. [2023-11-17 16:02:59,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 482 transitions, 6252 flow [2023-11-17 16:02:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 16:02:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 16:02:59,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1388 transitions. [2023-11-17 16:02:59,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047272727272727 [2023-11-17 16:02:59,310 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1388 transitions. [2023-11-17 16:02:59,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1388 transitions. [2023-11-17 16:02:59,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:59,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1388 transitions. [2023-11-17 16:02:59,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 138.8) internal successors, (1388), 10 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:59,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 275.0) internal successors, (3025), 11 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:59,314 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 275.0) internal successors, (3025), 11 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:59,314 INFO L175 Difference]: Start difference. First operand has 206 places, 329 transitions, 4095 flow. Second operand 10 states and 1388 transitions. [2023-11-17 16:02:59,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 482 transitions, 6252 flow [2023-11-17 16:03:02,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 482 transitions, 6086 flow, removed 58 selfloop flow, removed 5 redundant places. [2023-11-17 16:03:02,292 INFO L231 Difference]: Finished difference. Result has 214 places, 348 transitions, 4448 flow [2023-11-17 16:03:02,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=3953, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4448, PETRI_PLACES=214, PETRI_TRANSITIONS=348} [2023-11-17 16:03:02,292 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2023-11-17 16:03:02,292 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 348 transitions, 4448 flow [2023-11-17 16:03:02,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 125.11111111111111) internal successors, (1126), 9 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:02,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:02,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:02,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 16:03:02,293 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:03:02,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:02,293 INFO L85 PathProgramCache]: Analyzing trace with hash -433652593, now seen corresponding path program 22 times [2023-11-17 16:03:02,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:02,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724885586] [2023-11-17 16:03:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:02,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:02,450 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 16:03:02,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:02,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724885586] [2023-11-17 16:03:02,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724885586] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:03:02,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:03:02,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 16:03:02,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871631678] [2023-11-17 16:03:02,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:03:02,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:03:02,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:02,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:03:02,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:03:02,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:03:02,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 348 transitions, 4448 flow. Second operand has 8 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:02,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:02,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:03:02,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:09,263 INFO L124 PetriNetUnfolderBase]: 29106/49413 cut-off events. [2023-11-17 16:03:09,263 INFO L125 PetriNetUnfolderBase]: For 452395/458166 co-relation queries the response was YES. [2023-11-17 16:03:09,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248272 conditions, 49413 events. 29106/49413 cut-off events. For 452395/458166 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 422904 event pairs, 13211 based on Foata normal form. 447/48482 useless extension candidates. Maximal degree in co-relation 244822. Up to 41394 conditions per place. [2023-11-17 16:03:09,781 INFO L140 encePairwiseOnDemand]: 263/275 looper letters, 330 selfloop transitions, 32 changer transitions 10/419 dead transitions. [2023-11-17 16:03:09,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 419 transitions, 5701 flow [2023-11-17 16:03:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:03:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:03:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1091 transitions. [2023-11-17 16:03:09,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959090909090909 [2023-11-17 16:03:09,783 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1091 transitions. [2023-11-17 16:03:09,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1091 transitions. [2023-11-17 16:03:09,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:09,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1091 transitions. [2023-11-17 16:03:09,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.375) internal successors, (1091), 8 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:09,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:09,786 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:09,786 INFO L175 Difference]: Start difference. First operand has 214 places, 348 transitions, 4448 flow. Second operand 8 states and 1091 transitions. [2023-11-17 16:03:09,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 419 transitions, 5701 flow [2023-11-17 16:03:12,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 419 transitions, 5562 flow, removed 63 selfloop flow, removed 2 redundant places. [2023-11-17 16:03:12,694 INFO L231 Difference]: Finished difference. Result has 222 places, 355 transitions, 4470 flow [2023-11-17 16:03:12,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=4313, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4470, PETRI_PLACES=222, PETRI_TRANSITIONS=355} [2023-11-17 16:03:12,694 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 169 predicate places. [2023-11-17 16:03:12,694 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 355 transitions, 4470 flow [2023-11-17 16:03:12,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.625) internal successors, (1005), 8 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:12,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:12,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:12,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 16:03:12,695 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 16:03:12,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:12,695 INFO L85 PathProgramCache]: Analyzing trace with hash -579737309, now seen corresponding path program 23 times [2023-11-17 16:03:12,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:12,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101755596] [2023-11-17 16:03:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:12,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:12,894 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 16:03:12,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:12,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101755596] [2023-11-17 16:03:12,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101755596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:03:12,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:03:12,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:03:12,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524405457] [2023-11-17 16:03:12,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:03:12,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:03:12,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:12,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:03:12,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:03:12,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 275 [2023-11-17 16:03:12,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 355 transitions, 4470 flow. Second operand has 6 states, 6 states have (on average 127.16666666666667) internal successors, (763), 6 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:12,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:12,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 275 [2023-11-17 16:03:12,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:19,269 INFO L124 PetriNetUnfolderBase]: 26485/45798 cut-off events. [2023-11-17 16:03:19,269 INFO L125 PetriNetUnfolderBase]: For 427206/432798 co-relation queries the response was YES. [2023-11-17 16:03:19,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231434 conditions, 45798 events. 26485/45798 cut-off events. For 427206/432798 co-relation queries the response was YES. Maximal size of possible extension queue 1358. Compared 393898 event pairs, 12569 based on Foata normal form. 648/45447 useless extension candidates. Maximal degree in co-relation 227868. Up to 37251 conditions per place. [2023-11-17 16:03:19,806 INFO L140 encePairwiseOnDemand]: 265/275 looper letters, 306 selfloop transitions, 41 changer transitions 21/415 dead transitions. [2023-11-17 16:03:19,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 415 transitions, 5708 flow [2023-11-17 16:03:19,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:03:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:03:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 828 transitions. [2023-11-17 16:03:19,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018181818181818 [2023-11-17 16:03:19,807 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 828 transitions. [2023-11-17 16:03:19,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 828 transitions. [2023-11-17 16:03:19,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:19,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 828 transitions. [2023-11-17 16:03:19,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:19,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:19,809 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:03:19,809 INFO L175 Difference]: Start difference. First operand has 222 places, 355 transitions, 4470 flow. Second operand 6 states and 828 transitions. [2023-11-17 16:03:19,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 415 transitions, 5708 flow