/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 07:34:40,289 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 07:34:40,357 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-VariableLbe.epf [2023-08-24 07:34:40,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 07:34:40,360 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 07:34:40,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 07:34:40,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 07:34:40,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 07:34:40,387 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 07:34:40,389 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 07:34:40,390 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 07:34:40,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 07:34:40,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 07:34:40,391 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 07:34:40,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 07:34:40,391 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 07:34:40,391 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 07:34:40,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 07:34:40,392 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 07:34:40,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 07:34:40,392 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 07:34:40,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 07:34:40,393 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 07:34:40,393 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 07:34:40,393 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 07:34:40,394 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 07:34:40,394 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 07:34:40,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:34:40,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 07:34:40,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 07:34:40,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 07:34:40,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 07:34:40,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 07:34:40,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 07:34:40,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 07:34:40,396 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 07:34:40,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 07:34:40,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 07:34:40,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 07:34:40,682 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 07:34:40,682 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 07:34:40,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-24 07:34:41,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 07:34:41,875 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 07:34:41,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-24 07:34:41,881 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1bded7c8/20f3a857ab874739a3a019c33759bcec/FLAG97a0147a3 [2023-08-24 07:34:41,894 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1bded7c8/20f3a857ab874739a3a019c33759bcec [2023-08-24 07:34:41,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 07:34:41,897 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 07:34:41,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 07:34:41,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 07:34:41,900 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 07:34:41,900 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:34:41" (1/1) ... [2023-08-24 07:34:41,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ad9761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:41, skipping insertion in model container [2023-08-24 07:34:41,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:34:41" (1/1) ... [2023-08-24 07:34:41,917 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 07:34:42,028 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/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-24 07:34:42,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:34:42,039 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 07:34:42,085 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/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-24 07:34:42,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:34:42,100 INFO L206 MainTranslator]: Completed translation [2023-08-24 07:34:42,101 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42 WrapperNode [2023-08-24 07:34:42,101 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 07:34:42,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 07:34:42,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 07:34:42,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 07:34:42,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (1/1) ... [2023-08-24 07:34:42,125 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (1/1) ... [2023-08-24 07:34:42,158 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 317 [2023-08-24 07:34:42,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 07:34:42,159 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 07:34:42,159 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 07:34:42,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 07:34:42,165 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (1/1) ... [2023-08-24 07:34:42,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (1/1) ... [2023-08-24 07:34:42,172 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (1/1) ... [2023-08-24 07:34:42,172 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (1/1) ... [2023-08-24 07:34:42,184 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (1/1) ... [2023-08-24 07:34:42,191 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (1/1) ... [2023-08-24 07:34:42,192 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (1/1) ... [2023-08-24 07:34:42,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (1/1) ... [2023-08-24 07:34:42,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 07:34:42,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 07:34:42,203 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 07:34:42,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 07:34:42,203 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (1/1) ... [2023-08-24 07:34:42,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:34:42,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:34:42,227 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) [2023-08-24 07:34:42,229 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 [2023-08-24 07:34:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 07:34:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 07:34:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 07:34:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 07:34:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 07:34:42,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 07:34:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 07:34:42,254 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 07:34:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 07:34:42,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 07:34:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 07:34:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 07:34:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 07:34:42,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 07:34:42,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 07:34:42,257 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 07:34:42,339 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 07:34:42,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 07:34:42,651 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 07:34:42,659 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 07:34:42,659 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-24 07:34:42,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:34:42 BoogieIcfgContainer [2023-08-24 07:34:42,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 07:34:42,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 07:34:42,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 07:34:42,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 07:34:42,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 07:34:41" (1/3) ... [2023-08-24 07:34:42,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782ba0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:34:42, skipping insertion in model container [2023-08-24 07:34:42,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:34:42" (2/3) ... [2023-08-24 07:34:42,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782ba0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:34:42, skipping insertion in model container [2023-08-24 07:34:42,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:34:42" (3/3) ... [2023-08-24 07:34:42,666 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-08-24 07:34:42,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 07:34:42,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 07:34:42,678 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 07:34:42,783 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 07:34:42,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 361 transitions, 746 flow [2023-08-24 07:34:42,980 INFO L124 PetriNetUnfolderBase]: 26/358 cut-off events. [2023-08-24 07:34:42,981 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:34:42,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 358 events. 26/358 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 809 event pairs, 0 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 269. Up to 2 conditions per place. [2023-08-24 07:34:42,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 361 transitions, 746 flow [2023-08-24 07:34:42,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 348 transitions, 714 flow [2023-08-24 07:34:42,999 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 07:34:43,011 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 348 transitions, 714 flow [2023-08-24 07:34:43,013 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 348 transitions, 714 flow [2023-08-24 07:34:43,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 348 transitions, 714 flow [2023-08-24 07:34:43,062 INFO L124 PetriNetUnfolderBase]: 26/348 cut-off events. [2023-08-24 07:34:43,062 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:34:43,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 348 events. 26/348 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 810 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 269. Up to 2 conditions per place. [2023-08-24 07:34:43,075 INFO L119 LiptonReduction]: Number of co-enabled transitions 28350 [2023-08-24 07:34:51,139 INFO L134 LiptonReduction]: Checked pairs total: 26347 [2023-08-24 07:34:51,139 INFO L136 LiptonReduction]: Total number of compositions: 413 [2023-08-24 07:34:51,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 07:34:51,160 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=LoopsAndPotentialCycles, 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;@699bdf93, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 07:34:51,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 07:34:51,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 07:34:51,169 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2023-08-24 07:34:51,169 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:34:51,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:34:51,170 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] [2023-08-24 07:34:51,171 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)] === [2023-08-24 07:34:51,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:34:51,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1738294033, now seen corresponding path program 1 times [2023-08-24 07:34:51,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:34:51,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457072406] [2023-08-24 07:34:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:51,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:34:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:34:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:34:51,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:34:51,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457072406] [2023-08-24 07:34:51,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457072406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:34:51,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:34:51,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 07:34:51,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775027841] [2023-08-24 07:34:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:34:51,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 07:34:51,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:34:51,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 07:34:51,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 07:34:51,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 774 [2023-08-24 07:34:51,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:51,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:34:51,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 774 [2023-08-24 07:34:51,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:34:51,594 INFO L124 PetriNetUnfolderBase]: 221/328 cut-off events. [2023-08-24 07:34:51,595 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-24 07:34:51,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 328 events. 221/328 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 779 event pairs, 138 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 534. Up to 328 conditions per place. [2023-08-24 07:34:51,596 INFO L140 encePairwiseOnDemand]: 771/774 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-24 07:34:51,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 118 flow [2023-08-24 07:34:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 07:34:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 07:34:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2023-08-24 07:34:51,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42850990525409133 [2023-08-24 07:34:51,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2023-08-24 07:34:51,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2023-08-24 07:34:51,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:34:51,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2023-08-24 07:34:51,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:51,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:51,628 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 774.0) internal successors, (3096), 4 states have internal predecessors, (3096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:51,629 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 995 transitions. [2023-08-24 07:34:51,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 118 flow [2023-08-24 07:34:51,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 07:34:51,633 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2023-08-24 07:34:51,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-08-24 07:34:51,637 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-08-24 07:34:51,637 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2023-08-24 07:34:51,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:51,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:34:51,639 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] [2023-08-24 07:34:51,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 07:34:51,639 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)] === [2023-08-24 07:34:51,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:34:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash -618938738, now seen corresponding path program 1 times [2023-08-24 07:34:51,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:34:51,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119254781] [2023-08-24 07:34:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:51,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:34:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:34:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:34:51,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:34:51,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119254781] [2023-08-24 07:34:51,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119254781] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:34:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092866553] [2023-08-24 07:34:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:51,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:34:51,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:34:51,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:34:51,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 07:34:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:34:51,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-24 07:34:51,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:34:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:34:52,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:34:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:34:52,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092866553] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:34:52,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:34:52,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-24 07:34:52,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399225813] [2023-08-24 07:34:52,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:34:52,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:34:52,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:34:52,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:34:52,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:34:52,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 774 [2023-08-24 07:34:52,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 326.85714285714283) internal successors, (2288), 7 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:52,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:34:52,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 774 [2023-08-24 07:34:52,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:34:52,129 INFO L124 PetriNetUnfolderBase]: 221/330 cut-off events. [2023-08-24 07:34:52,130 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 07:34:52,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 330 events. 221/330 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 780 event pairs, 138 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 673. Up to 328 conditions per place. [2023-08-24 07:34:52,131 INFO L140 encePairwiseOnDemand]: 771/774 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-08-24 07:34:52,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 128 flow [2023-08-24 07:34:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:34:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:34:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1644 transitions. [2023-08-24 07:34:52,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4248062015503876 [2023-08-24 07:34:52,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1644 transitions. [2023-08-24 07:34:52,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1644 transitions. [2023-08-24 07:34:52,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:34:52,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1644 transitions. [2023-08-24 07:34:52,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 328.8) internal successors, (1644), 5 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:52,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 774.0) internal successors, (4644), 6 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:52,147 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 774.0) internal successors, (4644), 6 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:52,151 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 1644 transitions. [2023-08-24 07:34:52,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 128 flow [2023-08-24 07:34:52,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 124 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 07:34:52,152 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 88 flow [2023-08-24 07:34:52,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-24 07:34:52,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-24 07:34:52,153 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 88 flow [2023-08-24 07:34:52,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 326.85714285714283) internal successors, (2288), 7 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:52,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:34:52,155 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:34:52,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-24 07:34:52,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:34:52,361 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)] === [2023-08-24 07:34:52,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:34:52,361 INFO L85 PathProgramCache]: Analyzing trace with hash 591529710, now seen corresponding path program 2 times [2023-08-24 07:34:52,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:34:52,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149596335] [2023-08-24 07:34:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:52,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:34:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:34:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:34:53,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:34:53,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149596335] [2023-08-24 07:34:53,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149596335] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:34:53,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:34:53,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:34:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569467798] [2023-08-24 07:34:53,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:34:53,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 07:34:53,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:34:53,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 07:34:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-24 07:34:53,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 774 [2023-08-24 07:34:53,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 264.625) internal successors, (2117), 8 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:53,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:34:53,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 774 [2023-08-24 07:34:53,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:34:53,511 INFO L124 PetriNetUnfolderBase]: 471/727 cut-off events. [2023-08-24 07:34:53,511 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-24 07:34:53,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 727 events. 471/727 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2541 event pairs, 138 based on Foata normal form. 1/532 useless extension candidates. Maximal degree in co-relation 1470. Up to 331 conditions per place. [2023-08-24 07:34:53,514 INFO L140 encePairwiseOnDemand]: 764/774 looper letters, 78 selfloop transitions, 9 changer transitions 3/90 dead transitions. [2023-08-24 07:34:53,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 90 transitions, 411 flow [2023-08-24 07:34:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:34:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:34:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1922 transitions. [2023-08-24 07:34:53,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3547434477667036 [2023-08-24 07:34:53,519 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1922 transitions. [2023-08-24 07:34:53,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1922 transitions. [2023-08-24 07:34:53,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:34:53,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1922 transitions. [2023-08-24 07:34:53,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.57142857142856) internal successors, (1922), 7 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:53,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:53,530 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:53,530 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 88 flow. Second operand 7 states and 1922 transitions. [2023-08-24 07:34:53,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 90 transitions, 411 flow [2023-08-24 07:34:53,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 90 transitions, 401 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-24 07:34:53,533 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 146 flow [2023-08-24 07:34:53,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=146, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-24 07:34:53,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2023-08-24 07:34:53,533 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 146 flow [2023-08-24 07:34:53,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 264.625) internal successors, (2117), 8 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:53,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:34:53,535 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:34:53,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 07:34:53,535 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)] === [2023-08-24 07:34:53,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:34:53,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2007808652, now seen corresponding path program 3 times [2023-08-24 07:34:53,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:34:53,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884484466] [2023-08-24 07:34:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:53,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:34:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:34:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:34:53,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:34:53,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884484466] [2023-08-24 07:34:53,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884484466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:34:53,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:34:53,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 07:34:53,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006231578] [2023-08-24 07:34:53,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:34:53,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 07:34:53,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:34:53,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 07:34:53,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 07:34:53,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 774 [2023-08-24 07:34:53,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:53,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:34:53,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 774 [2023-08-24 07:34:53,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:34:54,210 INFO L124 PetriNetUnfolderBase]: 860/1352 cut-off events. [2023-08-24 07:34:54,210 INFO L125 PetriNetUnfolderBase]: For 835/835 co-relation queries the response was YES. [2023-08-24 07:34:54,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3930 conditions, 1352 events. 860/1352 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5761 event pairs, 296 based on Foata normal form. 2/1040 useless extension candidates. Maximal degree in co-relation 3902. Up to 750 conditions per place. [2023-08-24 07:34:54,216 INFO L140 encePairwiseOnDemand]: 767/774 looper letters, 76 selfloop transitions, 10 changer transitions 14/100 dead transitions. [2023-08-24 07:34:54,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 100 transitions, 605 flow [2023-08-24 07:34:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:34:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:34:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1710 transitions. [2023-08-24 07:34:54,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682170542635659 [2023-08-24 07:34:54,219 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1710 transitions. [2023-08-24 07:34:54,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1710 transitions. [2023-08-24 07:34:54,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:34:54,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1710 transitions. [2023-08-24 07:34:54,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:54,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:54,229 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:54,229 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 146 flow. Second operand 6 states and 1710 transitions. [2023-08-24 07:34:54,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 100 transitions, 605 flow [2023-08-24 07:34:54,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 100 transitions, 585 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-24 07:34:54,237 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 240 flow [2023-08-24 07:34:54,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-08-24 07:34:54,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-08-24 07:34:54,239 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 240 flow [2023-08-24 07:34:54,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:54,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:34:54,240 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:34:54,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 07:34:54,240 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)] === [2023-08-24 07:34:54,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:34:54,241 INFO L85 PathProgramCache]: Analyzing trace with hash -446417566, now seen corresponding path program 4 times [2023-08-24 07:34:54,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:34:54,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144943604] [2023-08-24 07:34:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:34:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:34:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:34:54,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:34:54,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144943604] [2023-08-24 07:34:54,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144943604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:34:54,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:34:54,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 07:34:54,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435561317] [2023-08-24 07:34:54,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:34:54,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 07:34:54,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:34:54,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 07:34:54,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 07:34:54,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 774 [2023-08-24 07:34:54,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:54,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:34:54,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 774 [2023-08-24 07:34:54,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:34:55,051 INFO L124 PetriNetUnfolderBase]: 1286/2004 cut-off events. [2023-08-24 07:34:55,052 INFO L125 PetriNetUnfolderBase]: For 2913/2913 co-relation queries the response was YES. [2023-08-24 07:34:55,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7080 conditions, 2004 events. 1286/2004 cut-off events. For 2913/2913 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9185 event pairs, 490 based on Foata normal form. 3/1629 useless extension candidates. Maximal degree in co-relation 7048. Up to 1159 conditions per place. [2023-08-24 07:34:55,061 INFO L140 encePairwiseOnDemand]: 767/774 looper letters, 75 selfloop transitions, 13 changer transitions 12/100 dead transitions. [2023-08-24 07:34:55,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 100 transitions, 688 flow [2023-08-24 07:34:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:34:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:34:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1706 transitions. [2023-08-24 07:34:55,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3673557278208441 [2023-08-24 07:34:55,066 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1706 transitions. [2023-08-24 07:34:55,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1706 transitions. [2023-08-24 07:34:55,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:34:55,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1706 transitions. [2023-08-24 07:34:55,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.3333333333333) internal successors, (1706), 6 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:55,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:55,073 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:55,073 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 240 flow. Second operand 6 states and 1706 transitions. [2023-08-24 07:34:55,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 100 transitions, 688 flow [2023-08-24 07:34:55,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 100 transitions, 659 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-24 07:34:55,083 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 314 flow [2023-08-24 07:34:55,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=314, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-08-24 07:34:55,084 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2023-08-24 07:34:55,085 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 314 flow [2023-08-24 07:34:55,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:55,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:34:55,086 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:34:55,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 07:34:55,086 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)] === [2023-08-24 07:34:55,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:34:55,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1429845796, now seen corresponding path program 5 times [2023-08-24 07:34:55,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:34:55,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544814615] [2023-08-24 07:34:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:55,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:34:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:34:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:34:55,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:34:55,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544814615] [2023-08-24 07:34:55,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544814615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:34:55,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:34:55,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 07:34:55,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447832131] [2023-08-24 07:34:55,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:34:55,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 07:34:55,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:34:55,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 07:34:55,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 07:34:55,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 774 [2023-08-24 07:34:55,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:55,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:34:55,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 774 [2023-08-24 07:34:55,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:34:55,918 INFO L124 PetriNetUnfolderBase]: 1409/2188 cut-off events. [2023-08-24 07:34:55,918 INFO L125 PetriNetUnfolderBase]: For 5769/5769 co-relation queries the response was YES. [2023-08-24 07:34:55,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8741 conditions, 2188 events. 1409/2188 cut-off events. For 5769/5769 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10243 event pairs, 526 based on Foata normal form. 2/1902 useless extension candidates. Maximal degree in co-relation 8706. Up to 1160 conditions per place. [2023-08-24 07:34:55,931 INFO L140 encePairwiseOnDemand]: 767/774 looper letters, 78 selfloop transitions, 20 changer transitions 13/111 dead transitions. [2023-08-24 07:34:55,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 111 transitions, 845 flow [2023-08-24 07:34:55,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:34:55,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:34:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1713 transitions. [2023-08-24 07:34:55,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36886304909560724 [2023-08-24 07:34:55,936 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1713 transitions. [2023-08-24 07:34:55,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1713 transitions. [2023-08-24 07:34:55,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:34:55,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1713 transitions. [2023-08-24 07:34:55,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.5) internal successors, (1713), 6 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:55,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:55,945 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:55,945 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 314 flow. Second operand 6 states and 1713 transitions. [2023-08-24 07:34:55,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 111 transitions, 845 flow [2023-08-24 07:34:55,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 800 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-24 07:34:55,954 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 446 flow [2023-08-24 07:34:55,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=446, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-24 07:34:55,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2023-08-24 07:34:55,955 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 446 flow [2023-08-24 07:34:55,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:55,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:34:55,955 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:34:55,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 07:34:55,956 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)] === [2023-08-24 07:34:55,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:34:55,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1131820924, now seen corresponding path program 6 times [2023-08-24 07:34:55,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:34:55,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037434491] [2023-08-24 07:34:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:55,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:34:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:34:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:34:56,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:34:56,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037434491] [2023-08-24 07:34:56,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037434491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:34:56,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:34:56,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 07:34:56,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187614146] [2023-08-24 07:34:56,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:34:56,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 07:34:56,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:34:56,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 07:34:56,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 07:34:56,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 774 [2023-08-24 07:34:56,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:56,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:34:56,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 774 [2023-08-24 07:34:56,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:34:56,703 INFO L124 PetriNetUnfolderBase]: 1385/2164 cut-off events. [2023-08-24 07:34:56,703 INFO L125 PetriNetUnfolderBase]: For 7992/7992 co-relation queries the response was YES. [2023-08-24 07:34:56,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9226 conditions, 2164 events. 1385/2164 cut-off events. For 7992/7992 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10162 event pairs, 486 based on Foata normal form. 3/1879 useless extension candidates. Maximal degree in co-relation 9188. Up to 1191 conditions per place. [2023-08-24 07:34:56,716 INFO L140 encePairwiseOnDemand]: 767/774 looper letters, 74 selfloop transitions, 23 changer transitions 12/109 dead transitions. [2023-08-24 07:34:56,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 909 flow [2023-08-24 07:34:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:34:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:34:56,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2023-08-24 07:34:56,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36800172265288544 [2023-08-24 07:34:56,720 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1709 transitions. [2023-08-24 07:34:56,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1709 transitions. [2023-08-24 07:34:56,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:34:56,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1709 transitions. [2023-08-24 07:34:56,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.8333333333333) internal successors, (1709), 6 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:56,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:56,728 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:56,728 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 446 flow. Second operand 6 states and 1709 transitions. [2023-08-24 07:34:56,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 909 flow [2023-08-24 07:34:56,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 109 transitions, 895 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-24 07:34:56,739 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 589 flow [2023-08-24 07:34:56,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=589, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-08-24 07:34:56,740 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2023-08-24 07:34:56,740 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 589 flow [2023-08-24 07:34:56,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:56,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:34:56,741 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:34:56,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 07:34:56,741 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)] === [2023-08-24 07:34:56,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:34:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1026196966, now seen corresponding path program 7 times [2023-08-24 07:34:56,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:34:56,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341005649] [2023-08-24 07:34:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:56,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:34:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:34:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:34:57,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:34:57,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341005649] [2023-08-24 07:34:57,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341005649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:34:57,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:34:57,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 07:34:57,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972056862] [2023-08-24 07:34:57,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:34:57,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 07:34:57,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:34:57,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 07:34:57,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 07:34:57,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 774 [2023-08-24 07:34:57,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 589 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:57,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:34:57,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 774 [2023-08-24 07:34:57,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:34:57,491 INFO L124 PetriNetUnfolderBase]: 1357/2106 cut-off events. [2023-08-24 07:34:57,491 INFO L125 PetriNetUnfolderBase]: For 10148/10148 co-relation queries the response was YES. [2023-08-24 07:34:57,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9844 conditions, 2106 events. 1357/2106 cut-off events. For 10148/10148 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9752 event pairs, 482 based on Foata normal form. 3/1823 useless extension candidates. Maximal degree in co-relation 9802. Up to 1160 conditions per place. [2023-08-24 07:34:57,509 INFO L140 encePairwiseOnDemand]: 767/774 looper letters, 75 selfloop transitions, 24 changer transitions 13/112 dead transitions. [2023-08-24 07:34:57,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 112 transitions, 1026 flow [2023-08-24 07:34:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:34:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:34:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2023-08-24 07:34:57,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36800172265288544 [2023-08-24 07:34:57,512 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1709 transitions. [2023-08-24 07:34:57,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1709 transitions. [2023-08-24 07:34:57,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:34:57,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1709 transitions. [2023-08-24 07:34:57,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.8333333333333) internal successors, (1709), 6 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:57,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:57,521 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:57,521 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 589 flow. Second operand 6 states and 1709 transitions. [2023-08-24 07:34:57,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 112 transitions, 1026 flow [2023-08-24 07:34:57,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 112 transitions, 986 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-24 07:34:57,539 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 645 flow [2023-08-24 07:34:57,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=645, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2023-08-24 07:34:57,540 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2023-08-24 07:34:57,540 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 645 flow [2023-08-24 07:34:57,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:57,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:34:57,541 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:34:57,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 07:34:57,541 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)] === [2023-08-24 07:34:57,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:34:57,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1159526554, now seen corresponding path program 8 times [2023-08-24 07:34:57,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:34:57,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664932389] [2023-08-24 07:34:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:57,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:34:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:34:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:34:58,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:34:58,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664932389] [2023-08-24 07:34:58,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664932389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:34:58,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:34:58,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 07:34:58,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450426230] [2023-08-24 07:34:58,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:34:58,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 07:34:58,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:34:58,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 07:34:58,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-24 07:34:58,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 774 [2023-08-24 07:34:58,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 645 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:58,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:34:58,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 774 [2023-08-24 07:34:58,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:34:58,547 INFO L124 PetriNetUnfolderBase]: 1335/2054 cut-off events. [2023-08-24 07:34:58,547 INFO L125 PetriNetUnfolderBase]: For 10717/10717 co-relation queries the response was YES. [2023-08-24 07:34:58,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9688 conditions, 2054 events. 1335/2054 cut-off events. For 10717/10717 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9306 event pairs, 486 based on Foata normal form. 3/1773 useless extension candidates. Maximal degree in co-relation 9644. Up to 1191 conditions per place. [2023-08-24 07:34:58,562 INFO L140 encePairwiseOnDemand]: 767/774 looper letters, 74 selfloop transitions, 24 changer transitions 12/110 dead transitions. [2023-08-24 07:34:58,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 110 transitions, 1053 flow [2023-08-24 07:34:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:34:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:34:58,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1707 transitions. [2023-08-24 07:34:58,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36757105943152457 [2023-08-24 07:34:58,566 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1707 transitions. [2023-08-24 07:34:58,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1707 transitions. [2023-08-24 07:34:58,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:34:58,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1707 transitions. [2023-08-24 07:34:58,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.5) internal successors, (1707), 6 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:58,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:58,574 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 774.0) internal successors, (5418), 7 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:58,574 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 645 flow. Second operand 6 states and 1707 transitions. [2023-08-24 07:34:58,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 110 transitions, 1053 flow [2023-08-24 07:34:58,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 110 transitions, 1014 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-24 07:34:58,592 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 702 flow [2023-08-24 07:34:58,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=702, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2023-08-24 07:34:58,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2023-08-24 07:34:58,593 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 702 flow [2023-08-24 07:34:58,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:58,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:34:58,594 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:34:58,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 07:34:58,594 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)] === [2023-08-24 07:34:58,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:34:58,595 INFO L85 PathProgramCache]: Analyzing trace with hash 700599708, now seen corresponding path program 1 times [2023-08-24 07:34:58,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:34:58,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427113493] [2023-08-24 07:34:58,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:58,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:34:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:34:58,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:34:58,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:34:58,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427113493] [2023-08-24 07:34:58,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427113493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:34:58,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:34:58,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:34:58,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210250941] [2023-08-24 07:34:58,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:34:58,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:34:58,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:34:58,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:34:58,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:34:58,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:34:58,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 702 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:58,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:34:58,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:34:58,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:34:59,641 INFO L124 PetriNetUnfolderBase]: 1889/2903 cut-off events. [2023-08-24 07:34:59,641 INFO L125 PetriNetUnfolderBase]: For 17621/17621 co-relation queries the response was YES. [2023-08-24 07:34:59,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13840 conditions, 2903 events. 1889/2903 cut-off events. For 17621/17621 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14355 event pairs, 313 based on Foata normal form. 8/2487 useless extension candidates. Maximal degree in co-relation 13794. Up to 874 conditions per place. [2023-08-24 07:34:59,657 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 156 selfloop transitions, 36 changer transitions 0/192 dead transitions. [2023-08-24 07:34:59,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 192 transitions, 2141 flow [2023-08-24 07:34:59,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 07:34:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 07:34:59,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2258 transitions. [2023-08-24 07:34:59,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3646640826873385 [2023-08-24 07:34:59,662 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2258 transitions. [2023-08-24 07:34:59,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2258 transitions. [2023-08-24 07:34:59,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:34:59,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2258 transitions. [2023-08-24 07:34:59,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 282.25) internal successors, (2258), 8 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:59,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 774.0) internal successors, (6966), 9 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:59,671 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 774.0) internal successors, (6966), 9 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:59,671 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 702 flow. Second operand 8 states and 2258 transitions. [2023-08-24 07:34:59,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 192 transitions, 2141 flow [2023-08-24 07:34:59,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 192 transitions, 2001 flow, removed 33 selfloop flow, removed 3 redundant places. [2023-08-24 07:34:59,708 INFO L231 Difference]: Finished difference. Result has 88 places, 93 transitions, 1109 flow [2023-08-24 07:34:59,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1109, PETRI_PLACES=88, PETRI_TRANSITIONS=93} [2023-08-24 07:34:59,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 58 predicate places. [2023-08-24 07:34:59,709 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 93 transitions, 1109 flow [2023-08-24 07:34:59,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:34:59,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:34:59,710 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:34:59,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 07:34:59,710 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)] === [2023-08-24 07:34:59,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:34:59,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1780436482, now seen corresponding path program 2 times [2023-08-24 07:34:59,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:34:59,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001424126] [2023-08-24 07:34:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:34:59,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:34:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:00,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:00,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:00,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001424126] [2023-08-24 07:35:00,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001424126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:00,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:00,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:00,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264610404] [2023-08-24 07:35:00,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:00,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:00,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:00,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:00,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:00,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:00,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 93 transitions, 1109 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:00,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:00,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:00,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:00,570 INFO L124 PetriNetUnfolderBase]: 2083/3207 cut-off events. [2023-08-24 07:35:00,570 INFO L125 PetriNetUnfolderBase]: For 21718/21718 co-relation queries the response was YES. [2023-08-24 07:35:00,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16680 conditions, 3207 events. 2083/3207 cut-off events. For 21718/21718 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15998 event pairs, 222 based on Foata normal form. 4/3055 useless extension candidates. Maximal degree in co-relation 16629. Up to 1290 conditions per place. [2023-08-24 07:35:00,587 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 132 selfloop transitions, 37 changer transitions 0/169 dead transitions. [2023-08-24 07:35:00,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 169 transitions, 1926 flow [2023-08-24 07:35:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-08-24 07:35:00,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3695090439276486 [2023-08-24 07:35:00,591 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-08-24 07:35:00,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-08-24 07:35:00,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:00,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-08-24 07:35:00,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:00,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:00,599 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:00,599 INFO L175 Difference]: Start difference. First operand has 88 places, 93 transitions, 1109 flow. Second operand 7 states and 2002 transitions. [2023-08-24 07:35:00,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 169 transitions, 1926 flow [2023-08-24 07:35:00,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 169 transitions, 1916 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-24 07:35:00,646 INFO L231 Difference]: Finished difference. Result has 98 places, 101 transitions, 1318 flow [2023-08-24 07:35:00,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1318, PETRI_PLACES=98, PETRI_TRANSITIONS=101} [2023-08-24 07:35:00,647 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2023-08-24 07:35:00,647 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 101 transitions, 1318 flow [2023-08-24 07:35:00,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:00,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:00,648 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:00,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 07:35:00,648 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)] === [2023-08-24 07:35:00,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash -763823607, now seen corresponding path program 1 times [2023-08-24 07:35:00,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:00,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46261423] [2023-08-24 07:35:00,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:00,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:00,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:00,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46261423] [2023-08-24 07:35:00,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46261423] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:00,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:00,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:00,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083061969] [2023-08-24 07:35:00,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:00,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:00,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:00,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:00,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:00,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:00,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 101 transitions, 1318 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:00,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:00,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:00,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:01,569 INFO L124 PetriNetUnfolderBase]: 2843/4359 cut-off events. [2023-08-24 07:35:01,569 INFO L125 PetriNetUnfolderBase]: For 42998/42998 co-relation queries the response was YES. [2023-08-24 07:35:01,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24054 conditions, 4359 events. 2843/4359 cut-off events. For 42998/42998 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 23164 event pairs, 638 based on Foata normal form. 10/4123 useless extension candidates. Maximal degree in co-relation 23998. Up to 1375 conditions per place. [2023-08-24 07:35:01,589 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 212 selfloop transitions, 36 changer transitions 0/248 dead transitions. [2023-08-24 07:35:01,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 248 transitions, 3389 flow [2023-08-24 07:35:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:01,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2021 transitions. [2023-08-24 07:35:01,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2023-08-24 07:35:01,594 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2021 transitions. [2023-08-24 07:35:01,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2021 transitions. [2023-08-24 07:35:01,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:01,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2021 transitions. [2023-08-24 07:35:01,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.7142857142857) internal successors, (2021), 7 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:01,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:01,604 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:01,604 INFO L175 Difference]: Start difference. First operand has 98 places, 101 transitions, 1318 flow. Second operand 7 states and 2021 transitions. [2023-08-24 07:35:01,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 248 transitions, 3389 flow [2023-08-24 07:35:01,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 248 transitions, 3252 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-08-24 07:35:01,665 INFO L231 Difference]: Finished difference. Result has 107 places, 119 transitions, 1642 flow [2023-08-24 07:35:01,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1642, PETRI_PLACES=107, PETRI_TRANSITIONS=119} [2023-08-24 07:35:01,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2023-08-24 07:35:01,666 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 119 transitions, 1642 flow [2023-08-24 07:35:01,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:01,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:01,666 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:01,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 07:35:01,666 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)] === [2023-08-24 07:35:01,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:01,667 INFO L85 PathProgramCache]: Analyzing trace with hash 580435301, now seen corresponding path program 2 times [2023-08-24 07:35:01,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:01,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892661916] [2023-08-24 07:35:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:01,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:01,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892661916] [2023-08-24 07:35:01,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892661916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:01,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:01,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:01,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072928567] [2023-08-24 07:35:01,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:01,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:01,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:01,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:01,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:01,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 119 transitions, 1642 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:01,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:01,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:01,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:02,778 INFO L124 PetriNetUnfolderBase]: 3179/4894 cut-off events. [2023-08-24 07:35:02,778 INFO L125 PetriNetUnfolderBase]: For 49596/49596 co-relation queries the response was YES. [2023-08-24 07:35:02,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28376 conditions, 4894 events. 3179/4894 cut-off events. For 49596/49596 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 26924 event pairs, 404 based on Foata normal form. 10/4896 useless extension candidates. Maximal degree in co-relation 28315. Up to 2099 conditions per place. [2023-08-24 07:35:02,807 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 169 selfloop transitions, 46 changer transitions 0/215 dead transitions. [2023-08-24 07:35:02,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 215 transitions, 2923 flow [2023-08-24 07:35:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-08-24 07:35:02,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3708010335917313 [2023-08-24 07:35:02,811 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-08-24 07:35:02,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-08-24 07:35:02,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:02,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-08-24 07:35:02,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:02,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:02,819 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:02,819 INFO L175 Difference]: Start difference. First operand has 107 places, 119 transitions, 1642 flow. Second operand 7 states and 2009 transitions. [2023-08-24 07:35:02,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 215 transitions, 2923 flow [2023-08-24 07:35:02,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 215 transitions, 2857 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-08-24 07:35:02,931 INFO L231 Difference]: Finished difference. Result has 116 places, 132 transitions, 1958 flow [2023-08-24 07:35:02,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1958, PETRI_PLACES=116, PETRI_TRANSITIONS=132} [2023-08-24 07:35:02,932 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2023-08-24 07:35:02,932 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 132 transitions, 1958 flow [2023-08-24 07:35:02,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:02,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:02,932 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:02,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 07:35:02,933 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)] === [2023-08-24 07:35:02,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:02,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1458344558, now seen corresponding path program 3 times [2023-08-24 07:35:02,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:02,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318901288] [2023-08-24 07:35:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:02,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:03,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:03,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:03,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318901288] [2023-08-24 07:35:03,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318901288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:03,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:03,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:03,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092516741] [2023-08-24 07:35:03,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:03,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:03,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:03,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:03,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:03,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:03,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 132 transitions, 1958 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:03,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:03,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:03,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:03,965 INFO L124 PetriNetUnfolderBase]: 3203/4940 cut-off events. [2023-08-24 07:35:03,966 INFO L125 PetriNetUnfolderBase]: For 61728/61728 co-relation queries the response was YES. [2023-08-24 07:35:03,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29425 conditions, 4940 events. 3203/4940 cut-off events. For 61728/61728 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 27199 event pairs, 670 based on Foata normal form. 8/4940 useless extension candidates. Maximal degree in co-relation 29360. Up to 2359 conditions per place. [2023-08-24 07:35:03,995 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 213 selfloop transitions, 40 changer transitions 0/253 dead transitions. [2023-08-24 07:35:03,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 253 transitions, 3830 flow [2023-08-24 07:35:03,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2013 transitions. [2023-08-24 07:35:03,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715393133997785 [2023-08-24 07:35:03,999 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2013 transitions. [2023-08-24 07:35:03,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2013 transitions. [2023-08-24 07:35:04,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:04,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2013 transitions. [2023-08-24 07:35:04,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.57142857142856) internal successors, (2013), 7 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:04,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:04,006 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:04,006 INFO L175 Difference]: Start difference. First operand has 116 places, 132 transitions, 1958 flow. Second operand 7 states and 2013 transitions. [2023-08-24 07:35:04,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 253 transitions, 3830 flow [2023-08-24 07:35:04,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 253 transitions, 3729 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-08-24 07:35:04,108 INFO L231 Difference]: Finished difference. Result has 124 places, 140 transitions, 2141 flow [2023-08-24 07:35:04,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2141, PETRI_PLACES=124, PETRI_TRANSITIONS=140} [2023-08-24 07:35:04,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2023-08-24 07:35:04,109 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 140 transitions, 2141 flow [2023-08-24 07:35:04,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:04,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:04,109 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:04,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 07:35:04,109 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)] === [2023-08-24 07:35:04,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:04,110 INFO L85 PathProgramCache]: Analyzing trace with hash 862709063, now seen corresponding path program 3 times [2023-08-24 07:35:04,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:04,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032390391] [2023-08-24 07:35:04,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:04,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:04,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:04,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032390391] [2023-08-24 07:35:04,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032390391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:04,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:04,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:04,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779402993] [2023-08-24 07:35:04,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:04,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:04,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:04,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:04,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:04,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:04,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 140 transitions, 2141 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:04,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:04,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:04,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:05,213 INFO L124 PetriNetUnfolderBase]: 3485/5364 cut-off events. [2023-08-24 07:35:05,213 INFO L125 PetriNetUnfolderBase]: For 65327/65327 co-relation queries the response was YES. [2023-08-24 07:35:05,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32669 conditions, 5364 events. 3485/5364 cut-off events. For 65327/65327 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29708 event pairs, 556 based on Foata normal form. 4/5360 useless extension candidates. Maximal degree in co-relation 32600. Up to 2580 conditions per place. [2023-08-24 07:35:05,241 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 177 selfloop transitions, 53 changer transitions 0/230 dead transitions. [2023-08-24 07:35:05,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 230 transitions, 3366 flow [2023-08-24 07:35:05,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2015 transitions. [2023-08-24 07:35:05,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3719084533038021 [2023-08-24 07:35:05,244 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2015 transitions. [2023-08-24 07:35:05,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2015 transitions. [2023-08-24 07:35:05,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:05,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2015 transitions. [2023-08-24 07:35:05,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.85714285714283) internal successors, (2015), 7 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:05,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:05,268 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:05,268 INFO L175 Difference]: Start difference. First operand has 124 places, 140 transitions, 2141 flow. Second operand 7 states and 2015 transitions. [2023-08-24 07:35:05,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 230 transitions, 3366 flow [2023-08-24 07:35:05,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 230 transitions, 3242 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-24 07:35:05,391 INFO L231 Difference]: Finished difference. Result has 131 places, 150 transitions, 2388 flow [2023-08-24 07:35:05,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2388, PETRI_PLACES=131, PETRI_TRANSITIONS=150} [2023-08-24 07:35:05,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2023-08-24 07:35:05,392 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 150 transitions, 2388 flow [2023-08-24 07:35:05,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:05,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:05,393 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:05,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 07:35:05,393 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)] === [2023-08-24 07:35:05,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:05,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1412395042, now seen corresponding path program 4 times [2023-08-24 07:35:05,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:05,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234107761] [2023-08-24 07:35:05,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:05,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:05,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:05,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234107761] [2023-08-24 07:35:05,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234107761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:05,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:05,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:05,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436156169] [2023-08-24 07:35:05,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:05,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:05,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:05,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:05,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:05,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:05,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 150 transitions, 2388 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:05,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:05,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:05,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:06,519 INFO L124 PetriNetUnfolderBase]: 3479/5358 cut-off events. [2023-08-24 07:35:06,520 INFO L125 PetriNetUnfolderBase]: For 77215/77215 co-relation queries the response was YES. [2023-08-24 07:35:06,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33085 conditions, 5358 events. 3479/5358 cut-off events. For 77215/77215 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 29954 event pairs, 658 based on Foata normal form. 6/5356 useless extension candidates. Maximal degree in co-relation 33012. Up to 2645 conditions per place. [2023-08-24 07:35:06,551 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 210 selfloop transitions, 46 changer transitions 8/264 dead transitions. [2023-08-24 07:35:06,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 264 transitions, 4249 flow [2023-08-24 07:35:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:06,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:06,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2007 transitions. [2023-08-24 07:35:06,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704318936877076 [2023-08-24 07:35:06,555 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2007 transitions. [2023-08-24 07:35:06,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2007 transitions. [2023-08-24 07:35:06,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:06,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2007 transitions. [2023-08-24 07:35:06,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.7142857142857) internal successors, (2007), 7 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:06,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:06,562 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:06,562 INFO L175 Difference]: Start difference. First operand has 131 places, 150 transitions, 2388 flow. Second operand 7 states and 2007 transitions. [2023-08-24 07:35:06,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 264 transitions, 4249 flow [2023-08-24 07:35:06,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 264 transitions, 4122 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-08-24 07:35:06,690 INFO L231 Difference]: Finished difference. Result has 136 places, 152 transitions, 2421 flow [2023-08-24 07:35:06,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2421, PETRI_PLACES=136, PETRI_TRANSITIONS=152} [2023-08-24 07:35:06,690 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2023-08-24 07:35:06,690 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 152 transitions, 2421 flow [2023-08-24 07:35:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:06,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:06,691 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:06,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 07:35:06,691 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)] === [2023-08-24 07:35:06,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:06,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2043301734, now seen corresponding path program 5 times [2023-08-24 07:35:06,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:06,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925789508] [2023-08-24 07:35:06,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:06,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:07,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:07,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:07,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925789508] [2023-08-24 07:35:07,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925789508] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:35:07,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722501341] [2023-08-24 07:35:07,096 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 07:35:07,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:35:07,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:35:07,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:35:07,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 07:35:07,266 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 07:35:07,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:35:07,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 07:35:07,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:35:07,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:07,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:35:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:07,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722501341] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:35:07,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:35:07,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-24 07:35:07,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119718610] [2023-08-24 07:35:07,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:35:07,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 07:35:07,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:07,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 07:35:07,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-08-24 07:35:07,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:35:07,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 152 transitions, 2421 flow. Second operand has 17 states, 17 states have (on average 271.47058823529414) internal successors, (4615), 17 states have internal predecessors, (4615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:07,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:07,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:35:07,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:09,178 INFO L124 PetriNetUnfolderBase]: 4178/6511 cut-off events. [2023-08-24 07:35:09,178 INFO L125 PetriNetUnfolderBase]: For 90260/90260 co-relation queries the response was YES. [2023-08-24 07:35:09,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40668 conditions, 6511 events. 4178/6511 cut-off events. For 90260/90260 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 37997 event pairs, 1192 based on Foata normal form. 8/6511 useless extension candidates. Maximal degree in co-relation 40594. Up to 3457 conditions per place. [2023-08-24 07:35:09,258 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 227 selfloop transitions, 70 changer transitions 0/297 dead transitions. [2023-08-24 07:35:09,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 297 transitions, 4423 flow [2023-08-24 07:35:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 07:35:09,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 07:35:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2805 transitions. [2023-08-24 07:35:09,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3624031007751938 [2023-08-24 07:35:09,261 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2805 transitions. [2023-08-24 07:35:09,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2805 transitions. [2023-08-24 07:35:09,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:09,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2805 transitions. [2023-08-24 07:35:09,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 280.5) internal successors, (2805), 10 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:09,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 774.0) internal successors, (8514), 11 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:09,270 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 774.0) internal successors, (8514), 11 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:09,270 INFO L175 Difference]: Start difference. First operand has 136 places, 152 transitions, 2421 flow. Second operand 10 states and 2805 transitions. [2023-08-24 07:35:09,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 297 transitions, 4423 flow [2023-08-24 07:35:09,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 297 transitions, 4226 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-24 07:35:09,469 INFO L231 Difference]: Finished difference. Result has 146 places, 170 transitions, 2825 flow [2023-08-24 07:35:09,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2825, PETRI_PLACES=146, PETRI_TRANSITIONS=170} [2023-08-24 07:35:09,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2023-08-24 07:35:09,470 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 170 transitions, 2825 flow [2023-08-24 07:35:09,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 271.47058823529414) internal successors, (4615), 17 states have internal predecessors, (4615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:09,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:09,471 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:09,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 07:35:09,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-24 07:35:09,676 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)] === [2023-08-24 07:35:09,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1215047541, now seen corresponding path program 4 times [2023-08-24 07:35:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:09,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121015229] [2023-08-24 07:35:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:09,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:09,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:09,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:09,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121015229] [2023-08-24 07:35:09,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121015229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:09,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:09,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:09,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297337841] [2023-08-24 07:35:09,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:09,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:09,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:09,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:09,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:09,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:35:09,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 170 transitions, 2825 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:09,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:09,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:35:09,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:11,207 INFO L124 PetriNetUnfolderBase]: 4152/6477 cut-off events. [2023-08-24 07:35:11,207 INFO L125 PetriNetUnfolderBase]: For 108995/108995 co-relation queries the response was YES. [2023-08-24 07:35:11,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42855 conditions, 6477 events. 4152/6477 cut-off events. For 108995/108995 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 38478 event pairs, 343 based on Foata normal form. 4/6481 useless extension candidates. Maximal degree in co-relation 42776. Up to 2004 conditions per place. [2023-08-24 07:35:11,256 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 265 selfloop transitions, 98 changer transitions 2/365 dead transitions. [2023-08-24 07:35:11,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 365 transitions, 6230 flow [2023-08-24 07:35:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 07:35:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 07:35:11,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2521 transitions. [2023-08-24 07:35:11,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36190066035027274 [2023-08-24 07:35:11,259 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2521 transitions. [2023-08-24 07:35:11,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2521 transitions. [2023-08-24 07:35:11,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:11,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2521 transitions. [2023-08-24 07:35:11,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 280.1111111111111) internal successors, (2521), 9 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:11,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 774.0) internal successors, (7740), 10 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:11,266 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 774.0) internal successors, (7740), 10 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:11,266 INFO L175 Difference]: Start difference. First operand has 146 places, 170 transitions, 2825 flow. Second operand 9 states and 2521 transitions. [2023-08-24 07:35:11,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 365 transitions, 6230 flow [2023-08-24 07:35:11,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 365 transitions, 5896 flow, removed 82 selfloop flow, removed 3 redundant places. [2023-08-24 07:35:11,516 INFO L231 Difference]: Finished difference. Result has 153 places, 210 transitions, 3418 flow [2023-08-24 07:35:11,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=2584, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3418, PETRI_PLACES=153, PETRI_TRANSITIONS=210} [2023-08-24 07:35:11,517 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 123 predicate places. [2023-08-24 07:35:11,517 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 210 transitions, 3418 flow [2023-08-24 07:35:11,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:11,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:11,517 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:11,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 07:35:11,517 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)] === [2023-08-24 07:35:11,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash -598957511, now seen corresponding path program 5 times [2023-08-24 07:35:11,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:11,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068925339] [2023-08-24 07:35:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:11,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:11,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:11,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:11,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068925339] [2023-08-24 07:35:11,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068925339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:11,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:11,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:11,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954240108] [2023-08-24 07:35:11,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:11,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:11,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:11,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:11,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:11,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:35:11,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 210 transitions, 3418 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:11,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:11,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:35:11,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:13,070 INFO L124 PetriNetUnfolderBase]: 4523/7032 cut-off events. [2023-08-24 07:35:13,070 INFO L125 PetriNetUnfolderBase]: For 104084/104084 co-relation queries the response was YES. [2023-08-24 07:35:13,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46269 conditions, 7032 events. 4523/7032 cut-off events. For 104084/104084 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 41213 event pairs, 788 based on Foata normal form. 4/7036 useless extension candidates. Maximal degree in co-relation 46188. Up to 4320 conditions per place. [2023-08-24 07:35:13,112 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 263 selfloop transitions, 102 changer transitions 0/365 dead transitions. [2023-08-24 07:35:13,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 365 transitions, 6210 flow [2023-08-24 07:35:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:13,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1972 transitions. [2023-08-24 07:35:13,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3639719453672942 [2023-08-24 07:35:13,115 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1972 transitions. [2023-08-24 07:35:13,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1972 transitions. [2023-08-24 07:35:13,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:13,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1972 transitions. [2023-08-24 07:35:13,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.7142857142857) internal successors, (1972), 7 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:13,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:13,120 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:13,120 INFO L175 Difference]: Start difference. First operand has 153 places, 210 transitions, 3418 flow. Second operand 7 states and 1972 transitions. [2023-08-24 07:35:13,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 365 transitions, 6210 flow [2023-08-24 07:35:13,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 365 transitions, 5836 flow, removed 118 selfloop flow, removed 3 redundant places. [2023-08-24 07:35:13,434 INFO L231 Difference]: Finished difference. Result has 161 places, 259 transitions, 4460 flow [2023-08-24 07:35:13,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4460, PETRI_PLACES=161, PETRI_TRANSITIONS=259} [2023-08-24 07:35:13,435 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2023-08-24 07:35:13,435 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 259 transitions, 4460 flow [2023-08-24 07:35:13,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:13,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:13,435 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:13,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-24 07:35:13,435 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)] === [2023-08-24 07:35:13,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:13,436 INFO L85 PathProgramCache]: Analyzing trace with hash 266734039, now seen corresponding path program 6 times [2023-08-24 07:35:13,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:13,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730184289] [2023-08-24 07:35:13,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:13,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:13,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:13,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:13,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730184289] [2023-08-24 07:35:13,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730184289] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:13,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:13,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:13,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811745674] [2023-08-24 07:35:13,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:13,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:13,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:13,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:13,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:35:13,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 259 transitions, 4460 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:13,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:13,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:35:13,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:15,030 INFO L124 PetriNetUnfolderBase]: 4517/7014 cut-off events. [2023-08-24 07:35:15,031 INFO L125 PetriNetUnfolderBase]: For 110894/110894 co-relation queries the response was YES. [2023-08-24 07:35:15,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46478 conditions, 7014 events. 4517/7014 cut-off events. For 110894/110894 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 41793 event pairs, 361 based on Foata normal form. 4/7018 useless extension candidates. Maximal degree in co-relation 46392. Up to 2160 conditions per place. [2023-08-24 07:35:15,080 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 305 selfloop transitions, 132 changer transitions 0/437 dead transitions. [2023-08-24 07:35:15,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 437 transitions, 7789 flow [2023-08-24 07:35:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 07:35:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 07:35:15,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2527 transitions. [2023-08-24 07:35:15,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36276198679299454 [2023-08-24 07:35:15,083 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2527 transitions. [2023-08-24 07:35:15,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2527 transitions. [2023-08-24 07:35:15,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:15,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2527 transitions. [2023-08-24 07:35:15,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 280.77777777777777) internal successors, (2527), 9 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:15,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 774.0) internal successors, (7740), 10 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:15,089 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 774.0) internal successors, (7740), 10 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:15,089 INFO L175 Difference]: Start difference. First operand has 161 places, 259 transitions, 4460 flow. Second operand 9 states and 2527 transitions. [2023-08-24 07:35:15,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 437 transitions, 7789 flow [2023-08-24 07:35:15,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 437 transitions, 7591 flow, removed 99 selfloop flow, removed 0 redundant places. [2023-08-24 07:35:15,411 INFO L231 Difference]: Finished difference. Result has 170 places, 259 transitions, 4642 flow [2023-08-24 07:35:15,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=4372, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4642, PETRI_PLACES=170, PETRI_TRANSITIONS=259} [2023-08-24 07:35:15,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2023-08-24 07:35:15,411 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 259 transitions, 4642 flow [2023-08-24 07:35:15,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:15,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:15,412 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:15,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-24 07:35:15,412 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)] === [2023-08-24 07:35:15,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:15,412 INFO L85 PathProgramCache]: Analyzing trace with hash -812667550, now seen corresponding path program 6 times [2023-08-24 07:35:15,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:15,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79615241] [2023-08-24 07:35:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:15,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:15,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:15,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79615241] [2023-08-24 07:35:15,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79615241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:15,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:15,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:15,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279083280] [2023-08-24 07:35:15,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:15,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:15,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:15,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:15,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:15,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:15,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 259 transitions, 4642 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:15,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:15,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:15,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:17,024 INFO L124 PetriNetUnfolderBase]: 4491/6960 cut-off events. [2023-08-24 07:35:17,025 INFO L125 PetriNetUnfolderBase]: For 114210/114210 co-relation queries the response was YES. [2023-08-24 07:35:17,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47470 conditions, 6960 events. 4491/6960 cut-off events. For 114210/114210 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 40754 event pairs, 1012 based on Foata normal form. 6/6966 useless extension candidates. Maximal degree in co-relation 47382. Up to 3447 conditions per place. [2023-08-24 07:35:17,075 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 258 selfloop transitions, 108 changer transitions 6/372 dead transitions. [2023-08-24 07:35:17,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 372 transitions, 6761 flow [2023-08-24 07:35:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-08-24 07:35:17,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37024732373569585 [2023-08-24 07:35:17,093 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-08-24 07:35:17,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-08-24 07:35:17,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:17,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-08-24 07:35:17,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:17,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:17,103 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:17,104 INFO L175 Difference]: Start difference. First operand has 170 places, 259 transitions, 4642 flow. Second operand 7 states and 2006 transitions. [2023-08-24 07:35:17,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 372 transitions, 6761 flow [2023-08-24 07:35:17,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 372 transitions, 6560 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-24 07:35:17,449 INFO L231 Difference]: Finished difference. Result has 171 places, 257 transitions, 4617 flow [2023-08-24 07:35:17,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=4416, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4617, PETRI_PLACES=171, PETRI_TRANSITIONS=257} [2023-08-24 07:35:17,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2023-08-24 07:35:17,450 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 257 transitions, 4617 flow [2023-08-24 07:35:17,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:17,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:17,450 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:17,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-24 07:35:17,450 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)] === [2023-08-24 07:35:17,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:17,477 INFO L85 PathProgramCache]: Analyzing trace with hash 484457993, now seen corresponding path program 7 times [2023-08-24 07:35:17,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:17,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973972330] [2023-08-24 07:35:17,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:17,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:17,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:17,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973972330] [2023-08-24 07:35:17,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973972330] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:17,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:17,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:17,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176905278] [2023-08-24 07:35:17,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:17,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:17,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:17,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:17,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:17,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:17,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 257 transitions, 4617 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:17,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:17,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:17,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:18,884 INFO L124 PetriNetUnfolderBase]: 4498/6959 cut-off events. [2023-08-24 07:35:18,884 INFO L125 PetriNetUnfolderBase]: For 114001/114001 co-relation queries the response was YES. [2023-08-24 07:35:18,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47105 conditions, 6959 events. 4498/6959 cut-off events. For 114001/114001 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 40671 event pairs, 968 based on Foata normal form. 4/6963 useless extension candidates. Maximal degree in co-relation 47016. Up to 3071 conditions per place. [2023-08-24 07:35:18,934 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 269 selfloop transitions, 110 changer transitions 0/379 dead transitions. [2023-08-24 07:35:18,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 379 transitions, 6908 flow [2023-08-24 07:35:18,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-08-24 07:35:18,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709856035437431 [2023-08-24 07:35:18,943 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-08-24 07:35:18,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-08-24 07:35:18,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:18,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-08-24 07:35:18,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:18,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:18,951 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:18,951 INFO L175 Difference]: Start difference. First operand has 171 places, 257 transitions, 4617 flow. Second operand 7 states and 2010 transitions. [2023-08-24 07:35:18,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 379 transitions, 6908 flow [2023-08-24 07:35:19,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 379 transitions, 6620 flow, removed 39 selfloop flow, removed 6 redundant places. [2023-08-24 07:35:19,293 INFO L231 Difference]: Finished difference. Result has 170 places, 258 transitions, 4636 flow [2023-08-24 07:35:19,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=4352, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4636, PETRI_PLACES=170, PETRI_TRANSITIONS=258} [2023-08-24 07:35:19,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2023-08-24 07:35:19,294 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 258 transitions, 4636 flow [2023-08-24 07:35:19,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:19,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:19,295 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:19,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-24 07:35:19,295 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)] === [2023-08-24 07:35:19,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:19,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1120362324, now seen corresponding path program 7 times [2023-08-24 07:35:19,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:19,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750161895] [2023-08-24 07:35:19,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:19,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:19,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:19,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:19,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750161895] [2023-08-24 07:35:19,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750161895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:19,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:19,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:19,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584378867] [2023-08-24 07:35:19,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:19,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:19,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:19,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:19,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:19,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:35:19,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 258 transitions, 4636 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:19,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:19,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:35:19,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:20,927 INFO L124 PetriNetUnfolderBase]: 4596/7167 cut-off events. [2023-08-24 07:35:20,928 INFO L125 PetriNetUnfolderBase]: For 105162/105162 co-relation queries the response was YES. [2023-08-24 07:35:20,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46626 conditions, 7167 events. 4596/7167 cut-off events. For 105162/105162 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 42370 event pairs, 538 based on Foata normal form. 16/7183 useless extension candidates. Maximal degree in co-relation 46538. Up to 4371 conditions per place. [2023-08-24 07:35:20,979 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 326 selfloop transitions, 89 changer transitions 1/416 dead transitions. [2023-08-24 07:35:20,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 416 transitions, 7743 flow [2023-08-24 07:35:20,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:20,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:20,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1960 transitions. [2023-08-24 07:35:20,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36175710594315247 [2023-08-24 07:35:20,998 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1960 transitions. [2023-08-24 07:35:20,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1960 transitions. [2023-08-24 07:35:20,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:20,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1960 transitions. [2023-08-24 07:35:21,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.0) internal successors, (1960), 7 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:21,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:21,007 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:21,007 INFO L175 Difference]: Start difference. First operand has 170 places, 258 transitions, 4636 flow. Second operand 7 states and 1960 transitions. [2023-08-24 07:35:21,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 416 transitions, 7743 flow [2023-08-24 07:35:21,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 416 transitions, 7366 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-24 07:35:21,455 INFO L231 Difference]: Finished difference. Result has 175 places, 295 transitions, 5492 flow [2023-08-24 07:35:21,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5492, PETRI_PLACES=175, PETRI_TRANSITIONS=295} [2023-08-24 07:35:21,455 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2023-08-24 07:35:21,455 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 295 transitions, 5492 flow [2023-08-24 07:35:21,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:21,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:21,456 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:21,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-24 07:35:21,456 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:35:21,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:21,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1596591943, now seen corresponding path program 8 times [2023-08-24 07:35:21,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:21,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169037627] [2023-08-24 07:35:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:21,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:21,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:21,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:21,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169037627] [2023-08-24 07:35:21,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169037627] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:21,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:21,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:21,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339727271] [2023-08-24 07:35:21,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:21,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:21,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:21,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:21,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:21,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:35:21,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 295 transitions, 5492 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:21,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:21,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:35:21,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:23,448 INFO L124 PetriNetUnfolderBase]: 5448/8967 cut-off events. [2023-08-24 07:35:23,448 INFO L125 PetriNetUnfolderBase]: For 139354/139354 co-relation queries the response was YES. [2023-08-24 07:35:23,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57188 conditions, 8967 events. 5448/8967 cut-off events. For 139354/139354 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 60599 event pairs, 812 based on Foata normal form. 10/8977 useless extension candidates. Maximal degree in co-relation 57096. Up to 3656 conditions per place. [2023-08-24 07:35:23,501 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 285 selfloop transitions, 197 changer transitions 0/482 dead transitions. [2023-08-24 07:35:23,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 482 transitions, 9011 flow [2023-08-24 07:35:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 07:35:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 07:35:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2252 transitions. [2023-08-24 07:35:23,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3636950904392765 [2023-08-24 07:35:23,503 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2252 transitions. [2023-08-24 07:35:23,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2252 transitions. [2023-08-24 07:35:23,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:23,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2252 transitions. [2023-08-24 07:35:23,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.5) internal successors, (2252), 8 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:23,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 774.0) internal successors, (6966), 9 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:23,509 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 774.0) internal successors, (6966), 9 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:23,509 INFO L175 Difference]: Start difference. First operand has 175 places, 295 transitions, 5492 flow. Second operand 8 states and 2252 transitions. [2023-08-24 07:35:23,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 482 transitions, 9011 flow [2023-08-24 07:35:23,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 482 transitions, 8923 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-08-24 07:35:23,997 INFO L231 Difference]: Finished difference. Result has 186 places, 354 transitions, 7242 flow [2023-08-24 07:35:23,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=5423, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7242, PETRI_PLACES=186, PETRI_TRANSITIONS=354} [2023-08-24 07:35:23,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2023-08-24 07:35:23,997 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 354 transitions, 7242 flow [2023-08-24 07:35:23,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:23,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:23,998 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:23,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-24 07:35:23,998 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:35:23,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash 618267414, now seen corresponding path program 8 times [2023-08-24 07:35:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:23,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189928774] [2023-08-24 07:35:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:23,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:24,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:24,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189928774] [2023-08-24 07:35:24,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189928774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:24,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:24,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:24,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444088867] [2023-08-24 07:35:24,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:24,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:24,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:24,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:24,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:24,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:24,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 354 transitions, 7242 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:24,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:24,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:24,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:26,125 INFO L124 PetriNetUnfolderBase]: 5982/9963 cut-off events. [2023-08-24 07:35:26,125 INFO L125 PetriNetUnfolderBase]: For 168485/168485 co-relation queries the response was YES. [2023-08-24 07:35:26,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66241 conditions, 9963 events. 5982/9963 cut-off events. For 168485/168485 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 69092 event pairs, 1360 based on Foata normal form. 16/9979 useless extension candidates. Maximal degree in co-relation 66144. Up to 3143 conditions per place. [2023-08-24 07:35:26,204 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 350 selfloop transitions, 151 changer transitions 1/502 dead transitions. [2023-08-24 07:35:26,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 502 transitions, 10107 flow [2023-08-24 07:35:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2016 transitions. [2023-08-24 07:35:26,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37209302325581395 [2023-08-24 07:35:26,206 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2016 transitions. [2023-08-24 07:35:26,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2016 transitions. [2023-08-24 07:35:26,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:26,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2016 transitions. [2023-08-24 07:35:26,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:26,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:26,211 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:26,211 INFO L175 Difference]: Start difference. First operand has 186 places, 354 transitions, 7242 flow. Second operand 7 states and 2016 transitions. [2023-08-24 07:35:26,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 502 transitions, 10107 flow [2023-08-24 07:35:27,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 502 transitions, 9914 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-24 07:35:27,173 INFO L231 Difference]: Finished difference. Result has 193 places, 366 transitions, 7728 flow [2023-08-24 07:35:27,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=7068, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7728, PETRI_PLACES=193, PETRI_TRANSITIONS=366} [2023-08-24 07:35:27,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2023-08-24 07:35:27,174 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 366 transitions, 7728 flow [2023-08-24 07:35:27,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:27,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:27,175 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:27,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-24 07:35:27,175 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:35:27,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:27,175 INFO L85 PathProgramCache]: Analyzing trace with hash -534017563, now seen corresponding path program 9 times [2023-08-24 07:35:27,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:27,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735318277] [2023-08-24 07:35:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:27,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:27,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:27,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:27,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735318277] [2023-08-24 07:35:27,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735318277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:27,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:27,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:27,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48370787] [2023-08-24 07:35:27,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:27,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:27,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:27,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:27,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:27,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:35:27,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 366 transitions, 7728 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:27,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:27,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:35:27,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:29,685 INFO L124 PetriNetUnfolderBase]: 5978/9959 cut-off events. [2023-08-24 07:35:29,686 INFO L125 PetriNetUnfolderBase]: For 179407/179407 co-relation queries the response was YES. [2023-08-24 07:35:29,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67317 conditions, 9959 events. 5978/9959 cut-off events. For 179407/179407 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 69803 event pairs, 529 based on Foata normal form. 4/9963 useless extension candidates. Maximal degree in co-relation 67218. Up to 3912 conditions per place. [2023-08-24 07:35:29,759 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 327 selfloop transitions, 218 changer transitions 1/546 dead transitions. [2023-08-24 07:35:29,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 546 transitions, 11168 flow [2023-08-24 07:35:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 07:35:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 07:35:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3069 transitions. [2023-08-24 07:35:29,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36046511627906974 [2023-08-24 07:35:29,762 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3069 transitions. [2023-08-24 07:35:29,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3069 transitions. [2023-08-24 07:35:29,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:29,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3069 transitions. [2023-08-24 07:35:29,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 279.0) internal successors, (3069), 11 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:29,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 774.0) internal successors, (9288), 12 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:29,769 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 774.0) internal successors, (9288), 12 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:29,769 INFO L175 Difference]: Start difference. First operand has 193 places, 366 transitions, 7728 flow. Second operand 11 states and 3069 transitions. [2023-08-24 07:35:29,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 546 transitions, 11168 flow [2023-08-24 07:35:30,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 546 transitions, 10833 flow, removed 54 selfloop flow, removed 3 redundant places. [2023-08-24 07:35:30,728 INFO L231 Difference]: Finished difference. Result has 202 places, 385 transitions, 8277 flow [2023-08-24 07:35:30,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=7374, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8277, PETRI_PLACES=202, PETRI_TRANSITIONS=385} [2023-08-24 07:35:30,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2023-08-24 07:35:30,729 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 385 transitions, 8277 flow [2023-08-24 07:35:30,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:30,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:30,730 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:30,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-24 07:35:30,730 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:35:30,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:30,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1025855280, now seen corresponding path program 9 times [2023-08-24 07:35:30,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:30,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783294477] [2023-08-24 07:35:30,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:30,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:30,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:31,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:31,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783294477] [2023-08-24 07:35:31,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783294477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:31,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:31,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 07:35:31,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076230612] [2023-08-24 07:35:31,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:31,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 07:35:31,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 07:35:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-24 07:35:31,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:35:31,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 385 transitions, 8277 flow. Second operand has 8 states, 8 states have (on average 271.75) internal successors, (2174), 8 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:31,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:31,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:35:31,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:33,634 INFO L124 PetriNetUnfolderBase]: 6475/11214 cut-off events. [2023-08-24 07:35:33,634 INFO L125 PetriNetUnfolderBase]: For 197346/197346 co-relation queries the response was YES. [2023-08-24 07:35:33,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75376 conditions, 11214 events. 6475/11214 cut-off events. For 197346/197346 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 84293 event pairs, 543 based on Foata normal form. 16/11230 useless extension candidates. Maximal degree in co-relation 75276. Up to 3139 conditions per place. [2023-08-24 07:35:33,724 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 338 selfloop transitions, 320 changer transitions 1/659 dead transitions. [2023-08-24 07:35:33,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 659 transitions, 13787 flow [2023-08-24 07:35:33,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 07:35:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 07:35:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3080 transitions. [2023-08-24 07:35:33,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36175710594315247 [2023-08-24 07:35:33,728 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3080 transitions. [2023-08-24 07:35:33,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3080 transitions. [2023-08-24 07:35:33,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:33,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3080 transitions. [2023-08-24 07:35:33,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 280.0) internal successors, (3080), 11 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:33,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 774.0) internal successors, (9288), 12 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:33,736 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 774.0) internal successors, (9288), 12 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:33,736 INFO L175 Difference]: Start difference. First operand has 202 places, 385 transitions, 8277 flow. Second operand 11 states and 3080 transitions. [2023-08-24 07:35:33,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 659 transitions, 13787 flow [2023-08-24 07:35:34,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 659 transitions, 13485 flow, removed 40 selfloop flow, removed 3 redundant places. [2023-08-24 07:35:34,976 INFO L231 Difference]: Finished difference. Result has 214 places, 518 transitions, 11672 flow [2023-08-24 07:35:34,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=8049, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11672, PETRI_PLACES=214, PETRI_TRANSITIONS=518} [2023-08-24 07:35:34,977 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2023-08-24 07:35:34,977 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 518 transitions, 11672 flow [2023-08-24 07:35:34,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 271.75) internal successors, (2174), 8 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:34,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:34,977 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:34,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-24 07:35:34,978 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:35:34,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:34,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2007691590, now seen corresponding path program 10 times [2023-08-24 07:35:34,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:34,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569205514] [2023-08-24 07:35:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:34,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:35,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:35,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569205514] [2023-08-24 07:35:35,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569205514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:35,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:35,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:35,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858374824] [2023-08-24 07:35:35,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:35,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:35,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:35,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:35,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:35,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:35:35,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 518 transitions, 11672 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:35,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:35,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:35:35,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:38,112 INFO L124 PetriNetUnfolderBase]: 6438/11141 cut-off events. [2023-08-24 07:35:38,113 INFO L125 PetriNetUnfolderBase]: For 233796/233796 co-relation queries the response was YES. [2023-08-24 07:35:38,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80876 conditions, 11141 events. 6438/11141 cut-off events. For 233796/233796 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 83480 event pairs, 571 based on Foata normal form. 12/11153 useless extension candidates. Maximal degree in co-relation 80771. Up to 3890 conditions per place. [2023-08-24 07:35:38,226 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 379 selfloop transitions, 264 changer transitions 1/644 dead transitions. [2023-08-24 07:35:38,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 644 transitions, 14603 flow [2023-08-24 07:35:38,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 07:35:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 07:35:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2519 transitions. [2023-08-24 07:35:38,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36161355153603214 [2023-08-24 07:35:38,228 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2519 transitions. [2023-08-24 07:35:38,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2519 transitions. [2023-08-24 07:35:38,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:38,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2519 transitions. [2023-08-24 07:35:38,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 279.8888888888889) internal successors, (2519), 9 states have internal predecessors, (2519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:38,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 774.0) internal successors, (7740), 10 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:38,234 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 774.0) internal successors, (7740), 10 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:38,234 INFO L175 Difference]: Start difference. First operand has 214 places, 518 transitions, 11672 flow. Second operand 9 states and 2519 transitions. [2023-08-24 07:35:38,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 644 transitions, 14603 flow [2023-08-24 07:35:40,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 644 transitions, 13938 flow, removed 147 selfloop flow, removed 4 redundant places. [2023-08-24 07:35:40,121 INFO L231 Difference]: Finished difference. Result has 219 places, 520 transitions, 11626 flow [2023-08-24 07:35:40,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=10994, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11626, PETRI_PLACES=219, PETRI_TRANSITIONS=520} [2023-08-24 07:35:40,122 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2023-08-24 07:35:40,122 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 520 transitions, 11626 flow [2023-08-24 07:35:40,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:40,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:40,123 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:40,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-24 07:35:40,123 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:35:40,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1840220681, now seen corresponding path program 10 times [2023-08-24 07:35:40,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:40,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287381971] [2023-08-24 07:35:40,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:40,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:40,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:40,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287381971] [2023-08-24 07:35:40,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287381971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:40,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:40,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:40,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160406375] [2023-08-24 07:35:40,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:40,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:40,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:40,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:40,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:40,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:35:40,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 520 transitions, 11626 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:40,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:40,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:35:40,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:43,072 INFO L124 PetriNetUnfolderBase]: 6425/11110 cut-off events. [2023-08-24 07:35:43,072 INFO L125 PetriNetUnfolderBase]: For 223347/223347 co-relation queries the response was YES. [2023-08-24 07:35:43,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79669 conditions, 11110 events. 6425/11110 cut-off events. For 223347/223347 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 83477 event pairs, 688 based on Foata normal form. 4/11114 useless extension candidates. Maximal degree in co-relation 79565. Up to 4303 conditions per place. [2023-08-24 07:35:43,156 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 378 selfloop transitions, 279 changer transitions 1/658 dead transitions. [2023-08-24 07:35:43,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 658 transitions, 14743 flow [2023-08-24 07:35:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 07:35:43,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 07:35:43,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2796 transitions. [2023-08-24 07:35:43,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3612403100775194 [2023-08-24 07:35:43,159 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2796 transitions. [2023-08-24 07:35:43,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2796 transitions. [2023-08-24 07:35:43,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:43,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2796 transitions. [2023-08-24 07:35:43,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 279.6) internal successors, (2796), 10 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:43,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 774.0) internal successors, (8514), 11 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:43,165 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 774.0) internal successors, (8514), 11 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:43,165 INFO L175 Difference]: Start difference. First operand has 219 places, 520 transitions, 11626 flow. Second operand 10 states and 2796 transitions. [2023-08-24 07:35:43,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 658 transitions, 14743 flow [2023-08-24 07:35:44,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 658 transitions, 14260 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-24 07:35:44,494 INFO L231 Difference]: Finished difference. Result has 223 places, 517 transitions, 11683 flow [2023-08-24 07:35:44,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=11140, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11683, PETRI_PLACES=223, PETRI_TRANSITIONS=517} [2023-08-24 07:35:44,494 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2023-08-24 07:35:44,494 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 517 transitions, 11683 flow [2023-08-24 07:35:44,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:44,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:44,495 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:44,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-24 07:35:44,495 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:35:44,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash -232602718, now seen corresponding path program 11 times [2023-08-24 07:35:44,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:44,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025552707] [2023-08-24 07:35:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:44,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:44,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:44,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025552707] [2023-08-24 07:35:44,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025552707] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:35:44,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388258462] [2023-08-24 07:35:44,734 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 07:35:44,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:35:44,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:35:44,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:35:44,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 07:35:44,888 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 07:35:44,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:35:44,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 07:35:44,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:35:44,965 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:44,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:35:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:45,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388258462] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:35:45,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:35:45,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-24 07:35:45,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003815053] [2023-08-24 07:35:45,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:35:45,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 07:35:45,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:45,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 07:35:45,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-08-24 07:35:45,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:45,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 517 transitions, 11683 flow. Second operand has 15 states, 15 states have (on average 277.53333333333336) internal successors, (4163), 15 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:45,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:45,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:45,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:47,830 INFO L124 PetriNetUnfolderBase]: 6410/11077 cut-off events. [2023-08-24 07:35:47,830 INFO L125 PetriNetUnfolderBase]: For 222025/222025 co-relation queries the response was YES. [2023-08-24 07:35:47,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80522 conditions, 11077 events. 6410/11077 cut-off events. For 222025/222025 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 82279 event pairs, 1522 based on Foata normal form. 8/11085 useless extension candidates. Maximal degree in co-relation 80417. Up to 5374 conditions per place. [2023-08-24 07:35:47,939 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 368 selfloop transitions, 254 changer transitions 0/622 dead transitions. [2023-08-24 07:35:47,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 622 transitions, 14172 flow [2023-08-24 07:35:47,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:47,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-08-24 07:35:47,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709856035437431 [2023-08-24 07:35:47,942 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-08-24 07:35:47,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-08-24 07:35:47,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:47,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-08-24 07:35:47,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:47,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:47,946 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:47,946 INFO L175 Difference]: Start difference. First operand has 223 places, 517 transitions, 11683 flow. Second operand 7 states and 2010 transitions. [2023-08-24 07:35:47,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 622 transitions, 14172 flow [2023-08-24 07:35:49,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 622 transitions, 13637 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-24 07:35:49,337 INFO L231 Difference]: Finished difference. Result has 223 places, 515 transitions, 11637 flow [2023-08-24 07:35:49,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=11121, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11637, PETRI_PLACES=223, PETRI_TRANSITIONS=515} [2023-08-24 07:35:49,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2023-08-24 07:35:49,337 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 515 transitions, 11637 flow [2023-08-24 07:35:49,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 277.53333333333336) internal successors, (4163), 15 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:49,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:49,338 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:49,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 07:35:49,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:35:49,542 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:35:49,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:49,542 INFO L85 PathProgramCache]: Analyzing trace with hash -132709850, now seen corresponding path program 12 times [2023-08-24 07:35:49,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:49,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669441348] [2023-08-24 07:35:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:49,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:49,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:49,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:49,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669441348] [2023-08-24 07:35:49,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669441348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:49,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:49,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:49,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004160192] [2023-08-24 07:35:49,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:49,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:49,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:49,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:49,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:49,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 515 transitions, 11637 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:49,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:49,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:49,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:52,313 INFO L124 PetriNetUnfolderBase]: 6464/11215 cut-off events. [2023-08-24 07:35:52,313 INFO L125 PetriNetUnfolderBase]: For 225520/225520 co-relation queries the response was YES. [2023-08-24 07:35:52,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80037 conditions, 11215 events. 6464/11215 cut-off events. For 225520/225520 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 83850 event pairs, 1806 based on Foata normal form. 6/11221 useless extension candidates. Maximal degree in co-relation 79931. Up to 7123 conditions per place. [2023-08-24 07:35:52,393 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 375 selfloop transitions, 269 changer transitions 9/653 dead transitions. [2023-08-24 07:35:52,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 653 transitions, 14864 flow [2023-08-24 07:35:52,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-08-24 07:35:52,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3713547434477667 [2023-08-24 07:35:52,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-08-24 07:35:52,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-08-24 07:35:52,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:52,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-08-24 07:35:52,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:52,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:52,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:52,400 INFO L175 Difference]: Start difference. First operand has 223 places, 515 transitions, 11637 flow. Second operand 7 states and 2012 transitions. [2023-08-24 07:35:52,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 653 transitions, 14864 flow [2023-08-24 07:35:53,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 653 transitions, 14307 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-24 07:35:53,644 INFO L231 Difference]: Finished difference. Result has 228 places, 551 transitions, 12532 flow [2023-08-24 07:35:53,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=11139, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12532, PETRI_PLACES=228, PETRI_TRANSITIONS=551} [2023-08-24 07:35:53,645 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2023-08-24 07:35:53,645 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 551 transitions, 12532 flow [2023-08-24 07:35:53,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:53,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:53,645 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:53,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-24 07:35:53,646 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:35:53,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash 31454129, now seen corresponding path program 11 times [2023-08-24 07:35:53,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:53,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66571113] [2023-08-24 07:35:53,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:53,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:53,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:53,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66571113] [2023-08-24 07:35:53,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66571113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:53,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:53,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:53,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411114632] [2023-08-24 07:35:53,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:53,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:53,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:53,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:53,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:53,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:53,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 551 transitions, 12532 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:53,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:53,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:53,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:35:56,592 INFO L124 PetriNetUnfolderBase]: 6443/11160 cut-off events. [2023-08-24 07:35:56,592 INFO L125 PetriNetUnfolderBase]: For 220967/220967 co-relation queries the response was YES. [2023-08-24 07:35:56,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80357 conditions, 11160 events. 6443/11160 cut-off events. For 220967/220967 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 83217 event pairs, 1752 based on Foata normal form. 8/11168 useless extension candidates. Maximal degree in co-relation 80248. Up to 4631 conditions per place. [2023-08-24 07:35:56,686 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 411 selfloop transitions, 278 changer transitions 0/689 dead transitions. [2023-08-24 07:35:56,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 689 transitions, 15742 flow [2023-08-24 07:35:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:35:56,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:35:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2022 transitions. [2023-08-24 07:35:56,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37320044296788485 [2023-08-24 07:35:56,689 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2022 transitions. [2023-08-24 07:35:56,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2022 transitions. [2023-08-24 07:35:56,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:35:56,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2022 transitions. [2023-08-24 07:35:56,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.85714285714283) internal successors, (2022), 7 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:56,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:56,693 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:56,693 INFO L175 Difference]: Start difference. First operand has 228 places, 551 transitions, 12532 flow. Second operand 7 states and 2022 transitions. [2023-08-24 07:35:56,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 689 transitions, 15742 flow [2023-08-24 07:35:58,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 689 transitions, 15518 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-24 07:35:58,057 INFO L231 Difference]: Finished difference. Result has 232 places, 561 transitions, 13122 flow [2023-08-24 07:35:58,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=12314, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13122, PETRI_PLACES=232, PETRI_TRANSITIONS=561} [2023-08-24 07:35:58,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2023-08-24 07:35:58,058 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 561 transitions, 13122 flow [2023-08-24 07:35:58,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:58,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:35:58,058 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:35:58,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-24 07:35:58,059 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:35:58,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:35:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1094731326, now seen corresponding path program 13 times [2023-08-24 07:35:58,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:35:58,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182321444] [2023-08-24 07:35:58,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:35:58,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:35:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:35:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:35:58,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:35:58,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182321444] [2023-08-24 07:35:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182321444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:35:58,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:35:58,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:35:58,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340655655] [2023-08-24 07:35:58,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:35:58,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:35:58,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:35:58,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:35:58,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:35:58,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:35:58,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 561 transitions, 13122 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:35:58,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:35:58,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:35:58,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:00,987 INFO L124 PetriNetUnfolderBase]: 6437/11154 cut-off events. [2023-08-24 07:36:00,987 INFO L125 PetriNetUnfolderBase]: For 233253/233253 co-relation queries the response was YES. [2023-08-24 07:36:01,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81119 conditions, 11154 events. 6437/11154 cut-off events. For 233253/233253 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 83165 event pairs, 1820 based on Foata normal form. 6/11160 useless extension candidates. Maximal degree in co-relation 81010. Up to 7090 conditions per place. [2023-08-24 07:36:01,087 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 386 selfloop transitions, 274 changer transitions 8/668 dead transitions. [2023-08-24 07:36:01,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 668 transitions, 15656 flow [2023-08-24 07:36:01,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:36:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:36:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2016 transitions. [2023-08-24 07:36:01,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37209302325581395 [2023-08-24 07:36:01,089 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2016 transitions. [2023-08-24 07:36:01,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2016 transitions. [2023-08-24 07:36:01,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:01,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2016 transitions. [2023-08-24 07:36:01,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:01,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:01,093 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:01,093 INFO L175 Difference]: Start difference. First operand has 232 places, 561 transitions, 13122 flow. Second operand 7 states and 2016 transitions. [2023-08-24 07:36:01,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 668 transitions, 15656 flow [2023-08-24 07:36:02,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 668 transitions, 15040 flow, removed 54 selfloop flow, removed 3 redundant places. [2023-08-24 07:36:02,586 INFO L231 Difference]: Finished difference. Result has 238 places, 566 transitions, 13285 flow [2023-08-24 07:36:02,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=12506, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13285, PETRI_PLACES=238, PETRI_TRANSITIONS=566} [2023-08-24 07:36:02,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2023-08-24 07:36:02,587 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 566 transitions, 13285 flow [2023-08-24 07:36:02,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:02,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:02,587 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:02,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-24 07:36:02,587 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:02,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:02,588 INFO L85 PathProgramCache]: Analyzing trace with hash -709179881, now seen corresponding path program 12 times [2023-08-24 07:36:02,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:02,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088707788] [2023-08-24 07:36:02,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:02,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:36:02,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:36:02,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:36:02,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088707788] [2023-08-24 07:36:02,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088707788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:36:02,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:36:02,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:36:02,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976030117] [2023-08-24 07:36:02,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:36:02,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:36:02,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:36:02,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:36:02,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:36:02,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:36:02,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 566 transitions, 13285 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:02,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:36:02,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:36:02,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:05,494 INFO L124 PetriNetUnfolderBase]: 6416/11113 cut-off events. [2023-08-24 07:36:05,494 INFO L125 PetriNetUnfolderBase]: For 227903/227903 co-relation queries the response was YES. [2023-08-24 07:36:05,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80758 conditions, 11113 events. 6416/11113 cut-off events. For 227903/227903 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 82664 event pairs, 1830 based on Foata normal form. 20/11133 useless extension candidates. Maximal degree in co-relation 80646. Up to 4631 conditions per place. [2023-08-24 07:36:05,597 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 457 selfloop transitions, 244 changer transitions 0/701 dead transitions. [2023-08-24 07:36:05,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 701 transitions, 16453 flow [2023-08-24 07:36:05,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:36:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:36:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2020 transitions. [2023-08-24 07:36:05,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3728313030638612 [2023-08-24 07:36:05,599 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2020 transitions. [2023-08-24 07:36:05,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2020 transitions. [2023-08-24 07:36:05,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:05,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2020 transitions. [2023-08-24 07:36:05,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.57142857142856) internal successors, (2020), 7 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:05,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:05,603 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:05,603 INFO L175 Difference]: Start difference. First operand has 238 places, 566 transitions, 13285 flow. Second operand 7 states and 2020 transitions. [2023-08-24 07:36:05,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 701 transitions, 16453 flow [2023-08-24 07:36:07,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 701 transitions, 16016 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-24 07:36:07,123 INFO L231 Difference]: Finished difference. Result has 243 places, 580 transitions, 13769 flow [2023-08-24 07:36:07,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=12850, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13769, PETRI_PLACES=243, PETRI_TRANSITIONS=580} [2023-08-24 07:36:07,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2023-08-24 07:36:07,124 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 580 transitions, 13769 flow [2023-08-24 07:36:07,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:07,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:07,124 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:07,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-24 07:36:07,124 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:07,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1823468077, now seen corresponding path program 13 times [2023-08-24 07:36:07,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:07,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222789458] [2023-08-24 07:36:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:07,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:36:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:36:07,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:36:07,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222789458] [2023-08-24 07:36:07,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222789458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:36:07,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:36:07,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 07:36:07,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357514350] [2023-08-24 07:36:07,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:36:07,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 07:36:07,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:36:07,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 07:36:07,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-24 07:36:07,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:36:07,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 580 transitions, 13769 flow. Second operand has 8 states, 8 states have (on average 277.75) internal successors, (2222), 8 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:07,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:36:07,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:36:07,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:10,272 INFO L124 PetriNetUnfolderBase]: 6661/11572 cut-off events. [2023-08-24 07:36:10,272 INFO L125 PetriNetUnfolderBase]: For 243584/243584 co-relation queries the response was YES. [2023-08-24 07:36:10,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84490 conditions, 11572 events. 6661/11572 cut-off events. For 243584/243584 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 87141 event pairs, 1908 based on Foata normal form. 16/11588 useless extension candidates. Maximal degree in co-relation 84376. Up to 4631 conditions per place. [2023-08-24 07:36:10,365 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 417 selfloop transitions, 284 changer transitions 0/701 dead transitions. [2023-08-24 07:36:10,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 701 transitions, 16685 flow [2023-08-24 07:36:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:36:10,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:36:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2023 transitions. [2023-08-24 07:36:10,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3733850129198966 [2023-08-24 07:36:10,367 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2023 transitions. [2023-08-24 07:36:10,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2023 transitions. [2023-08-24 07:36:10,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:10,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2023 transitions. [2023-08-24 07:36:10,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 289.0) internal successors, (2023), 7 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:10,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:10,371 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:10,371 INFO L175 Difference]: Start difference. First operand has 243 places, 580 transitions, 13769 flow. Second operand 7 states and 2023 transitions. [2023-08-24 07:36:10,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 701 transitions, 16685 flow [2023-08-24 07:36:11,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 701 transitions, 16232 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-24 07:36:11,932 INFO L231 Difference]: Finished difference. Result has 248 places, 583 transitions, 14092 flow [2023-08-24 07:36:11,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=13263, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14092, PETRI_PLACES=248, PETRI_TRANSITIONS=583} [2023-08-24 07:36:11,932 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2023-08-24 07:36:11,932 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 583 transitions, 14092 flow [2023-08-24 07:36:11,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.75) internal successors, (2222), 8 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:11,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:11,933 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:11,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-24 07:36:11,933 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:11,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:11,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1641101835, now seen corresponding path program 14 times [2023-08-24 07:36:11,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:11,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610926441] [2023-08-24 07:36:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:11,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:36:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:36:12,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:36:12,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610926441] [2023-08-24 07:36:12,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610926441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:36:12,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:36:12,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:36:12,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650241812] [2023-08-24 07:36:12,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:36:12,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:36:12,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:36:12,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:36:12,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:36:12,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:36:12,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 583 transitions, 14092 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:12,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:36:12,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:36:12,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:14,954 INFO L124 PetriNetUnfolderBase]: 6618/11485 cut-off events. [2023-08-24 07:36:14,954 INFO L125 PetriNetUnfolderBase]: For 246213/246213 co-relation queries the response was YES. [2023-08-24 07:36:15,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84402 conditions, 11485 events. 6618/11485 cut-off events. For 246213/246213 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 86173 event pairs, 1866 based on Foata normal form. 26/11511 useless extension candidates. Maximal degree in co-relation 84286. Up to 4631 conditions per place. [2023-08-24 07:36:15,054 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 401 selfloop transitions, 288 changer transitions 0/689 dead transitions. [2023-08-24 07:36:15,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 689 transitions, 16670 flow [2023-08-24 07:36:15,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:36:15,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:36:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2020 transitions. [2023-08-24 07:36:15,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3728313030638612 [2023-08-24 07:36:15,059 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2020 transitions. [2023-08-24 07:36:15,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2020 transitions. [2023-08-24 07:36:15,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:15,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2020 transitions. [2023-08-24 07:36:15,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.57142857142856) internal successors, (2020), 7 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:15,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:15,064 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:15,064 INFO L175 Difference]: Start difference. First operand has 248 places, 583 transitions, 14092 flow. Second operand 7 states and 2020 transitions. [2023-08-24 07:36:15,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 689 transitions, 16670 flow [2023-08-24 07:36:16,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 689 transitions, 16073 flow, removed 27 selfloop flow, removed 5 redundant places. [2023-08-24 07:36:16,719 INFO L231 Difference]: Finished difference. Result has 250 places, 584 transitions, 14151 flow [2023-08-24 07:36:16,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=13485, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14151, PETRI_PLACES=250, PETRI_TRANSITIONS=584} [2023-08-24 07:36:16,720 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2023-08-24 07:36:16,720 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 584 transitions, 14151 flow [2023-08-24 07:36:16,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:16,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:16,720 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:16,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-24 07:36:16,721 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:16,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:16,721 INFO L85 PathProgramCache]: Analyzing trace with hash -574448902, now seen corresponding path program 14 times [2023-08-24 07:36:16,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:16,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956112746] [2023-08-24 07:36:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:16,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:36:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:36:17,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:36:17,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956112746] [2023-08-24 07:36:17,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956112746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:36:17,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:36:17,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:36:17,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210570066] [2023-08-24 07:36:17,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:36:17,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:36:17,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:36:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:36:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:36:17,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:36:17,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 584 transitions, 14151 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:17,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:36:17,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:36:17,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:19,794 INFO L124 PetriNetUnfolderBase]: 6640/11543 cut-off events. [2023-08-24 07:36:19,795 INFO L125 PetriNetUnfolderBase]: For 248147/248147 co-relation queries the response was YES. [2023-08-24 07:36:19,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84735 conditions, 11543 events. 6640/11543 cut-off events. For 248147/248147 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 86950 event pairs, 1934 based on Foata normal form. 18/11561 useless extension candidates. Maximal degree in co-relation 84620. Up to 7432 conditions per place. [2023-08-24 07:36:19,902 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 391 selfloop transitions, 277 changer transitions 0/668 dead transitions. [2023-08-24 07:36:19,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 668 transitions, 16374 flow [2023-08-24 07:36:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:36:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:36:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-08-24 07:36:19,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37061646363971945 [2023-08-24 07:36:19,904 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-08-24 07:36:19,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-08-24 07:36:19,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:19,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-08-24 07:36:19,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:19,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:19,908 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:19,908 INFO L175 Difference]: Start difference. First operand has 250 places, 584 transitions, 14151 flow. Second operand 7 states and 2008 transitions. [2023-08-24 07:36:19,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 668 transitions, 16374 flow [2023-08-24 07:36:21,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 668 transitions, 15937 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-24 07:36:21,837 INFO L231 Difference]: Finished difference. Result has 256 places, 590 transitions, 14454 flow [2023-08-24 07:36:21,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=13720, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14454, PETRI_PLACES=256, PETRI_TRANSITIONS=590} [2023-08-24 07:36:21,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2023-08-24 07:36:21,838 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 590 transitions, 14454 flow [2023-08-24 07:36:21,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:21,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:21,838 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:21,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-24 07:36:21,839 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:21,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:21,839 INFO L85 PathProgramCache]: Analyzing trace with hash 877920310, now seen corresponding path program 15 times [2023-08-24 07:36:21,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:21,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661920664] [2023-08-24 07:36:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:21,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:36:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:36:22,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:36:22,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661920664] [2023-08-24 07:36:22,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661920664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:36:22,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:36:22,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:36:22,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007195003] [2023-08-24 07:36:22,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:36:22,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:36:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:36:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:36:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:36:22,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:36:22,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 590 transitions, 14454 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:22,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:36:22,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:36:22,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:25,177 INFO L124 PetriNetUnfolderBase]: 6624/11499 cut-off events. [2023-08-24 07:36:25,177 INFO L125 PetriNetUnfolderBase]: For 254882/254882 co-relation queries the response was YES. [2023-08-24 07:36:25,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85660 conditions, 11499 events. 6624/11499 cut-off events. For 254882/254882 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 86956 event pairs, 897 based on Foata normal form. 8/11507 useless extension candidates. Maximal degree in co-relation 85542. Up to 3778 conditions per place. [2023-08-24 07:36:25,269 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 378 selfloop transitions, 344 changer transitions 1/723 dead transitions. [2023-08-24 07:36:25,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 723 transitions, 17508 flow [2023-08-24 07:36:25,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 07:36:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 07:36:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2802 transitions. [2023-08-24 07:36:25,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362015503875969 [2023-08-24 07:36:25,272 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2802 transitions. [2023-08-24 07:36:25,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2802 transitions. [2023-08-24 07:36:25,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:25,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2802 transitions. [2023-08-24 07:36:25,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 280.2) internal successors, (2802), 10 states have internal predecessors, (2802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:25,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 774.0) internal successors, (8514), 11 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:25,278 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 774.0) internal successors, (8514), 11 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:25,278 INFO L175 Difference]: Start difference. First operand has 256 places, 590 transitions, 14454 flow. Second operand 10 states and 2802 transitions. [2023-08-24 07:36:25,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 723 transitions, 17508 flow [2023-08-24 07:36:27,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 723 transitions, 16947 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-08-24 07:36:27,082 INFO L231 Difference]: Finished difference. Result has 263 places, 618 transitions, 15165 flow [2023-08-24 07:36:27,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=13891, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15165, PETRI_PLACES=263, PETRI_TRANSITIONS=618} [2023-08-24 07:36:27,082 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2023-08-24 07:36:27,083 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 618 transitions, 15165 flow [2023-08-24 07:36:27,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:27,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:27,083 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:27,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-24 07:36:27,083 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:27,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash -104627448, now seen corresponding path program 16 times [2023-08-24 07:36:27,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:27,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322835292] [2023-08-24 07:36:27,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:27,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:36:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:36:27,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:36:27,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322835292] [2023-08-24 07:36:27,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322835292] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:36:27,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:36:27,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:36:27,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045685443] [2023-08-24 07:36:27,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:36:27,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:36:27,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:36:27,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:36:27,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:36:27,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:36:27,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 618 transitions, 15165 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:27,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:36:27,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:36:27,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:30,401 INFO L124 PetriNetUnfolderBase]: 6575/11402 cut-off events. [2023-08-24 07:36:30,402 INFO L125 PetriNetUnfolderBase]: For 255947/255947 co-relation queries the response was YES. [2023-08-24 07:36:30,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86049 conditions, 11402 events. 6575/11402 cut-off events. For 255947/255947 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 85290 event pairs, 1932 based on Foata normal form. 18/11420 useless extension candidates. Maximal degree in co-relation 85930. Up to 7432 conditions per place. [2023-08-24 07:36:30,504 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 419 selfloop transitions, 285 changer transitions 1/705 dead transitions. [2023-08-24 07:36:30,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 705 transitions, 17481 flow [2023-08-24 07:36:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:36:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:36:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2014 transitions. [2023-08-24 07:36:30,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37172388335179035 [2023-08-24 07:36:30,506 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2014 transitions. [2023-08-24 07:36:30,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2014 transitions. [2023-08-24 07:36:30,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:30,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2014 transitions. [2023-08-24 07:36:30,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.7142857142857) internal successors, (2014), 7 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:30,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:30,510 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:30,510 INFO L175 Difference]: Start difference. First operand has 263 places, 618 transitions, 15165 flow. Second operand 7 states and 2014 transitions. [2023-08-24 07:36:30,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 705 transitions, 17481 flow [2023-08-24 07:36:32,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 705 transitions, 17108 flow, removed 39 selfloop flow, removed 3 redundant places. [2023-08-24 07:36:32,350 INFO L231 Difference]: Finished difference. Result has 267 places, 624 transitions, 15541 flow [2023-08-24 07:36:32,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=14776, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15541, PETRI_PLACES=267, PETRI_TRANSITIONS=624} [2023-08-24 07:36:32,351 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2023-08-24 07:36:32,351 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 624 transitions, 15541 flow [2023-08-24 07:36:32,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:32,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:32,352 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:32,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-24 07:36:32,352 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:32,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:32,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1263100139, now seen corresponding path program 15 times [2023-08-24 07:36:32,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:32,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421944546] [2023-08-24 07:36:32,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:32,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:36:32,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:36:32,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:36:32,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421944546] [2023-08-24 07:36:32,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421944546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:36:32,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:36:32,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:36:32,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969434648] [2023-08-24 07:36:32,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:36:32,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:36:32,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:36:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:36:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:36:32,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:36:32,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 624 transitions, 15541 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:32,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:36:32,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:36:32,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:35,541 INFO L124 PetriNetUnfolderBase]: 6562/11371 cut-off events. [2023-08-24 07:36:35,541 INFO L125 PetriNetUnfolderBase]: For 257142/257142 co-relation queries the response was YES. [2023-08-24 07:36:35,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86362 conditions, 11371 events. 6562/11371 cut-off events. For 257142/257142 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 84954 event pairs, 1866 based on Foata normal form. 4/11375 useless extension candidates. Maximal degree in co-relation 86242. Up to 4631 conditions per place. [2023-08-24 07:36:35,649 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 475 selfloop transitions, 253 changer transitions 4/732 dead transitions. [2023-08-24 07:36:35,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 732 transitions, 18284 flow [2023-08-24 07:36:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:36:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:36:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2011 transitions. [2023-08-24 07:36:35,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711701734957549 [2023-08-24 07:36:35,651 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2011 transitions. [2023-08-24 07:36:35,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2011 transitions. [2023-08-24 07:36:35,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:35,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2011 transitions. [2023-08-24 07:36:35,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.2857142857143) internal successors, (2011), 7 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:35,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:35,655 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:35,655 INFO L175 Difference]: Start difference. First operand has 267 places, 624 transitions, 15541 flow. Second operand 7 states and 2011 transitions. [2023-08-24 07:36:35,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 732 transitions, 18284 flow [2023-08-24 07:36:37,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 732 transitions, 17753 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-24 07:36:37,713 INFO L231 Difference]: Finished difference. Result has 270 places, 622 transitions, 15464 flow [2023-08-24 07:36:37,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=14979, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15464, PETRI_PLACES=270, PETRI_TRANSITIONS=622} [2023-08-24 07:36:37,713 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2023-08-24 07:36:37,714 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 622 transitions, 15464 flow [2023-08-24 07:36:37,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:37,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:37,714 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:37,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-24 07:36:37,714 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:37,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:37,714 INFO L85 PathProgramCache]: Analyzing trace with hash 170607956, now seen corresponding path program 17 times [2023-08-24 07:36:37,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:37,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658499997] [2023-08-24 07:36:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:37,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:36:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:36:37,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:36:37,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658499997] [2023-08-24 07:36:37,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658499997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:36:37,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:36:37,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:36:37,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217440633] [2023-08-24 07:36:37,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:36:37,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:36:37,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:36:37,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:36:37,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:36:37,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:36:37,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 622 transitions, 15464 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:37,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:36:37,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:36:37,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:40,908 INFO L124 PetriNetUnfolderBase]: 6535/11312 cut-off events. [2023-08-24 07:36:40,908 INFO L125 PetriNetUnfolderBase]: For 260546/260546 co-relation queries the response was YES. [2023-08-24 07:36:40,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85884 conditions, 11312 events. 6535/11312 cut-off events. For 260546/260546 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 84301 event pairs, 1928 based on Foata normal form. 16/11328 useless extension candidates. Maximal degree in co-relation 85764. Up to 7410 conditions per place. [2023-08-24 07:36:41,023 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 412 selfloop transitions, 281 changer transitions 0/693 dead transitions. [2023-08-24 07:36:41,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 693 transitions, 17434 flow [2023-08-24 07:36:41,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:36:41,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:36:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-08-24 07:36:41,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709856035437431 [2023-08-24 07:36:41,025 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-08-24 07:36:41,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-08-24 07:36:41,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:41,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-08-24 07:36:41,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:41,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:41,029 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:41,029 INFO L175 Difference]: Start difference. First operand has 270 places, 622 transitions, 15464 flow. Second operand 7 states and 2010 transitions. [2023-08-24 07:36:41,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 693 transitions, 17434 flow [2023-08-24 07:36:43,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 693 transitions, 16852 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-24 07:36:43,152 INFO L231 Difference]: Finished difference. Result has 268 places, 617 transitions, 15312 flow [2023-08-24 07:36:43,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=14750, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15312, PETRI_PLACES=268, PETRI_TRANSITIONS=617} [2023-08-24 07:36:43,153 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2023-08-24 07:36:43,153 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 617 transitions, 15312 flow [2023-08-24 07:36:43,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:43,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:43,153 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:43,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-24 07:36:43,153 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:43,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1979033283, now seen corresponding path program 16 times [2023-08-24 07:36:43,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:43,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644235690] [2023-08-24 07:36:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:43,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:36:43,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:36:43,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:36:43,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644235690] [2023-08-24 07:36:43,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644235690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:36:43,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:36:43,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:36:43,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659094759] [2023-08-24 07:36:43,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:36:43,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:36:43,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:36:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:36:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:36:43,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:36:43,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 617 transitions, 15312 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:43,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:36:43,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:36:43,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:46,352 INFO L124 PetriNetUnfolderBase]: 6761/11730 cut-off events. [2023-08-24 07:36:46,352 INFO L125 PetriNetUnfolderBase]: For 266354/266354 co-relation queries the response was YES. [2023-08-24 07:36:46,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88865 conditions, 11730 events. 6761/11730 cut-off events. For 266354/266354 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 88285 event pairs, 1856 based on Foata normal form. 8/11738 useless extension candidates. Maximal degree in co-relation 88746. Up to 4631 conditions per place. [2023-08-24 07:36:46,466 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 469 selfloop transitions, 282 changer transitions 0/751 dead transitions. [2023-08-24 07:36:46,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 751 transitions, 18710 flow [2023-08-24 07:36:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:36:46,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:36:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2019 transitions. [2023-08-24 07:36:46,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37264673311184937 [2023-08-24 07:36:46,468 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2019 transitions. [2023-08-24 07:36:46,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2019 transitions. [2023-08-24 07:36:46,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:46,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2019 transitions. [2023-08-24 07:36:46,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:46,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:46,472 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:46,473 INFO L175 Difference]: Start difference. First operand has 268 places, 617 transitions, 15312 flow. Second operand 7 states and 2019 transitions. [2023-08-24 07:36:46,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 751 transitions, 18710 flow [2023-08-24 07:36:48,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 751 transitions, 17863 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-24 07:36:48,694 INFO L231 Difference]: Finished difference. Result has 271 places, 650 transitions, 16020 flow [2023-08-24 07:36:48,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=14542, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16020, PETRI_PLACES=271, PETRI_TRANSITIONS=650} [2023-08-24 07:36:48,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2023-08-24 07:36:48,695 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 650 transitions, 16020 flow [2023-08-24 07:36:48,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:48,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:48,695 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:48,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-24 07:36:48,695 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:48,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:48,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1471353226, now seen corresponding path program 18 times [2023-08-24 07:36:48,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:48,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133244368] [2023-08-24 07:36:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:48,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:36:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:36:48,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:36:48,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133244368] [2023-08-24 07:36:48,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133244368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:36:48,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:36:48,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:36:48,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804840356] [2023-08-24 07:36:48,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:36:48,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:36:48,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:36:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:36:48,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:36:48,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:36:48,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 650 transitions, 16020 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:48,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:36:48,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:36:48,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:52,251 INFO L124 PetriNetUnfolderBase]: 6731/11700 cut-off events. [2023-08-24 07:36:52,251 INFO L125 PetriNetUnfolderBase]: For 275677/275677 co-relation queries the response was YES. [2023-08-24 07:36:52,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89497 conditions, 11700 events. 6731/11700 cut-off events. For 275677/275677 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 88239 event pairs, 1974 based on Foata normal form. 30/11730 useless extension candidates. Maximal degree in co-relation 89374. Up to 7800 conditions per place. [2023-08-24 07:36:52,348 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 420 selfloop transitions, 303 changer transitions 0/723 dead transitions. [2023-08-24 07:36:52,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 723 transitions, 18166 flow [2023-08-24 07:36:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:36:52,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:36:52,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2013 transitions. [2023-08-24 07:36:52,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715393133997785 [2023-08-24 07:36:52,351 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2013 transitions. [2023-08-24 07:36:52,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2013 transitions. [2023-08-24 07:36:52,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:52,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2013 transitions. [2023-08-24 07:36:52,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.57142857142856) internal successors, (2013), 7 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:52,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:52,355 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:52,355 INFO L175 Difference]: Start difference. First operand has 271 places, 650 transitions, 16020 flow. Second operand 7 states and 2013 transitions. [2023-08-24 07:36:52,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 723 transitions, 18166 flow [2023-08-24 07:36:54,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 723 transitions, 17756 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-08-24 07:36:54,303 INFO L231 Difference]: Finished difference. Result has 277 places, 656 transitions, 16401 flow [2023-08-24 07:36:54,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=15616, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16401, PETRI_PLACES=277, PETRI_TRANSITIONS=656} [2023-08-24 07:36:54,304 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2023-08-24 07:36:54,304 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 656 transitions, 16401 flow [2023-08-24 07:36:54,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:54,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:54,305 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:54,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-24 07:36:54,305 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:54,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2029848841, now seen corresponding path program 17 times [2023-08-24 07:36:54,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:54,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739534194] [2023-08-24 07:36:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:54,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:36:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:36:54,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:36:54,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739534194] [2023-08-24 07:36:54,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739534194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:36:54,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:36:54,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:36:54,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439337864] [2023-08-24 07:36:54,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:36:54,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:36:54,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:36:54,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:36:54,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:36:54,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:36:54,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 656 transitions, 16401 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:54,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:36:54,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:36:54,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:36:57,698 INFO L124 PetriNetUnfolderBase]: 6704/11639 cut-off events. [2023-08-24 07:36:57,698 INFO L125 PetriNetUnfolderBase]: For 273263/273263 co-relation queries the response was YES. [2023-08-24 07:36:57,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89419 conditions, 11639 events. 6704/11639 cut-off events. For 273263/273263 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 87662 event pairs, 1842 based on Foata normal form. 26/11665 useless extension candidates. Maximal degree in co-relation 89294. Up to 4631 conditions per place. [2023-08-24 07:36:57,807 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 465 selfloop transitions, 293 changer transitions 1/759 dead transitions. [2023-08-24 07:36:57,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 759 transitions, 19183 flow [2023-08-24 07:36:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:36:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:36:57,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2019 transitions. [2023-08-24 07:36:57,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37264673311184937 [2023-08-24 07:36:57,816 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2019 transitions. [2023-08-24 07:36:57,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2019 transitions. [2023-08-24 07:36:57,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:36:57,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2019 transitions. [2023-08-24 07:36:57,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:57,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:57,820 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:57,820 INFO L175 Difference]: Start difference. First operand has 277 places, 656 transitions, 16401 flow. Second operand 7 states and 2019 transitions. [2023-08-24 07:36:57,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 759 transitions, 19183 flow [2023-08-24 07:36:59,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 759 transitions, 18709 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-24 07:36:59,944 INFO L231 Difference]: Finished difference. Result has 283 places, 666 transitions, 16859 flow [2023-08-24 07:36:59,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=15931, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16859, PETRI_PLACES=283, PETRI_TRANSITIONS=666} [2023-08-24 07:36:59,945 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2023-08-24 07:36:59,945 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 666 transitions, 16859 flow [2023-08-24 07:36:59,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:36:59,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:36:59,945 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:36:59,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-24 07:36:59,945 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:36:59,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:36:59,946 INFO L85 PathProgramCache]: Analyzing trace with hash 821962768, now seen corresponding path program 19 times [2023-08-24 07:36:59,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:36:59,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767735149] [2023-08-24 07:36:59,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:36:59,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:36:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:37:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:00,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:37:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767735149] [2023-08-24 07:37:00,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767735149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:37:00,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:37:00,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:37:00,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214273058] [2023-08-24 07:37:00,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:37:00,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:37:00,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:37:00,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:37:00,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:37:00,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:37:00,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 666 transitions, 16859 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:00,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:37:00,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:37:00,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:37:03,229 INFO L124 PetriNetUnfolderBase]: 6732/11683 cut-off events. [2023-08-24 07:37:03,229 INFO L125 PetriNetUnfolderBase]: For 281379/281379 co-relation queries the response was YES. [2023-08-24 07:37:03,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90089 conditions, 11683 events. 6732/11683 cut-off events. For 281379/281379 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 88019 event pairs, 1936 based on Foata normal form. 16/11699 useless extension candidates. Maximal degree in co-relation 89962. Up to 7755 conditions per place. [2023-08-24 07:37:03,344 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 436 selfloop transitions, 305 changer transitions 0/741 dead transitions. [2023-08-24 07:37:03,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 741 transitions, 19065 flow [2023-08-24 07:37:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:37:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:37:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2015 transitions. [2023-08-24 07:37:03,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3719084533038021 [2023-08-24 07:37:03,346 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2015 transitions. [2023-08-24 07:37:03,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2015 transitions. [2023-08-24 07:37:03,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:37:03,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2015 transitions. [2023-08-24 07:37:03,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.85714285714283) internal successors, (2015), 7 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:03,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:03,350 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:03,350 INFO L175 Difference]: Start difference. First operand has 283 places, 666 transitions, 16859 flow. Second operand 7 states and 2015 transitions. [2023-08-24 07:37:03,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 741 transitions, 19065 flow [2023-08-24 07:37:05,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 741 transitions, 18531 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-24 07:37:05,623 INFO L231 Difference]: Finished difference. Result has 288 places, 677 transitions, 17252 flow [2023-08-24 07:37:05,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=16327, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17252, PETRI_PLACES=288, PETRI_TRANSITIONS=677} [2023-08-24 07:37:05,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2023-08-24 07:37:05,624 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 677 transitions, 17252 flow [2023-08-24 07:37:05,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:05,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:37:05,624 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:37:05,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-24 07:37:05,625 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:37:05,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:37:05,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1452321329, now seen corresponding path program 18 times [2023-08-24 07:37:05,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:37:05,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944875911] [2023-08-24 07:37:05,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:37:05,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:37:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:37:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:05,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:37:05,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944875911] [2023-08-24 07:37:05,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944875911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:37:05,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:37:05,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:37:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114565229] [2023-08-24 07:37:05,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:37:05,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:37:05,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:37:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:37:05,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:37:05,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:37:05,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 677 transitions, 17252 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:05,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:37:05,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:37:05,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:37:09,010 INFO L124 PetriNetUnfolderBase]: 6717/11636 cut-off events. [2023-08-24 07:37:09,010 INFO L125 PetriNetUnfolderBase]: For 285636/285636 co-relation queries the response was YES. [2023-08-24 07:37:09,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90948 conditions, 11636 events. 6717/11636 cut-off events. For 285636/285636 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 87289 event pairs, 1854 based on Foata normal form. 4/11640 useless extension candidates. Maximal degree in co-relation 90818. Up to 4631 conditions per place. [2023-08-24 07:37:09,138 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 478 selfloop transitions, 287 changer transitions 1/766 dead transitions. [2023-08-24 07:37:09,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 766 transitions, 19702 flow [2023-08-24 07:37:09,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:37:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:37:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2017 transitions. [2023-08-24 07:37:09,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722775932078258 [2023-08-24 07:37:09,140 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2017 transitions. [2023-08-24 07:37:09,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2017 transitions. [2023-08-24 07:37:09,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:37:09,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2017 transitions. [2023-08-24 07:37:09,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.14285714285717) internal successors, (2017), 7 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:09,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:09,144 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:09,144 INFO L175 Difference]: Start difference. First operand has 288 places, 677 transitions, 17252 flow. Second operand 7 states and 2017 transitions. [2023-08-24 07:37:09,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 766 transitions, 19702 flow [2023-08-24 07:37:11,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 766 transitions, 19124 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-24 07:37:11,830 INFO L231 Difference]: Finished difference. Result has 292 places, 677 transitions, 17228 flow [2023-08-24 07:37:11,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=16610, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17228, PETRI_PLACES=292, PETRI_TRANSITIONS=677} [2023-08-24 07:37:11,831 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2023-08-24 07:37:11,831 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 677 transitions, 17228 flow [2023-08-24 07:37:11,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:11,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:37:11,831 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:37:11,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-24 07:37:11,831 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:37:11,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:37:11,831 INFO L85 PathProgramCache]: Analyzing trace with hash -312835424, now seen corresponding path program 20 times [2023-08-24 07:37:11,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:37:11,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299294788] [2023-08-24 07:37:11,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:37:11,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:37:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:37:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:12,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:37:12,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299294788] [2023-08-24 07:37:12,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299294788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:37:12,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:37:12,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:37:12,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087209344] [2023-08-24 07:37:12,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:37:12,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:37:12,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:37:12,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:37:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:37:12,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:37:12,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 677 transitions, 17228 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:12,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:37:12,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:37:12,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:37:15,347 INFO L124 PetriNetUnfolderBase]: 6707/11602 cut-off events. [2023-08-24 07:37:15,348 INFO L125 PetriNetUnfolderBase]: For 292605/292605 co-relation queries the response was YES. [2023-08-24 07:37:15,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90935 conditions, 11602 events. 6707/11602 cut-off events. For 292605/292605 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 86830 event pairs, 1938 based on Foata normal form. 12/11614 useless extension candidates. Maximal degree in co-relation 90804. Up to 7708 conditions per place. [2023-08-24 07:37:15,444 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 431 selfloop transitions, 313 changer transitions 0/744 dead transitions. [2023-08-24 07:37:15,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 744 transitions, 19299 flow [2023-08-24 07:37:15,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:37:15,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:37:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2015 transitions. [2023-08-24 07:37:15,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3719084533038021 [2023-08-24 07:37:15,446 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2015 transitions. [2023-08-24 07:37:15,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2015 transitions. [2023-08-24 07:37:15,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:37:15,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2015 transitions. [2023-08-24 07:37:15,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.85714285714283) internal successors, (2015), 7 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:15,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:15,450 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:15,450 INFO L175 Difference]: Start difference. First operand has 292 places, 677 transitions, 17228 flow. Second operand 7 states and 2015 transitions. [2023-08-24 07:37:15,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 744 transitions, 19299 flow [2023-08-24 07:37:17,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 744 transitions, 18804 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-24 07:37:17,537 INFO L231 Difference]: Finished difference. Result has 297 places, 681 transitions, 17490 flow [2023-08-24 07:37:17,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=16743, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17490, PETRI_PLACES=297, PETRI_TRANSITIONS=681} [2023-08-24 07:37:17,538 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2023-08-24 07:37:17,538 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 681 transitions, 17490 flow [2023-08-24 07:37:17,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:17,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:37:17,538 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:37:17,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-24 07:37:17,538 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:37:17,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:37:17,539 INFO L85 PathProgramCache]: Analyzing trace with hash 530620029, now seen corresponding path program 19 times [2023-08-24 07:37:17,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:37:17,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246510543] [2023-08-24 07:37:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:37:17,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:37:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:37:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:17,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:37:17,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246510543] [2023-08-24 07:37:17,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246510543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:37:17,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:37:17,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:37:17,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158381666] [2023-08-24 07:37:17,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:37:17,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:37:17,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:37:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:37:17,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:37:17,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:37:17,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 681 transitions, 17490 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:17,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:37:17,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:37:17,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:37:20,986 INFO L124 PetriNetUnfolderBase]: 6706/11605 cut-off events. [2023-08-24 07:37:20,987 INFO L125 PetriNetUnfolderBase]: For 296713/296713 co-relation queries the response was YES. [2023-08-24 07:37:21,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91649 conditions, 11605 events. 6706/11605 cut-off events. For 296713/296713 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 86893 event pairs, 1848 based on Foata normal form. 4/11609 useless extension candidates. Maximal degree in co-relation 91516. Up to 4631 conditions per place. [2023-08-24 07:37:21,101 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 474 selfloop transitions, 284 changer transitions 5/763 dead transitions. [2023-08-24 07:37:21,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 763 transitions, 19942 flow [2023-08-24 07:37:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:37:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:37:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-08-24 07:37:21,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709856035437431 [2023-08-24 07:37:21,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-08-24 07:37:21,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-08-24 07:37:21,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:37:21,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-08-24 07:37:21,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:21,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:21,107 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:21,107 INFO L175 Difference]: Start difference. First operand has 297 places, 681 transitions, 17490 flow. Second operand 7 states and 2010 transitions. [2023-08-24 07:37:21,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 763 transitions, 19942 flow [2023-08-24 07:37:23,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 763 transitions, 19380 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-24 07:37:23,545 INFO L231 Difference]: Finished difference. Result has 302 places, 681 transitions, 17521 flow [2023-08-24 07:37:23,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=16928, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17521, PETRI_PLACES=302, PETRI_TRANSITIONS=681} [2023-08-24 07:37:23,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2023-08-24 07:37:23,545 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 681 transitions, 17521 flow [2023-08-24 07:37:23,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:23,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:37:23,546 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:37:23,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-24 07:37:23,546 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:37:23,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:37:23,546 INFO L85 PathProgramCache]: Analyzing trace with hash -575108934, now seen corresponding path program 21 times [2023-08-24 07:37:23,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:37:23,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009503341] [2023-08-24 07:37:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:37:23,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:37:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:37:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:23,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:37:23,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009503341] [2023-08-24 07:37:23,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009503341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:37:23,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775416671] [2023-08-24 07:37:23,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 07:37:23,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:37:23,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:37:23,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:37:23,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 07:37:23,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 07:37:23,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:37:23,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-24 07:37:23,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:37:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:24,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:37:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:24,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775416671] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 07:37:24,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 07:37:24,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-08-24 07:37:24,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225690063] [2023-08-24 07:37:24,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:37:24,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:37:24,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:37:24,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:37:24,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-08-24 07:37:24,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:37:24,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 681 transitions, 17521 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:24,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:37:24,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:37:24,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:37:27,518 INFO L124 PetriNetUnfolderBase]: 6689/11556 cut-off events. [2023-08-24 07:37:27,518 INFO L125 PetriNetUnfolderBase]: For 303110/303110 co-relation queries the response was YES. [2023-08-24 07:37:27,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91365 conditions, 11556 events. 6689/11556 cut-off events. For 303110/303110 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 86314 event pairs, 1928 based on Foata normal form. 8/11564 useless extension candidates. Maximal degree in co-relation 91230. Up to 7708 conditions per place. [2023-08-24 07:37:27,638 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 432 selfloop transitions, 314 changer transitions 1/747 dead transitions. [2023-08-24 07:37:27,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 747 transitions, 19557 flow [2023-08-24 07:37:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:37:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:37:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2019 transitions. [2023-08-24 07:37:27,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37264673311184937 [2023-08-24 07:37:27,640 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2019 transitions. [2023-08-24 07:37:27,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2019 transitions. [2023-08-24 07:37:27,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:37:27,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2019 transitions. [2023-08-24 07:37:27,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:27,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:27,644 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:27,644 INFO L175 Difference]: Start difference. First operand has 302 places, 681 transitions, 17521 flow. Second operand 7 states and 2019 transitions. [2023-08-24 07:37:27,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 747 transitions, 19557 flow [2023-08-24 07:37:30,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 747 transitions, 18963 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-08-24 07:37:30,680 INFO L231 Difference]: Finished difference. Result has 301 places, 681 transitions, 17548 flow [2023-08-24 07:37:30,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=16901, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17548, PETRI_PLACES=301, PETRI_TRANSITIONS=681} [2023-08-24 07:37:30,681 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2023-08-24 07:37:30,681 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 681 transitions, 17548 flow [2023-08-24 07:37:30,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:30,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:37:30,681 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:37:30,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 07:37:30,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-08-24 07:37:30,886 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:37:30,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:37:30,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2141560987, now seen corresponding path program 20 times [2023-08-24 07:37:30,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:37:30,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79422433] [2023-08-24 07:37:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:37:30,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:37:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:37:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:31,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:37:31,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79422433] [2023-08-24 07:37:31,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79422433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:37:31,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:37:31,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:37:31,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656000111] [2023-08-24 07:37:31,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:37:31,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:37:31,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:37:31,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:37:31,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:37:31,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:37:31,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 681 transitions, 17548 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:31,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:37:31,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:37:31,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:37:34,640 INFO L124 PetriNetUnfolderBase]: 6668/11505 cut-off events. [2023-08-24 07:37:34,640 INFO L125 PetriNetUnfolderBase]: For 291004/291004 co-relation queries the response was YES. [2023-08-24 07:37:34,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90430 conditions, 11505 events. 6668/11505 cut-off events. For 291004/291004 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 85689 event pairs, 1846 based on Foata normal form. 8/11513 useless extension candidates. Maximal degree in co-relation 90296. Up to 4631 conditions per place. [2023-08-24 07:37:34,736 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 471 selfloop transitions, 288 changer transitions 1/760 dead transitions. [2023-08-24 07:37:34,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 760 transitions, 19865 flow [2023-08-24 07:37:34,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:37:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:37:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2013 transitions. [2023-08-24 07:37:34,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715393133997785 [2023-08-24 07:37:34,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2013 transitions. [2023-08-24 07:37:34,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2013 transitions. [2023-08-24 07:37:34,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:37:34,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2013 transitions. [2023-08-24 07:37:34,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.57142857142856) internal successors, (2013), 7 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:34,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:34,742 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:34,742 INFO L175 Difference]: Start difference. First operand has 301 places, 681 transitions, 17548 flow. Second operand 7 states and 2013 transitions. [2023-08-24 07:37:34,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 760 transitions, 19865 flow [2023-08-24 07:37:36,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 760 transitions, 19283 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-24 07:37:36,923 INFO L231 Difference]: Finished difference. Result has 301 places, 679 transitions, 17572 flow [2023-08-24 07:37:36,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=16915, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17572, PETRI_PLACES=301, PETRI_TRANSITIONS=679} [2023-08-24 07:37:36,924 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2023-08-24 07:37:36,924 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 679 transitions, 17572 flow [2023-08-24 07:37:36,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:36,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:37:36,925 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:37:36,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-24 07:37:36,925 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:37:36,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:37:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash 398267846, now seen corresponding path program 22 times [2023-08-24 07:37:36,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:37:36,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165068575] [2023-08-24 07:37:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:37:36,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:37:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:37:37,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:37,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:37:37,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165068575] [2023-08-24 07:37:37,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165068575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:37:37,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:37:37,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:37:37,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031179073] [2023-08-24 07:37:37,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:37:37,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:37:37,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:37:37,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:37:37,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:37:37,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:37:37,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 679 transitions, 17572 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:37,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:37:37,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:37:37,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:37:40,509 INFO L124 PetriNetUnfolderBase]: 6617/11408 cut-off events. [2023-08-24 07:37:40,509 INFO L125 PetriNetUnfolderBase]: For 294819/294819 co-relation queries the response was YES. [2023-08-24 07:37:40,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89933 conditions, 11408 events. 6617/11408 cut-off events. For 294819/294819 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 84660 event pairs, 1906 based on Foata normal form. 18/11426 useless extension candidates. Maximal degree in co-relation 89800. Up to 7664 conditions per place. [2023-08-24 07:37:40,621 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 427 selfloop transitions, 305 changer transitions 1/733 dead transitions. [2023-08-24 07:37:40,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 733 transitions, 19415 flow [2023-08-24 07:37:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:37:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:37:40,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-08-24 07:37:40,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3708010335917313 [2023-08-24 07:37:40,623 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-08-24 07:37:40,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-08-24 07:37:40,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:37:40,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-08-24 07:37:40,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:40,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:40,627 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:40,627 INFO L175 Difference]: Start difference. First operand has 301 places, 679 transitions, 17572 flow. Second operand 7 states and 2009 transitions. [2023-08-24 07:37:40,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 733 transitions, 19415 flow [2023-08-24 07:37:42,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 733 transitions, 18911 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-24 07:37:42,956 INFO L231 Difference]: Finished difference. Result has 304 places, 675 transitions, 17571 flow [2023-08-24 07:37:42,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=16993, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17571, PETRI_PLACES=304, PETRI_TRANSITIONS=675} [2023-08-24 07:37:42,957 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2023-08-24 07:37:42,957 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 675 transitions, 17571 flow [2023-08-24 07:37:42,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:42,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:37:42,957 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:37:42,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-24 07:37:42,958 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:37:42,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:37:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash -773087683, now seen corresponding path program 21 times [2023-08-24 07:37:42,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:37:42,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522142002] [2023-08-24 07:37:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:37:42,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:37:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:37:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:43,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:37:43,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522142002] [2023-08-24 07:37:43,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522142002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:37:43,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:37:43,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 07:37:43,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139414911] [2023-08-24 07:37:43,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:37:43,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 07:37:43,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:37:43,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 07:37:43,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-24 07:37:43,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:37:43,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 675 transitions, 17571 flow. Second operand has 8 states, 8 states have (on average 277.75) internal successors, (2222), 8 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:43,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:37:43,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:37:43,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:37:46,308 INFO L124 PetriNetUnfolderBase]: 6602/11375 cut-off events. [2023-08-24 07:37:46,308 INFO L125 PetriNetUnfolderBase]: For 291905/291905 co-relation queries the response was YES. [2023-08-24 07:37:46,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89725 conditions, 11375 events. 6602/11375 cut-off events. For 291905/291905 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 84345 event pairs, 1820 based on Foata normal form. 10/11385 useless extension candidates. Maximal degree in co-relation 89592. Up to 4631 conditions per place. [2023-08-24 07:37:46,428 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 463 selfloop transitions, 293 changer transitions 0/756 dead transitions. [2023-08-24 07:37:46,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 756 transitions, 19975 flow [2023-08-24 07:37:46,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:37:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:37:46,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-08-24 07:37:46,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3713547434477667 [2023-08-24 07:37:46,432 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-08-24 07:37:46,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-08-24 07:37:46,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:37:46,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-08-24 07:37:46,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:46,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:46,436 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:46,436 INFO L175 Difference]: Start difference. First operand has 304 places, 675 transitions, 17571 flow. Second operand 7 states and 2012 transitions. [2023-08-24 07:37:46,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 756 transitions, 19975 flow [2023-08-24 07:37:48,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 756 transitions, 19355 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-24 07:37:48,867 INFO L231 Difference]: Finished difference. Result has 304 places, 679 transitions, 17650 flow [2023-08-24 07:37:48,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=16931, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17650, PETRI_PLACES=304, PETRI_TRANSITIONS=679} [2023-08-24 07:37:48,868 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2023-08-24 07:37:48,868 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 679 transitions, 17650 flow [2023-08-24 07:37:48,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.75) internal successors, (2222), 8 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:48,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:37:48,868 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:37:48,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-24 07:37:48,868 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:37:48,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:37:48,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1346689466, now seen corresponding path program 23 times [2023-08-24 07:37:48,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:37:48,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561655564] [2023-08-24 07:37:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:37:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:37:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:37:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:49,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:37:49,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561655564] [2023-08-24 07:37:49,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561655564] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:37:49,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092326189] [2023-08-24 07:37:49,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 07:37:49,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:37:49,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:37:49,117 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:37:49,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 07:37:49,283 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 07:37:49,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:37:49,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 07:37:49,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:37:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:49,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:37:49,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:49,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092326189] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 07:37:49,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 07:37:49,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-08-24 07:37:49,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490160529] [2023-08-24 07:37:49,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:37:49,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:37:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:37:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:37:49,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-08-24 07:37:49,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:37:49,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 679 transitions, 17650 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:49,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:37:49,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:37:49,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:37:52,834 INFO L124 PetriNetUnfolderBase]: 6592/11345 cut-off events. [2023-08-24 07:37:52,834 INFO L125 PetriNetUnfolderBase]: For 296595/296595 co-relation queries the response was YES. [2023-08-24 07:37:52,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89398 conditions, 11345 events. 6592/11345 cut-off events. For 296595/296595 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 83965 event pairs, 1902 based on Foata normal form. 16/11361 useless extension candidates. Maximal degree in co-relation 89266. Up to 7648 conditions per place. [2023-08-24 07:37:52,959 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 421 selfloop transitions, 308 changer transitions 0/729 dead transitions. [2023-08-24 07:37:52,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 729 transitions, 19443 flow [2023-08-24 07:37:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:37:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:37:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-08-24 07:37:52,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3708010335917313 [2023-08-24 07:37:52,961 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-08-24 07:37:52,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-08-24 07:37:52,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:37:52,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-08-24 07:37:52,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:52,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:52,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:52,966 INFO L175 Difference]: Start difference. First operand has 304 places, 679 transitions, 17650 flow. Second operand 7 states and 2009 transitions. [2023-08-24 07:37:52,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 729 transitions, 19443 flow [2023-08-24 07:37:55,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 729 transitions, 18816 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-08-24 07:37:55,357 INFO L231 Difference]: Finished difference. Result has 302 places, 677 transitions, 17544 flow [2023-08-24 07:37:55,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=16877, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17544, PETRI_PLACES=302, PETRI_TRANSITIONS=677} [2023-08-24 07:37:55,357 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2023-08-24 07:37:55,357 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 677 transitions, 17544 flow [2023-08-24 07:37:55,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:55,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:37:55,358 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:37:55,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 07:37:55,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:37:55,562 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:37:55,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:37:55,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1840189662, now seen corresponding path program 24 times [2023-08-24 07:37:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:37:55,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729491040] [2023-08-24 07:37:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:37:55,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:37:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:37:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:37:55,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:37:55,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729491040] [2023-08-24 07:37:55,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729491040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:37:55,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:37:55,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:37:55,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661715553] [2023-08-24 07:37:55,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:37:55,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:37:55,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:37:55,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:37:55,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:37:55,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:37:55,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 677 transitions, 17544 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:55,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:37:55,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:37:55,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:37:59,175 INFO L124 PetriNetUnfolderBase]: 6666/11471 cut-off events. [2023-08-24 07:37:59,176 INFO L125 PetriNetUnfolderBase]: For 288293/288293 co-relation queries the response was YES. [2023-08-24 07:37:59,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90269 conditions, 11471 events. 6666/11471 cut-off events. For 288293/288293 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 85093 event pairs, 1560 based on Foata normal form. 8/11479 useless extension candidates. Maximal degree in co-relation 90138. Up to 4728 conditions per place. [2023-08-24 07:37:59,279 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 507 selfloop transitions, 308 changer transitions 0/815 dead transitions. [2023-08-24 07:37:59,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 815 transitions, 21370 flow [2023-08-24 07:37:59,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:37:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:37:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2019 transitions. [2023-08-24 07:37:59,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37264673311184937 [2023-08-24 07:37:59,281 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2019 transitions. [2023-08-24 07:37:59,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2019 transitions. [2023-08-24 07:37:59,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:37:59,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2019 transitions. [2023-08-24 07:37:59,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:59,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:59,285 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:37:59,285 INFO L175 Difference]: Start difference. First operand has 302 places, 677 transitions, 17544 flow. Second operand 7 states and 2019 transitions. [2023-08-24 07:37:59,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 815 transitions, 21370 flow [2023-08-24 07:38:01,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 815 transitions, 20651 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-24 07:38:01,519 INFO L231 Difference]: Finished difference. Result has 306 places, 708 transitions, 18615 flow [2023-08-24 07:38:01,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=16873, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18615, PETRI_PLACES=306, PETRI_TRANSITIONS=708} [2023-08-24 07:38:01,519 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2023-08-24 07:38:01,519 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 708 transitions, 18615 flow [2023-08-24 07:38:01,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:01,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:38:01,520 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:38:01,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-24 07:38:01,520 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:38:01,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:38:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2081640955, now seen corresponding path program 22 times [2023-08-24 07:38:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:38:01,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164102832] [2023-08-24 07:38:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:38:01,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:38:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:38:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:38:01,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:38:01,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164102832] [2023-08-24 07:38:01,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164102832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:38:01,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:38:01,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:38:01,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611380836] [2023-08-24 07:38:01,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:38:01,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:38:01,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:38:01,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:38:01,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:38:01,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:38:01,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 708 transitions, 18615 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:01,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:38:01,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:38:01,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:38:04,972 INFO L124 PetriNetUnfolderBase]: 6686/11531 cut-off events. [2023-08-24 07:38:04,973 INFO L125 PetriNetUnfolderBase]: For 300324/300324 co-relation queries the response was YES. [2023-08-24 07:38:05,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91493 conditions, 11531 events. 6686/11531 cut-off events. For 300324/300324 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 85948 event pairs, 1744 based on Foata normal form. 8/11539 useless extension candidates. Maximal degree in co-relation 91360. Up to 7020 conditions per place. [2023-08-24 07:38:05,084 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 452 selfloop transitions, 352 changer transitions 0/804 dead transitions. [2023-08-24 07:38:05,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 804 transitions, 21457 flow [2023-08-24 07:38:05,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:38:05,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:38:05,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2017 transitions. [2023-08-24 07:38:05,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722775932078258 [2023-08-24 07:38:05,086 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2017 transitions. [2023-08-24 07:38:05,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2017 transitions. [2023-08-24 07:38:05,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:38:05,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2017 transitions. [2023-08-24 07:38:05,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.14285714285717) internal successors, (2017), 7 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:05,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:05,090 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:05,090 INFO L175 Difference]: Start difference. First operand has 306 places, 708 transitions, 18615 flow. Second operand 7 states and 2017 transitions. [2023-08-24 07:38:05,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 804 transitions, 21457 flow [2023-08-24 07:38:07,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 804 transitions, 21029 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-08-24 07:38:07,797 INFO L231 Difference]: Finished difference. Result has 311 places, 715 transitions, 19118 flow [2023-08-24 07:38:07,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=18189, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19118, PETRI_PLACES=311, PETRI_TRANSITIONS=715} [2023-08-24 07:38:07,798 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2023-08-24 07:38:07,798 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 715 transitions, 19118 flow [2023-08-24 07:38:07,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:07,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:38:07,798 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:38:07,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-24 07:38:07,798 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:38:07,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:38:07,799 INFO L85 PathProgramCache]: Analyzing trace with hash 492357670, now seen corresponding path program 25 times [2023-08-24 07:38:07,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:38:07,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922656125] [2023-08-24 07:38:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:38:07,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:38:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:38:08,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:38:08,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:38:08,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922656125] [2023-08-24 07:38:08,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922656125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:38:08,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:38:08,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:38:08,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206968739] [2023-08-24 07:38:08,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:38:08,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:38:08,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:38:08,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:38:08,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:38:08,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:38:08,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 715 transitions, 19118 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:08,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:38:08,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:38:08,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:38:11,337 INFO L124 PetriNetUnfolderBase]: 6662/11507 cut-off events. [2023-08-24 07:38:11,337 INFO L125 PetriNetUnfolderBase]: For 307107/307107 co-relation queries the response was YES. [2023-08-24 07:38:11,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92039 conditions, 11507 events. 6662/11507 cut-off events. For 307107/307107 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 85780 event pairs, 1606 based on Foata normal form. 24/11531 useless extension candidates. Maximal degree in co-relation 91904. Up to 4784 conditions per place. [2023-08-24 07:38:11,466 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 496 selfloop transitions, 311 changer transitions 0/807 dead transitions. [2023-08-24 07:38:11,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 807 transitions, 21811 flow [2023-08-24 07:38:11,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:38:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:38:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2011 transitions. [2023-08-24 07:38:11,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711701734957549 [2023-08-24 07:38:11,468 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2011 transitions. [2023-08-24 07:38:11,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2011 transitions. [2023-08-24 07:38:11,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:38:11,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2011 transitions. [2023-08-24 07:38:11,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.2857142857143) internal successors, (2011), 7 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:11,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:11,471 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:11,471 INFO L175 Difference]: Start difference. First operand has 311 places, 715 transitions, 19118 flow. Second operand 7 states and 2011 transitions. [2023-08-24 07:38:11,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 807 transitions, 21811 flow [2023-08-24 07:38:14,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 807 transitions, 21226 flow, removed 51 selfloop flow, removed 2 redundant places. [2023-08-24 07:38:14,367 INFO L231 Difference]: Finished difference. Result has 317 places, 722 transitions, 19438 flow [2023-08-24 07:38:14,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=18533, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19438, PETRI_PLACES=317, PETRI_TRANSITIONS=722} [2023-08-24 07:38:14,368 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2023-08-24 07:38:14,368 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 722 transitions, 19438 flow [2023-08-24 07:38:14,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:14,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:38:14,368 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:38:14,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-24 07:38:14,368 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:38:14,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:38:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash 208760539, now seen corresponding path program 23 times [2023-08-24 07:38:14,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:38:14,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887519995] [2023-08-24 07:38:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:38:14,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:38:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:38:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:38:14,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:38:14,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887519995] [2023-08-24 07:38:14,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887519995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:38:14,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:38:14,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:38:14,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67896174] [2023-08-24 07:38:14,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:38:14,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:38:14,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:38:14,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:38:14,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:38:14,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:38:14,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 722 transitions, 19438 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:14,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:38:14,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:38:14,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:38:18,047 INFO L124 PetriNetUnfolderBase]: 6687/11592 cut-off events. [2023-08-24 07:38:18,047 INFO L125 PetriNetUnfolderBase]: For 309582/309582 co-relation queries the response was YES. [2023-08-24 07:38:18,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92259 conditions, 11592 events. 6687/11592 cut-off events. For 309582/309582 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 87137 event pairs, 1662 based on Foata normal form. 4/11596 useless extension candidates. Maximal degree in co-relation 92122. Up to 6996 conditions per place. [2023-08-24 07:38:18,148 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 432 selfloop transitions, 369 changer transitions 5/806 dead transitions. [2023-08-24 07:38:18,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 806 transitions, 22126 flow [2023-08-24 07:38:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:38:18,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:38:18,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-08-24 07:38:18,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37024732373569585 [2023-08-24 07:38:18,150 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-08-24 07:38:18,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-08-24 07:38:18,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:38:18,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-08-24 07:38:18,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:18,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:18,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:18,154 INFO L175 Difference]: Start difference. First operand has 317 places, 722 transitions, 19438 flow. Second operand 7 states and 2006 transitions. [2023-08-24 07:38:18,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 806 transitions, 22126 flow [2023-08-24 07:38:20,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 806 transitions, 21562 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-24 07:38:20,577 INFO L231 Difference]: Finished difference. Result has 321 places, 729 transitions, 19923 flow [2023-08-24 07:38:20,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=18880, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19923, PETRI_PLACES=321, PETRI_TRANSITIONS=729} [2023-08-24 07:38:20,578 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2023-08-24 07:38:20,578 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 729 transitions, 19923 flow [2023-08-24 07:38:20,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:20,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:38:20,578 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:38:20,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-24 07:38:20,578 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:38:20,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:38:20,579 INFO L85 PathProgramCache]: Analyzing trace with hash -936770703, now seen corresponding path program 24 times [2023-08-24 07:38:20,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:38:20,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311661696] [2023-08-24 07:38:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:38:20,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:38:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:38:20,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:38:20,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:38:20,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311661696] [2023-08-24 07:38:20,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311661696] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:38:20,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:38:20,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:38:20,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515640082] [2023-08-24 07:38:20,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:38:20,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:38:20,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:38:20,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:38:20,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:38:20,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:38:20,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 729 transitions, 19923 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:20,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:38:20,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:38:20,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:38:24,265 INFO L124 PetriNetUnfolderBase]: 6702/11631 cut-off events. [2023-08-24 07:38:24,265 INFO L125 PetriNetUnfolderBase]: For 319319/319319 co-relation queries the response was YES. [2023-08-24 07:38:24,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93196 conditions, 11631 events. 6702/11631 cut-off events. For 319319/319319 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 87664 event pairs, 1676 based on Foata normal form. 4/11635 useless extension candidates. Maximal degree in co-relation 93058. Up to 6996 conditions per place. [2023-08-24 07:38:24,382 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 437 selfloop transitions, 370 changer transitions 1/808 dead transitions. [2023-08-24 07:38:24,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 808 transitions, 22424 flow [2023-08-24 07:38:24,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:38:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:38:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-08-24 07:38:24,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3708010335917313 [2023-08-24 07:38:24,384 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-08-24 07:38:24,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-08-24 07:38:24,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:38:24,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-08-24 07:38:24,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:24,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:24,388 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:24,389 INFO L175 Difference]: Start difference. First operand has 321 places, 729 transitions, 19923 flow. Second operand 7 states and 2009 transitions. [2023-08-24 07:38:24,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 808 transitions, 22424 flow [2023-08-24 07:38:27,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 808 transitions, 21888 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-24 07:38:27,195 INFO L231 Difference]: Finished difference. Result has 324 places, 732 transitions, 20219 flow [2023-08-24 07:38:27,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=19392, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20219, PETRI_PLACES=324, PETRI_TRANSITIONS=732} [2023-08-24 07:38:27,195 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2023-08-24 07:38:27,195 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 732 transitions, 20219 flow [2023-08-24 07:38:27,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:27,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:38:27,196 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:38:27,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-24 07:38:27,196 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:38:27,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:38:27,196 INFO L85 PathProgramCache]: Analyzing trace with hash 272641789, now seen corresponding path program 25 times [2023-08-24 07:38:27,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:38:27,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031544582] [2023-08-24 07:38:27,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:38:27,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:38:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:38:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:38:27,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:38:27,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031544582] [2023-08-24 07:38:27,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031544582] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:38:27,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:38:27,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:38:27,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964682678] [2023-08-24 07:38:27,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:38:27,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:38:27,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:38:27,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:38:27,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:38:27,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:38:27,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 732 transitions, 20219 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:27,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:38:27,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:38:27,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:38:30,751 INFO L124 PetriNetUnfolderBase]: 6688/11743 cut-off events. [2023-08-24 07:38:30,751 INFO L125 PetriNetUnfolderBase]: For 328907/328907 co-relation queries the response was YES. [2023-08-24 07:38:30,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93834 conditions, 11743 events. 6688/11743 cut-off events. For 328907/328907 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 89989 event pairs, 1664 based on Foata normal form. 4/11747 useless extension candidates. Maximal degree in co-relation 93696. Up to 6996 conditions per place. [2023-08-24 07:38:30,874 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 435 selfloop transitions, 383 changer transitions 2/820 dead transitions. [2023-08-24 07:38:30,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 820 transitions, 22922 flow [2023-08-24 07:38:30,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:38:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:38:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1969 transitions. [2023-08-24 07:38:30,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3634182355112588 [2023-08-24 07:38:30,876 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1969 transitions. [2023-08-24 07:38:30,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1969 transitions. [2023-08-24 07:38:30,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:38:30,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1969 transitions. [2023-08-24 07:38:30,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.2857142857143) internal successors, (1969), 7 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:30,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:30,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:30,880 INFO L175 Difference]: Start difference. First operand has 324 places, 732 transitions, 20219 flow. Second operand 7 states and 1969 transitions. [2023-08-24 07:38:30,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 820 transitions, 22922 flow [2023-08-24 07:38:33,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 820 transitions, 22255 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 07:38:34,040 INFO L231 Difference]: Finished difference. Result has 329 places, 744 transitions, 20719 flow [2023-08-24 07:38:34,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=19516, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20719, PETRI_PLACES=329, PETRI_TRANSITIONS=744} [2023-08-24 07:38:34,041 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2023-08-24 07:38:34,041 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 744 transitions, 20719 flow [2023-08-24 07:38:34,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:34,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:38:34,042 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:38:34,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-24 07:38:34,042 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:38:34,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:38:34,042 INFO L85 PathProgramCache]: Analyzing trace with hash -157032788, now seen corresponding path program 26 times [2023-08-24 07:38:34,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:38:34,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820275504] [2023-08-24 07:38:34,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:38:34,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:38:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:38:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:38:34,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:38:34,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820275504] [2023-08-24 07:38:34,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820275504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:38:34,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:38:34,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:38:34,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191116095] [2023-08-24 07:38:34,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:38:34,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:38:34,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:38:34,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:38:34,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:38:34,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:38:34,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 744 transitions, 20719 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:34,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:38:34,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:38:34,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:38:38,122 INFO L124 PetriNetUnfolderBase]: 6715/11782 cut-off events. [2023-08-24 07:38:38,122 INFO L125 PetriNetUnfolderBase]: For 335276/335276 co-relation queries the response was YES. [2023-08-24 07:38:38,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95578 conditions, 11782 events. 6715/11782 cut-off events. For 335276/335276 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 90191 event pairs, 1592 based on Foata normal form. 8/11790 useless extension candidates. Maximal degree in co-relation 95438. Up to 5011 conditions per place. [2023-08-24 07:38:38,231 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 520 selfloop transitions, 323 changer transitions 0/843 dead transitions. [2023-08-24 07:38:38,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 843 transitions, 23565 flow [2023-08-24 07:38:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:38:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:38:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2017 transitions. [2023-08-24 07:38:38,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722775932078258 [2023-08-24 07:38:38,233 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2017 transitions. [2023-08-24 07:38:38,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2017 transitions. [2023-08-24 07:38:38,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:38:38,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2017 transitions. [2023-08-24 07:38:38,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.14285714285717) internal successors, (2017), 7 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:38,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:38,236 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:38,236 INFO L175 Difference]: Start difference. First operand has 329 places, 744 transitions, 20719 flow. Second operand 7 states and 2017 transitions. [2023-08-24 07:38:38,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 843 transitions, 23565 flow [2023-08-24 07:38:40,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 843 transitions, 22895 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 07:38:40,850 INFO L231 Difference]: Finished difference. Result has 334 places, 752 transitions, 20959 flow [2023-08-24 07:38:40,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=20052, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20959, PETRI_PLACES=334, PETRI_TRANSITIONS=752} [2023-08-24 07:38:40,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2023-08-24 07:38:40,850 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 752 transitions, 20959 flow [2023-08-24 07:38:40,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:40,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:38:40,851 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:38:40,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-24 07:38:40,851 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:38:40,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:38:40,851 INFO L85 PathProgramCache]: Analyzing trace with hash 473325773, now seen corresponding path program 26 times [2023-08-24 07:38:40,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:38:40,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114987615] [2023-08-24 07:38:40,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:38:40,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:38:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:38:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:38:41,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:38:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114987615] [2023-08-24 07:38:41,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114987615] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:38:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575007322] [2023-08-24 07:38:41,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 07:38:41,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:38:41,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:38:41,153 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:38:41,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 07:38:41,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 07:38:41,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:38:41,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-24 07:38:41,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:38:41,516 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:38:41,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:38:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:38:41,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575007322] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 07:38:41,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 07:38:41,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-08-24 07:38:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244423380] [2023-08-24 07:38:41,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:38:41,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:38:41,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:38:41,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:38:41,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-08-24 07:38:41,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:38:41,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 752 transitions, 20959 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:41,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:38:41,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:38:41,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:38:45,250 INFO L124 PetriNetUnfolderBase]: 6700/11735 cut-off events. [2023-08-24 07:38:45,251 INFO L125 PetriNetUnfolderBase]: For 339855/339855 co-relation queries the response was YES. [2023-08-24 07:38:45,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95828 conditions, 11735 events. 6700/11735 cut-off events. For 339855/339855 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 89583 event pairs, 1734 based on Foata normal form. 4/11739 useless extension candidates. Maximal degree in co-relation 95686. Up to 7040 conditions per place. [2023-08-24 07:38:45,372 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 469 selfloop transitions, 363 changer transitions 1/833 dead transitions. [2023-08-24 07:38:45,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 833 transitions, 23379 flow [2023-08-24 07:38:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:38:45,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:38:45,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2017 transitions. [2023-08-24 07:38:45,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722775932078258 [2023-08-24 07:38:45,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2017 transitions. [2023-08-24 07:38:45,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2017 transitions. [2023-08-24 07:38:45,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:38:45,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2017 transitions. [2023-08-24 07:38:45,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.14285714285717) internal successors, (2017), 7 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:45,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:45,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:45,378 INFO L175 Difference]: Start difference. First operand has 334 places, 752 transitions, 20959 flow. Second operand 7 states and 2017 transitions. [2023-08-24 07:38:45,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 833 transitions, 23379 flow [2023-08-24 07:38:48,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 833 transitions, 22947 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-24 07:38:48,381 INFO L231 Difference]: Finished difference. Result has 337 places, 753 transitions, 21227 flow [2023-08-24 07:38:48,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=20446, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21227, PETRI_PLACES=337, PETRI_TRANSITIONS=753} [2023-08-24 07:38:48,382 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2023-08-24 07:38:48,382 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 753 transitions, 21227 flow [2023-08-24 07:38:48,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:48,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:38:48,382 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:38:48,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 07:38:48,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:38:48,587 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:38:48,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:38:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1453628880, now seen corresponding path program 27 times [2023-08-24 07:38:48,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:38:48,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584279902] [2023-08-24 07:38:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:38:48,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:38:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:38:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:38:48,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:38:48,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584279902] [2023-08-24 07:38:48,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584279902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:38:48,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:38:48,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:38:48,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244793711] [2023-08-24 07:38:48,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:38:48,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:38:48,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:38:48,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:38:48,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:38:48,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:38:48,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 753 transitions, 21227 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:48,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:38:48,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:38:48,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:38:52,159 INFO L124 PetriNetUnfolderBase]: 6684/11691 cut-off events. [2023-08-24 07:38:52,159 INFO L125 PetriNetUnfolderBase]: For 347644/347644 co-relation queries the response was YES. [2023-08-24 07:38:52,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96317 conditions, 11691 events. 6684/11691 cut-off events. For 347644/347644 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 88963 event pairs, 1498 based on Foata normal form. 8/11699 useless extension candidates. Maximal degree in co-relation 96176. Up to 3701 conditions per place. [2023-08-24 07:38:52,296 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 474 selfloop transitions, 378 changer transitions 1/853 dead transitions. [2023-08-24 07:38:52,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 853 transitions, 24086 flow [2023-08-24 07:38:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:38:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:38:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2016 transitions. [2023-08-24 07:38:52,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37209302325581395 [2023-08-24 07:38:52,298 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2016 transitions. [2023-08-24 07:38:52,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2016 transitions. [2023-08-24 07:38:52,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:38:52,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2016 transitions. [2023-08-24 07:38:52,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:52,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:52,302 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:52,302 INFO L175 Difference]: Start difference. First operand has 337 places, 753 transitions, 21227 flow. Second operand 7 states and 2016 transitions. [2023-08-24 07:38:52,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 853 transitions, 24086 flow [2023-08-24 07:38:55,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 853 transitions, 23352 flow, removed 30 selfloop flow, removed 3 redundant places. [2023-08-24 07:38:55,311 INFO L231 Difference]: Finished difference. Result has 340 places, 751 transitions, 21168 flow [2023-08-24 07:38:55,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=20412, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=378, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21168, PETRI_PLACES=340, PETRI_TRANSITIONS=751} [2023-08-24 07:38:55,311 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2023-08-24 07:38:55,311 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 751 transitions, 21168 flow [2023-08-24 07:38:55,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:55,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:38:55,312 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:38:55,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-24 07:38:55,312 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:38:55,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:38:55,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1050853285, now seen corresponding path program 27 times [2023-08-24 07:38:55,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:38:55,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520802113] [2023-08-24 07:38:55,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:38:55,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:38:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:38:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:38:55,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:38:55,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520802113] [2023-08-24 07:38:55,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520802113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:38:55,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:38:55,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:38:55,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044263607] [2023-08-24 07:38:55,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:38:55,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:38:55,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:38:55,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:38:55,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:38:55,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:38:55,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 751 transitions, 21168 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:55,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:38:55,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:38:55,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:38:59,322 INFO L124 PetriNetUnfolderBase]: 6643/11590 cut-off events. [2023-08-24 07:38:59,322 INFO L125 PetriNetUnfolderBase]: For 347729/347729 co-relation queries the response was YES. [2023-08-24 07:38:59,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95559 conditions, 11590 events. 6643/11590 cut-off events. For 347729/347729 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 87838 event pairs, 1740 based on Foata normal form. 26/11616 useless extension candidates. Maximal degree in co-relation 95418. Up to 6996 conditions per place. [2023-08-24 07:38:59,433 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 459 selfloop transitions, 366 changer transitions 1/826 dead transitions. [2023-08-24 07:38:59,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 826 transitions, 23608 flow [2023-08-24 07:38:59,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:38:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:38:59,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2015 transitions. [2023-08-24 07:38:59,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3719084533038021 [2023-08-24 07:38:59,437 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2015 transitions. [2023-08-24 07:38:59,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2015 transitions. [2023-08-24 07:38:59,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:38:59,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2015 transitions. [2023-08-24 07:38:59,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.85714285714283) internal successors, (2015), 7 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:59,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:59,441 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:38:59,441 INFO L175 Difference]: Start difference. First operand has 340 places, 751 transitions, 21168 flow. Second operand 7 states and 2015 transitions. [2023-08-24 07:38:59,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 826 transitions, 23608 flow [2023-08-24 07:39:02,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 826 transitions, 22894 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 07:39:02,422 INFO L231 Difference]: Finished difference. Result has 344 places, 754 transitions, 21305 flow [2023-08-24 07:39:02,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=20444, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21305, PETRI_PLACES=344, PETRI_TRANSITIONS=754} [2023-08-24 07:39:02,423 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2023-08-24 07:39:02,423 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 754 transitions, 21305 flow [2023-08-24 07:39:02,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:02,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:39:02,423 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:39:02,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-24 07:39:02,423 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:39:02,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:39:02,423 INFO L85 PathProgramCache]: Analyzing trace with hash -681901774, now seen corresponding path program 28 times [2023-08-24 07:39:02,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:39:02,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386475176] [2023-08-24 07:39:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:39:02,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:39:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:39:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:39:02,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:39:02,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386475176] [2023-08-24 07:39:02,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386475176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:39:02,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:39:02,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:39:02,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271763891] [2023-08-24 07:39:02,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:39:02,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:39:02,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:39:02,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:39:02,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:39:02,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:39:02,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 754 transitions, 21305 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:02,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:39:02,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:39:02,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:39:06,443 INFO L124 PetriNetUnfolderBase]: 7117/12494 cut-off events. [2023-08-24 07:39:06,443 INFO L125 PetriNetUnfolderBase]: For 363719/363719 co-relation queries the response was YES. [2023-08-24 07:39:06,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101947 conditions, 12494 events. 7117/12494 cut-off events. For 363719/363719 co-relation queries the response was YES. Maximal size of possible extension queue 807. Compared 96635 event pairs, 1566 based on Foata normal form. 8/12502 useless extension candidates. Maximal degree in co-relation 101804. Up to 3701 conditions per place. [2023-08-24 07:39:06,585 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 501 selfloop transitions, 376 changer transitions 1/878 dead transitions. [2023-08-24 07:39:06,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 878 transitions, 24823 flow [2023-08-24 07:39:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:39:06,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:39:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2015 transitions. [2023-08-24 07:39:06,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3719084533038021 [2023-08-24 07:39:06,587 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2015 transitions. [2023-08-24 07:39:06,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2015 transitions. [2023-08-24 07:39:06,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:39:06,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2015 transitions. [2023-08-24 07:39:06,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.85714285714283) internal successors, (2015), 7 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:06,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:06,591 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:06,591 INFO L175 Difference]: Start difference. First operand has 344 places, 754 transitions, 21305 flow. Second operand 7 states and 2015 transitions. [2023-08-24 07:39:06,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 878 transitions, 24823 flow [2023-08-24 07:39:10,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 878 transitions, 24114 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-24 07:39:10,207 INFO L231 Difference]: Finished difference. Result has 349 places, 763 transitions, 21903 flow [2023-08-24 07:39:10,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=20596, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21903, PETRI_PLACES=349, PETRI_TRANSITIONS=763} [2023-08-24 07:39:10,217 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2023-08-24 07:39:10,217 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 763 transitions, 21903 flow [2023-08-24 07:39:10,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:10,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:39:10,218 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:39:10,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-24 07:39:10,218 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:39:10,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:39:10,218 INFO L85 PathProgramCache]: Analyzing trace with hash 646399650, now seen corresponding path program 29 times [2023-08-24 07:39:10,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:39:10,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889899610] [2023-08-24 07:39:10,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:39:10,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:39:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:39:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:39:10,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:39:10,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889899610] [2023-08-24 07:39:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889899610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:39:10,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:39:10,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:39:10,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723691318] [2023-08-24 07:39:10,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:39:10,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:39:10,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:39:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:39:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:39:10,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:39:10,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 763 transitions, 21903 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:10,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:39:10,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:39:10,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:39:14,589 INFO L124 PetriNetUnfolderBase]: 7102/12453 cut-off events. [2023-08-24 07:39:14,590 INFO L125 PetriNetUnfolderBase]: For 374944/374944 co-relation queries the response was YES. [2023-08-24 07:39:14,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102166 conditions, 12453 events. 7102/12453 cut-off events. For 374944/374944 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 96060 event pairs, 1732 based on Foata normal form. 8/12461 useless extension candidates. Maximal degree in co-relation 102020. Up to 5725 conditions per place. [2023-08-24 07:39:14,711 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 521 selfloop transitions, 337 changer transitions 0/858 dead transitions. [2023-08-24 07:39:14,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 858 transitions, 24715 flow [2023-08-24 07:39:14,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:39:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:39:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2019 transitions. [2023-08-24 07:39:14,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37264673311184937 [2023-08-24 07:39:14,713 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2019 transitions. [2023-08-24 07:39:14,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2019 transitions. [2023-08-24 07:39:14,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:39:14,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2019 transitions. [2023-08-24 07:39:14,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:14,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:14,717 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:14,717 INFO L175 Difference]: Start difference. First operand has 349 places, 763 transitions, 21903 flow. Second operand 7 states and 2019 transitions. [2023-08-24 07:39:14,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 858 transitions, 24715 flow [2023-08-24 07:39:18,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 858 transitions, 23941 flow, removed 30 selfloop flow, removed 9 redundant places. [2023-08-24 07:39:18,070 INFO L231 Difference]: Finished difference. Result has 347 places, 766 transitions, 21995 flow [2023-08-24 07:39:18,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=21050, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21995, PETRI_PLACES=347, PETRI_TRANSITIONS=766} [2023-08-24 07:39:18,070 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2023-08-24 07:39:18,070 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 766 transitions, 21995 flow [2023-08-24 07:39:18,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:18,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:39:18,071 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:39:18,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-08-24 07:39:18,071 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:39:18,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:39:18,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1391677315, now seen corresponding path program 28 times [2023-08-24 07:39:18,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:39:18,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702825081] [2023-08-24 07:39:18,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:39:18,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:39:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:39:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:39:18,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:39:18,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702825081] [2023-08-24 07:39:18,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702825081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:39:18,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:39:18,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:39:18,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644627351] [2023-08-24 07:39:18,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:39:18,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:39:18,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:39:18,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:39:18,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:39:18,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:39:18,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 766 transitions, 21995 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:18,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:39:18,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:39:18,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:39:22,163 INFO L124 PetriNetUnfolderBase]: 7092/12431 cut-off events. [2023-08-24 07:39:22,163 INFO L125 PetriNetUnfolderBase]: For 370543/370543 co-relation queries the response was YES. [2023-08-24 07:39:22,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101985 conditions, 12431 events. 7092/12431 cut-off events. For 370543/370543 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 96770 event pairs, 798 based on Foata normal form. 4/12435 useless extension candidates. Maximal degree in co-relation 101844. Up to 4758 conditions per place. [2023-08-24 07:39:22,288 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 443 selfloop transitions, 468 changer transitions 1/912 dead transitions. [2023-08-24 07:39:22,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 912 transitions, 25887 flow [2023-08-24 07:39:22,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 07:39:22,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 07:39:22,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3075 transitions. [2023-08-24 07:39:22,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36116983791402396 [2023-08-24 07:39:22,291 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3075 transitions. [2023-08-24 07:39:22,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3075 transitions. [2023-08-24 07:39:22,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:39:22,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3075 transitions. [2023-08-24 07:39:22,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 279.54545454545456) internal successors, (3075), 11 states have internal predecessors, (3075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:22,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 774.0) internal successors, (9288), 12 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:22,297 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 774.0) internal successors, (9288), 12 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:22,297 INFO L175 Difference]: Start difference. First operand has 347 places, 766 transitions, 21995 flow. Second operand 11 states and 3075 transitions. [2023-08-24 07:39:22,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 912 transitions, 25887 flow [2023-08-24 07:39:25,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 912 transitions, 25258 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-24 07:39:25,686 INFO L231 Difference]: Finished difference. Result has 353 places, 798 transitions, 23106 flow [2023-08-24 07:39:25,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=21332, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=765, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=434, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23106, PETRI_PLACES=353, PETRI_TRANSITIONS=798} [2023-08-24 07:39:25,687 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2023-08-24 07:39:25,687 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 798 transitions, 23106 flow [2023-08-24 07:39:25,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:25,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:39:25,688 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:39:25,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-08-24 07:39:25,688 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:39:25,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:39:25,688 INFO L85 PathProgramCache]: Analyzing trace with hash -84030622, now seen corresponding path program 30 times [2023-08-24 07:39:25,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:39:25,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772437085] [2023-08-24 07:39:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:39:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:39:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:39:25,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:39:25,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:39:25,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772437085] [2023-08-24 07:39:25,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772437085] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:39:25,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:39:25,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:39:25,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998777936] [2023-08-24 07:39:25,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:39:25,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:39:25,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:39:25,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:39:25,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:39:25,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:39:25,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 798 transitions, 23106 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:25,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:39:25,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:39:25,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:39:30,383 INFO L124 PetriNetUnfolderBase]: 7073/12394 cut-off events. [2023-08-24 07:39:30,383 INFO L125 PetriNetUnfolderBase]: For 365299/365299 co-relation queries the response was YES. [2023-08-24 07:39:30,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102761 conditions, 12394 events. 7073/12394 cut-off events. For 365299/365299 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 95846 event pairs, 743 based on Foata normal form. 6/12400 useless extension candidates. Maximal degree in co-relation 102620. Up to 4984 conditions per place. [2023-08-24 07:39:30,583 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 527 selfloop transitions, 366 changer transitions 1/894 dead transitions. [2023-08-24 07:39:30,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 894 transitions, 25979 flow [2023-08-24 07:39:30,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 07:39:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 07:39:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2249 transitions. [2023-08-24 07:39:30,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3632105943152455 [2023-08-24 07:39:30,586 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2249 transitions. [2023-08-24 07:39:30,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2249 transitions. [2023-08-24 07:39:30,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:39:30,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2249 transitions. [2023-08-24 07:39:30,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.125) internal successors, (2249), 8 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:30,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 774.0) internal successors, (6966), 9 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:30,591 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 774.0) internal successors, (6966), 9 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:30,591 INFO L175 Difference]: Start difference. First operand has 353 places, 798 transitions, 23106 flow. Second operand 8 states and 2249 transitions. [2023-08-24 07:39:30,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 894 transitions, 25979 flow [2023-08-24 07:39:33,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 894 transitions, 25404 flow, removed 67 selfloop flow, removed 4 redundant places. [2023-08-24 07:39:34,013 INFO L231 Difference]: Finished difference. Result has 356 places, 802 transitions, 23307 flow [2023-08-24 07:39:34,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=22521, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=23307, PETRI_PLACES=356, PETRI_TRANSITIONS=802} [2023-08-24 07:39:34,014 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2023-08-24 07:39:34,014 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 802 transitions, 23307 flow [2023-08-24 07:39:34,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:34,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:39:34,014 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:39:34,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-08-24 07:39:34,015 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:39:34,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:39:34,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1005745808, now seen corresponding path program 31 times [2023-08-24 07:39:34,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:39:34,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215470237] [2023-08-24 07:39:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:39:34,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:39:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:39:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:39:34,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:39:34,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215470237] [2023-08-24 07:39:34,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215470237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:39:34,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:39:34,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:39:34,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367393385] [2023-08-24 07:39:34,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:39:34,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:39:34,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:39:34,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:39:34,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:39:34,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:39:34,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 802 transitions, 23307 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:34,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:39:34,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:39:34,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:39:38,487 INFO L124 PetriNetUnfolderBase]: 7074/12383 cut-off events. [2023-08-24 07:39:38,487 INFO L125 PetriNetUnfolderBase]: For 371144/371144 co-relation queries the response was YES. [2023-08-24 07:39:38,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103243 conditions, 12383 events. 7074/12383 cut-off events. For 371144/371144 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 95200 event pairs, 1760 based on Foata normal form. 4/12387 useless extension candidates. Maximal degree in co-relation 103104. Up to 5703 conditions per place. [2023-08-24 07:39:38,614 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 544 selfloop transitions, 340 changer transitions 0/884 dead transitions. [2023-08-24 07:39:38,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 884 transitions, 25974 flow [2023-08-24 07:39:38,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:39:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:39:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-08-24 07:39:38,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3713547434477667 [2023-08-24 07:39:38,616 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-08-24 07:39:38,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-08-24 07:39:38,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:39:38,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-08-24 07:39:38,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:38,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:38,621 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:38,621 INFO L175 Difference]: Start difference. First operand has 356 places, 802 transitions, 23307 flow. Second operand 7 states and 2012 transitions. [2023-08-24 07:39:38,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 884 transitions, 25974 flow [2023-08-24 07:39:41,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 884 transitions, 25387 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-08-24 07:39:41,880 INFO L231 Difference]: Finished difference. Result has 356 places, 805 transitions, 23506 flow [2023-08-24 07:39:41,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=22632, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=334, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23506, PETRI_PLACES=356, PETRI_TRANSITIONS=805} [2023-08-24 07:39:41,880 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2023-08-24 07:39:41,881 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 805 transitions, 23506 flow [2023-08-24 07:39:41,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:41,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:39:41,881 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:39:41,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-24 07:39:41,881 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:39:41,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:39:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash 907753765, now seen corresponding path program 29 times [2023-08-24 07:39:41,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:39:41,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229422555] [2023-08-24 07:39:41,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:39:41,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:39:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:39:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:39:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:39:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229422555] [2023-08-24 07:39:42,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229422555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:39:42,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:39:42,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:39:42,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108433057] [2023-08-24 07:39:42,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:39:42,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:39:42,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:39:42,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:39:42,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:39:42,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:39:42,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 805 transitions, 23506 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:42,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:39:42,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:39:42,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:39:46,333 INFO L124 PetriNetUnfolderBase]: 7054/12339 cut-off events. [2023-08-24 07:39:46,334 INFO L125 PetriNetUnfolderBase]: For 374881/374881 co-relation queries the response was YES. [2023-08-24 07:39:46,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101750 conditions, 12339 events. 7054/12339 cut-off events. For 374881/374881 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 94871 event pairs, 1878 based on Foata normal form. 8/12347 useless extension candidates. Maximal degree in co-relation 101612. Up to 7826 conditions per place. [2023-08-24 07:39:46,462 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 487 selfloop transitions, 388 changer transitions 1/876 dead transitions. [2023-08-24 07:39:46,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 876 transitions, 25893 flow [2023-08-24 07:39:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:39:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:39:46,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2015 transitions. [2023-08-24 07:39:46,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3719084533038021 [2023-08-24 07:39:46,464 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2015 transitions. [2023-08-24 07:39:46,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2015 transitions. [2023-08-24 07:39:46,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:39:46,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2015 transitions. [2023-08-24 07:39:46,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.85714285714283) internal successors, (2015), 7 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:46,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:46,468 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:46,468 INFO L175 Difference]: Start difference. First operand has 356 places, 805 transitions, 23506 flow. Second operand 7 states and 2015 transitions. [2023-08-24 07:39:46,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 876 transitions, 25893 flow [2023-08-24 07:39:49,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 876 transitions, 25207 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-24 07:39:49,697 INFO L231 Difference]: Finished difference. Result has 359 places, 808 transitions, 23687 flow [2023-08-24 07:39:49,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=22820, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=384, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23687, PETRI_PLACES=359, PETRI_TRANSITIONS=808} [2023-08-24 07:39:49,697 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2023-08-24 07:39:49,698 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 808 transitions, 23687 flow [2023-08-24 07:39:49,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:49,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:39:49,698 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:39:49,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-08-24 07:39:49,698 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:39:49,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:39:49,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1967917681, now seen corresponding path program 30 times [2023-08-24 07:39:49,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:39:49,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28376838] [2023-08-24 07:39:49,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:39:49,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:39:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:39:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:39:49,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:39:49,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28376838] [2023-08-24 07:39:49,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28376838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:39:49,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:39:49,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 07:39:49,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387684786] [2023-08-24 07:39:49,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:39:49,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 07:39:49,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:39:49,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 07:39:49,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-24 07:39:49,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:39:49,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 808 transitions, 23687 flow. Second operand has 8 states, 8 states have (on average 271.75) internal successors, (2174), 8 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:49,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:39:49,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:39:49,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:39:54,797 INFO L124 PetriNetUnfolderBase]: 7444/13093 cut-off events. [2023-08-24 07:39:54,797 INFO L125 PetriNetUnfolderBase]: For 398474/398474 co-relation queries the response was YES. [2023-08-24 07:39:54,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108060 conditions, 13093 events. 7444/13093 cut-off events. For 398474/398474 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 103367 event pairs, 946 based on Foata normal form. 10/13103 useless extension candidates. Maximal degree in co-relation 107920. Up to 5472 conditions per place. [2023-08-24 07:39:55,022 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 443 selfloop transitions, 519 changer transitions 0/962 dead transitions. [2023-08-24 07:39:55,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 962 transitions, 28102 flow [2023-08-24 07:39:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 07:39:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 07:39:55,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2536 transitions. [2023-08-24 07:39:55,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640539764570772 [2023-08-24 07:39:55,024 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2536 transitions. [2023-08-24 07:39:55,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2536 transitions. [2023-08-24 07:39:55,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:39:55,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2536 transitions. [2023-08-24 07:39:55,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 281.77777777777777) internal successors, (2536), 9 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:55,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 774.0) internal successors, (7740), 10 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:55,029 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 774.0) internal successors, (7740), 10 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:55,029 INFO L175 Difference]: Start difference. First operand has 359 places, 808 transitions, 23687 flow. Second operand 9 states and 2536 transitions. [2023-08-24 07:39:55,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 962 transitions, 28102 flow [2023-08-24 07:39:58,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 962 transitions, 27289 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-24 07:39:58,405 INFO L231 Difference]: Finished difference. Result has 365 places, 858 transitions, 25783 flow [2023-08-24 07:39:58,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=22882, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=467, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25783, PETRI_PLACES=365, PETRI_TRANSITIONS=858} [2023-08-24 07:39:58,406 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2023-08-24 07:39:58,406 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 858 transitions, 25783 flow [2023-08-24 07:39:58,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 271.75) internal successors, (2174), 8 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:58,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:39:58,406 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:39:58,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-08-24 07:39:58,406 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:39:58,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:39:58,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1682738265, now seen corresponding path program 31 times [2023-08-24 07:39:58,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:39:58,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286715245] [2023-08-24 07:39:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:39:58,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:39:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:39:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:39:58,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:39:58,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286715245] [2023-08-24 07:39:58,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286715245] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:39:58,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:39:58,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:39:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140115705] [2023-08-24 07:39:58,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:39:58,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:39:58,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:39:58,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:39:58,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:39:58,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:39:58,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 858 transitions, 25783 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:39:58,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:39:58,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:39:58,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:40:03,215 INFO L124 PetriNetUnfolderBase]: 7551/13318 cut-off events. [2023-08-24 07:40:03,216 INFO L125 PetriNetUnfolderBase]: For 458421/458421 co-relation queries the response was YES. [2023-08-24 07:40:03,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115882 conditions, 13318 events. 7551/13318 cut-off events. For 458421/458421 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 104820 event pairs, 1930 based on Foata normal form. 4/13322 useless extension candidates. Maximal degree in co-relation 115740. Up to 8404 conditions per place. [2023-08-24 07:40:03,362 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 476 selfloop transitions, 475 changer transitions 1/952 dead transitions. [2023-08-24 07:40:03,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 952 transitions, 29302 flow [2023-08-24 07:40:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:40:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:40:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1972 transitions. [2023-08-24 07:40:03,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3639719453672942 [2023-08-24 07:40:03,364 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1972 transitions. [2023-08-24 07:40:03,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1972 transitions. [2023-08-24 07:40:03,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:40:03,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1972 transitions. [2023-08-24 07:40:03,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.7142857142857) internal successors, (1972), 7 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:03,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:03,368 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:03,368 INFO L175 Difference]: Start difference. First operand has 365 places, 858 transitions, 25783 flow. Second operand 7 states and 1972 transitions. [2023-08-24 07:40:03,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 952 transitions, 29302 flow [2023-08-24 07:40:08,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 952 transitions, 29252 flow, removed 25 selfloop flow, removed 0 redundant places. [2023-08-24 07:40:08,464 INFO L231 Difference]: Finished difference. Result has 372 places, 892 transitions, 27967 flow [2023-08-24 07:40:08,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=25665, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=27967, PETRI_PLACES=372, PETRI_TRANSITIONS=892} [2023-08-24 07:40:08,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2023-08-24 07:40:08,465 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 892 transitions, 27967 flow [2023-08-24 07:40:08,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:08,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:40:08,465 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:40:08,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-08-24 07:40:08,465 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:40:08,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:40:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash 703705256, now seen corresponding path program 32 times [2023-08-24 07:40:08,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:40:08,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174249972] [2023-08-24 07:40:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:40:08,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:40:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:40:08,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:40:08,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:40:08,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174249972] [2023-08-24 07:40:08,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174249972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:40:08,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:40:08,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:40:08,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084639693] [2023-08-24 07:40:08,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:40:08,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:40:08,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:40:08,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:40:08,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:40:08,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:40:08,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 892 transitions, 27967 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:08,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:40:08,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:40:08,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:40:13,306 INFO L124 PetriNetUnfolderBase]: 7518/13253 cut-off events. [2023-08-24 07:40:13,306 INFO L125 PetriNetUnfolderBase]: For 469212/469212 co-relation queries the response was YES. [2023-08-24 07:40:13,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116944 conditions, 13253 events. 7518/13253 cut-off events. For 469212/469212 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 104371 event pairs, 805 based on Foata normal form. 12/13265 useless extension candidates. Maximal degree in co-relation 116800. Up to 5205 conditions per place. [2023-08-24 07:40:13,585 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 571 selfloop transitions, 419 changer transitions 1/991 dead transitions. [2023-08-24 07:40:13,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 991 transitions, 31234 flow [2023-08-24 07:40:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 07:40:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 07:40:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2247 transitions. [2023-08-24 07:40:13,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3628875968992248 [2023-08-24 07:40:13,587 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2247 transitions. [2023-08-24 07:40:13,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2247 transitions. [2023-08-24 07:40:13,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:40:13,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2247 transitions. [2023-08-24 07:40:13,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.875) internal successors, (2247), 8 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:13,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 774.0) internal successors, (6966), 9 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:13,592 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 774.0) internal successors, (6966), 9 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:13,592 INFO L175 Difference]: Start difference. First operand has 372 places, 892 transitions, 27967 flow. Second operand 8 states and 2247 transitions. [2023-08-24 07:40:13,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 991 transitions, 31234 flow [2023-08-24 07:40:18,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 991 transitions, 30587 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-24 07:40:18,091 INFO L231 Difference]: Finished difference. Result has 377 places, 889 transitions, 28057 flow [2023-08-24 07:40:18,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=27254, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=890, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=419, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28057, PETRI_PLACES=377, PETRI_TRANSITIONS=889} [2023-08-24 07:40:18,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-08-24 07:40:18,092 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 889 transitions, 28057 flow [2023-08-24 07:40:18,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:18,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:40:18,092 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:40:18,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-08-24 07:40:18,093 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:40:18,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:40:18,093 INFO L85 PathProgramCache]: Analyzing trace with hash 181496424, now seen corresponding path program 33 times [2023-08-24 07:40:18,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:40:18,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97395207] [2023-08-24 07:40:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:40:18,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:40:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:40:18,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:40:18,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:40:18,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97395207] [2023-08-24 07:40:18,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97395207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:40:18,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:40:18,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 07:40:18,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800523913] [2023-08-24 07:40:18,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:40:18,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 07:40:18,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:40:18,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 07:40:18,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-24 07:40:18,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:40:18,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 889 transitions, 28057 flow. Second operand has 8 states, 8 states have (on average 277.75) internal successors, (2222), 8 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:18,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:40:18,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:40:18,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:40:23,085 INFO L124 PetriNetUnfolderBase]: 7891/13950 cut-off events. [2023-08-24 07:40:23,085 INFO L125 PetriNetUnfolderBase]: For 491292/491292 co-relation queries the response was YES. [2023-08-24 07:40:23,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123396 conditions, 13950 events. 7891/13950 cut-off events. For 491292/491292 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 110827 event pairs, 1728 based on Foata normal form. 8/13958 useless extension candidates. Maximal degree in co-relation 123252. Up to 4103 conditions per place. [2023-08-24 07:40:23,229 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 590 selfloop transitions, 421 changer transitions 0/1011 dead transitions. [2023-08-24 07:40:23,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1011 transitions, 31863 flow [2023-08-24 07:40:23,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:40:23,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:40:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2013 transitions. [2023-08-24 07:40:23,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715393133997785 [2023-08-24 07:40:23,231 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2013 transitions. [2023-08-24 07:40:23,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2013 transitions. [2023-08-24 07:40:23,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:40:23,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2013 transitions. [2023-08-24 07:40:23,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.57142857142856) internal successors, (2013), 7 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:23,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:23,235 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:23,235 INFO L175 Difference]: Start difference. First operand has 377 places, 889 transitions, 28057 flow. Second operand 7 states and 2013 transitions. [2023-08-24 07:40:23,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1011 transitions, 31863 flow [2023-08-24 07:40:28,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1011 transitions, 31301 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-24 07:40:28,085 INFO L231 Difference]: Finished difference. Result has 381 places, 899 transitions, 28883 flow [2023-08-24 07:40:28,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=27405, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=886, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28883, PETRI_PLACES=381, PETRI_TRANSITIONS=899} [2023-08-24 07:40:28,086 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2023-08-24 07:40:28,086 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 899 transitions, 28883 flow [2023-08-24 07:40:28,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.75) internal successors, (2222), 8 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:28,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:40:28,087 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:40:28,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-08-24 07:40:28,087 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:40:28,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:40:28,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1958658531, now seen corresponding path program 32 times [2023-08-24 07:40:28,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:40:28,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236121487] [2023-08-24 07:40:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:40:28,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:40:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:40:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:40:28,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:40:28,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236121487] [2023-08-24 07:40:28,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236121487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:40:28,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:40:28,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:40:28,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286170698] [2023-08-24 07:40:28,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:40:28,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:40:28,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:40:28,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:40:28,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:40:28,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:40:28,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 899 transitions, 28883 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:28,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:40:28,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:40:28,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:40:33,189 INFO L124 PetriNetUnfolderBase]: 7871/13906 cut-off events. [2023-08-24 07:40:33,189 INFO L125 PetriNetUnfolderBase]: For 525974/525974 co-relation queries the response was YES. [2023-08-24 07:40:33,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123329 conditions, 13906 events. 7871/13906 cut-off events. For 525974/525974 co-relation queries the response was YES. Maximal size of possible extension queue 898. Compared 110361 event pairs, 2208 based on Foata normal form. 8/13914 useless extension candidates. Maximal degree in co-relation 123184. Up to 9050 conditions per place. [2023-08-24 07:40:33,320 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 499 selfloop transitions, 457 changer transitions 1/957 dead transitions. [2023-08-24 07:40:33,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 957 transitions, 31198 flow [2023-08-24 07:40:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:40:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:40:33,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-08-24 07:40:33,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3713547434477667 [2023-08-24 07:40:33,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-08-24 07:40:33,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-08-24 07:40:33,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:40:33,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-08-24 07:40:33,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:33,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:33,326 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:33,326 INFO L175 Difference]: Start difference. First operand has 381 places, 899 transitions, 28883 flow. Second operand 7 states and 2012 transitions. [2023-08-24 07:40:33,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 957 transitions, 31198 flow [2023-08-24 07:40:38,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 957 transitions, 30501 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-24 07:40:38,195 INFO L231 Difference]: Finished difference. Result has 384 places, 896 transitions, 29019 flow [2023-08-24 07:40:38,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=28136, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=457, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=29019, PETRI_PLACES=384, PETRI_TRANSITIONS=896} [2023-08-24 07:40:38,195 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2023-08-24 07:40:38,195 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 896 transitions, 29019 flow [2023-08-24 07:40:38,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:38,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:40:38,196 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:40:38,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-08-24 07:40:38,196 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:40:38,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:40:38,196 INFO L85 PathProgramCache]: Analyzing trace with hash -349992305, now seen corresponding path program 33 times [2023-08-24 07:40:38,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:40:38,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214526031] [2023-08-24 07:40:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:40:38,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:40:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:40:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:40:38,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:40:38,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214526031] [2023-08-24 07:40:38,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214526031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:40:38,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:40:38,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:40:38,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890347922] [2023-08-24 07:40:38,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:40:38,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:40:38,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:40:38,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:40:38,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:40:38,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:40:38,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 896 transitions, 29019 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:38,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:40:38,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:40:38,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:40:43,316 INFO L124 PetriNetUnfolderBase]: 7857/13868 cut-off events. [2023-08-24 07:40:43,317 INFO L125 PetriNetUnfolderBase]: For 509832/509832 co-relation queries the response was YES. [2023-08-24 07:40:43,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121675 conditions, 13868 events. 7857/13868 cut-off events. For 509832/509832 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 109805 event pairs, 2252 based on Foata normal form. 10/13878 useless extension candidates. Maximal degree in co-relation 121530. Up to 9050 conditions per place. [2023-08-24 07:40:43,459 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 493 selfloop transitions, 456 changer transitions 0/949 dead transitions. [2023-08-24 07:40:43,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 949 transitions, 31269 flow [2023-08-24 07:40:43,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:40:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:40:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-08-24 07:40:43,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37061646363971945 [2023-08-24 07:40:43,461 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-08-24 07:40:43,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-08-24 07:40:43,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:40:43,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-08-24 07:40:43,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:43,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:43,465 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:43,465 INFO L175 Difference]: Start difference. First operand has 384 places, 896 transitions, 29019 flow. Second operand 7 states and 2008 transitions. [2023-08-24 07:40:43,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 949 transitions, 31269 flow [2023-08-24 07:40:48,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 949 transitions, 30404 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-24 07:40:48,021 INFO L231 Difference]: Finished difference. Result has 385 places, 893 transitions, 28981 flow [2023-08-24 07:40:48,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=28069, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=456, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28981, PETRI_PLACES=385, PETRI_TRANSITIONS=893} [2023-08-24 07:40:48,021 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2023-08-24 07:40:48,021 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 893 transitions, 28981 flow [2023-08-24 07:40:48,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:48,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:40:48,022 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:40:48,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-08-24 07:40:48,022 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:40:48,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:40:48,022 INFO L85 PathProgramCache]: Analyzing trace with hash 184124611, now seen corresponding path program 34 times [2023-08-24 07:40:48,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:40:48,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656740643] [2023-08-24 07:40:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:40:48,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:40:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:40:48,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:40:48,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:40:48,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656740643] [2023-08-24 07:40:48,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656740643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:40:48,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:40:48,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 07:40:48,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096771725] [2023-08-24 07:40:48,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:40:48,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 07:40:48,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:40:48,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 07:40:48,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-24 07:40:48,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:40:48,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 893 transitions, 28981 flow. Second operand has 8 states, 8 states have (on average 277.75) internal successors, (2222), 8 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:48,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:40:48,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:40:48,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:40:53,040 INFO L124 PetriNetUnfolderBase]: 7780/13675 cut-off events. [2023-08-24 07:40:53,040 INFO L125 PetriNetUnfolderBase]: For 520118/520118 co-relation queries the response was YES. [2023-08-24 07:40:53,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120038 conditions, 13675 events. 7780/13675 cut-off events. For 520118/520118 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 107498 event pairs, 1527 based on Foata normal form. 54/13729 useless extension candidates. Maximal degree in co-relation 119894. Up to 6589 conditions per place. [2023-08-24 07:40:53,182 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 742 selfloop transitions, 279 changer transitions 3/1024 dead transitions. [2023-08-24 07:40:53,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 1024 transitions, 33248 flow [2023-08-24 07:40:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:40:53,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:40:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-08-24 07:40:53,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709856035437431 [2023-08-24 07:40:53,184 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-08-24 07:40:53,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-08-24 07:40:53,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:40:53,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-08-24 07:40:53,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:53,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:53,188 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:53,188 INFO L175 Difference]: Start difference. First operand has 385 places, 893 transitions, 28981 flow. Second operand 7 states and 2010 transitions. [2023-08-24 07:40:53,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 1024 transitions, 33248 flow [2023-08-24 07:40:57,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 1024 transitions, 32318 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-24 07:40:57,353 INFO L231 Difference]: Finished difference. Result has 387 places, 903 transitions, 28998 flow [2023-08-24 07:40:57,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=27887, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28998, PETRI_PLACES=387, PETRI_TRANSITIONS=903} [2023-08-24 07:40:57,354 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 357 predicate places. [2023-08-24 07:40:57,354 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 903 transitions, 28998 flow [2023-08-24 07:40:57,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.75) internal successors, (2222), 8 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:57,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:40:57,354 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:40:57,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-08-24 07:40:57,355 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:40:57,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:40:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash 510512263, now seen corresponding path program 35 times [2023-08-24 07:40:57,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:40:57,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523847933] [2023-08-24 07:40:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:40:57,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:40:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:40:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:40:57,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:40:57,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523847933] [2023-08-24 07:40:57,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523847933] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:40:57,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456519261] [2023-08-24 07:40:57,551 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 07:40:57,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:40:57,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:40:57,566 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:40:57,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 07:40:57,766 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 07:40:57,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:40:57,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 07:40:57,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:40:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:40:57,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:40:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:40:58,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456519261] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:40:58,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:40:58,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-24 07:40:58,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970305464] [2023-08-24 07:40:58,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:40:58,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 07:40:58,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:40:58,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 07:40:58,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-08-24 07:40:58,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 774 [2023-08-24 07:40:58,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 903 transitions, 28998 flow. Second operand has 16 states, 16 states have (on average 266.75) internal successors, (4268), 16 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:40:58,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:40:58,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 774 [2023-08-24 07:40:58,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:41:03,289 INFO L124 PetriNetUnfolderBase]: 7698/13469 cut-off events. [2023-08-24 07:41:03,289 INFO L125 PetriNetUnfolderBase]: For 510819/510819 co-relation queries the response was YES. [2023-08-24 07:41:03,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118621 conditions, 13469 events. 7698/13469 cut-off events. For 510819/510819 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 104834 event pairs, 1483 based on Foata normal form. 60/13529 useless extension candidates. Maximal degree in co-relation 118476. Up to 6589 conditions per place. [2023-08-24 07:41:03,415 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 737 selfloop transitions, 277 changer transitions 3/1017 dead transitions. [2023-08-24 07:41:03,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1017 transitions, 32763 flow [2023-08-24 07:41:03,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:41:03,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:41:03,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1936 transitions. [2023-08-24 07:41:03,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.357327427094869 [2023-08-24 07:41:03,417 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1936 transitions. [2023-08-24 07:41:03,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1936 transitions. [2023-08-24 07:41:03,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:41:03,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1936 transitions. [2023-08-24 07:41:03,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 276.57142857142856) internal successors, (1936), 7 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:03,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:03,420 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:03,420 INFO L175 Difference]: Start difference. First operand has 387 places, 903 transitions, 28998 flow. Second operand 7 states and 1936 transitions. [2023-08-24 07:41:03,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1017 transitions, 32763 flow [2023-08-24 07:41:07,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1017 transitions, 32286 flow, removed 38 selfloop flow, removed 3 redundant places. [2023-08-24 07:41:07,383 INFO L231 Difference]: Finished difference. Result has 390 places, 897 transitions, 28897 flow [2023-08-24 07:41:07,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=28343, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28897, PETRI_PLACES=390, PETRI_TRANSITIONS=897} [2023-08-24 07:41:07,383 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2023-08-24 07:41:07,383 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 897 transitions, 28897 flow [2023-08-24 07:41:07,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 266.75) internal successors, (4268), 16 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:07,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:41:07,384 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:41:07,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 07:41:07,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:41:07,589 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:41:07,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:41:07,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1409760049, now seen corresponding path program 36 times [2023-08-24 07:41:07,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:41:07,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119293125] [2023-08-24 07:41:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:41:07,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:41:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:41:07,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:41:07,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:41:07,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119293125] [2023-08-24 07:41:07,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119293125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:41:07,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:41:07,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:41:07,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932077157] [2023-08-24 07:41:07,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:41:07,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:41:07,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:41:07,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:41:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:41:07,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:41:07,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 897 transitions, 28897 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:07,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:41:07,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:41:07,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:41:13,036 INFO L124 PetriNetUnfolderBase]: 8449/14882 cut-off events. [2023-08-24 07:41:13,036 INFO L125 PetriNetUnfolderBase]: For 545058/545058 co-relation queries the response was YES. [2023-08-24 07:41:13,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129779 conditions, 14882 events. 8449/14882 cut-off events. For 545058/545058 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 118909 event pairs, 1687 based on Foata normal form. 16/14898 useless extension candidates. Maximal degree in co-relation 129634. Up to 7564 conditions per place. [2023-08-24 07:41:13,216 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 790 selfloop transitions, 263 changer transitions 3/1056 dead transitions. [2023-08-24 07:41:13,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1056 transitions, 34283 flow [2023-08-24 07:41:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:41:13,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:41:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2007 transitions. [2023-08-24 07:41:13,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704318936877076 [2023-08-24 07:41:13,218 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2007 transitions. [2023-08-24 07:41:13,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2007 transitions. [2023-08-24 07:41:13,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:41:13,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2007 transitions. [2023-08-24 07:41:13,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.7142857142857) internal successors, (2007), 7 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:13,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:13,221 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:13,221 INFO L175 Difference]: Start difference. First operand has 390 places, 897 transitions, 28897 flow. Second operand 7 states and 2007 transitions. [2023-08-24 07:41:13,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1056 transitions, 34283 flow [2023-08-24 07:41:18,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 1056 transitions, 33870 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 07:41:18,166 INFO L231 Difference]: Finished difference. Result has 397 places, 922 transitions, 30157 flow [2023-08-24 07:41:18,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=28496, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30157, PETRI_PLACES=397, PETRI_TRANSITIONS=922} [2023-08-24 07:41:18,167 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2023-08-24 07:41:18,167 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 922 transitions, 30157 flow [2023-08-24 07:41:18,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:18,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:41:18,167 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:41:18,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-08-24 07:41:18,167 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:41:18,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:41:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1148909225, now seen corresponding path program 37 times [2023-08-24 07:41:18,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:41:18,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205418546] [2023-08-24 07:41:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:41:18,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:41:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:41:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:41:18,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:41:18,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205418546] [2023-08-24 07:41:18,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205418546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:41:18,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:41:18,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:41:18,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770225454] [2023-08-24 07:41:18,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:41:18,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:41:18,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:41:18,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:41:18,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:41:18,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:41:18,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 922 transitions, 30157 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:18,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:41:18,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:41:18,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:41:24,160 INFO L124 PetriNetUnfolderBase]: 9101/16128 cut-off events. [2023-08-24 07:41:24,161 INFO L125 PetriNetUnfolderBase]: For 595754/595754 co-relation queries the response was YES. [2023-08-24 07:41:24,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141691 conditions, 16128 events. 9101/16128 cut-off events. For 595754/595754 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 131231 event pairs, 1990 based on Foata normal form. 32/16160 useless extension candidates. Maximal degree in co-relation 141542. Up to 7564 conditions per place. [2023-08-24 07:41:24,324 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 822 selfloop transitions, 290 changer transitions 2/1114 dead transitions. [2023-08-24 07:41:24,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 1114 transitions, 36422 flow [2023-08-24 07:41:24,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:41:24,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:41:24,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2015 transitions. [2023-08-24 07:41:24,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3719084533038021 [2023-08-24 07:41:24,325 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2015 transitions. [2023-08-24 07:41:24,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2015 transitions. [2023-08-24 07:41:24,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:41:24,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2015 transitions. [2023-08-24 07:41:24,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.85714285714283) internal successors, (2015), 7 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:24,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:24,329 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:24,329 INFO L175 Difference]: Start difference. First operand has 397 places, 922 transitions, 30157 flow. Second operand 7 states and 2015 transitions. [2023-08-24 07:41:24,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 1114 transitions, 36422 flow [2023-08-24 07:41:29,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 1114 transitions, 35823 flow, removed 61 selfloop flow, removed 3 redundant places. [2023-08-24 07:41:30,010 INFO L231 Difference]: Finished difference. Result has 403 places, 962 transitions, 31875 flow [2023-08-24 07:41:30,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=29517, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31875, PETRI_PLACES=403, PETRI_TRANSITIONS=962} [2023-08-24 07:41:30,011 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2023-08-24 07:41:30,011 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 962 transitions, 31875 flow [2023-08-24 07:41:30,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:30,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:41:30,012 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:41:30,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-08-24 07:41:30,012 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:41:30,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:41:30,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1971614927, now seen corresponding path program 38 times [2023-08-24 07:41:30,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:41:30,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648476636] [2023-08-24 07:41:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:41:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:41:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:41:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:41:30,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:41:30,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648476636] [2023-08-24 07:41:30,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648476636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:41:30,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:41:30,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:41:30,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642623386] [2023-08-24 07:41:30,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:41:30,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:41:30,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:41:30,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:41:30,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:41:30,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:41:30,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 962 transitions, 31875 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:30,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:41:30,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:41:30,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:41:36,184 INFO L124 PetriNetUnfolderBase]: 9104/16119 cut-off events. [2023-08-24 07:41:36,184 INFO L125 PetriNetUnfolderBase]: For 604281/604281 co-relation queries the response was YES. [2023-08-24 07:41:36,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142036 conditions, 16119 events. 9104/16119 cut-off events. For 604281/604281 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 131013 event pairs, 1824 based on Foata normal form. 12/16131 useless extension candidates. Maximal degree in co-relation 141884. Up to 9853 conditions per place. [2023-08-24 07:41:36,459 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 751 selfloop transitions, 313 changer transitions 2/1066 dead transitions. [2023-08-24 07:41:36,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 1066 transitions, 35474 flow [2023-08-24 07:41:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:41:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:41:36,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-08-24 07:41:36,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37024732373569585 [2023-08-24 07:41:36,461 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-08-24 07:41:36,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-08-24 07:41:36,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:41:36,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-08-24 07:41:36,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:36,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:36,465 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:36,465 INFO L175 Difference]: Start difference. First operand has 403 places, 962 transitions, 31875 flow. Second operand 7 states and 2006 transitions. [2023-08-24 07:41:36,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 1066 transitions, 35474 flow [2023-08-24 07:41:41,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 1066 transitions, 35205 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-24 07:41:42,015 INFO L231 Difference]: Finished difference. Result has 409 places, 966 transitions, 32553 flow [2023-08-24 07:41:42,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=31551, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32553, PETRI_PLACES=409, PETRI_TRANSITIONS=966} [2023-08-24 07:41:42,015 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2023-08-24 07:41:42,015 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 966 transitions, 32553 flow [2023-08-24 07:41:42,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:42,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:41:42,016 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:41:42,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-08-24 07:41:42,016 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:41:42,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:41:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash -795106087, now seen corresponding path program 39 times [2023-08-24 07:41:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:41:42,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418958978] [2023-08-24 07:41:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:41:42,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:41:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:41:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:41:42,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:41:42,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418958978] [2023-08-24 07:41:42,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418958978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:41:42,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:41:42,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:41:42,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964317671] [2023-08-24 07:41:42,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:41:42,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:41:42,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:41:42,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:41:42,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:41:42,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:41:42,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 966 transitions, 32553 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:42,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:41:42,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:41:42,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:41:48,304 INFO L124 PetriNetUnfolderBase]: 9065/15996 cut-off events. [2023-08-24 07:41:48,305 INFO L125 PetriNetUnfolderBase]: For 624971/624971 co-relation queries the response was YES. [2023-08-24 07:41:48,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143074 conditions, 15996 events. 9065/15996 cut-off events. For 624971/624971 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 129230 event pairs, 1852 based on Foata normal form. 12/16008 useless extension candidates. Maximal degree in co-relation 142920. Up to 9853 conditions per place. [2023-08-24 07:41:48,462 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 744 selfloop transitions, 311 changer transitions 2/1057 dead transitions. [2023-08-24 07:41:48,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1057 transitions, 35764 flow [2023-08-24 07:41:48,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:41:48,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:41:48,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2007 transitions. [2023-08-24 07:41:48,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704318936877076 [2023-08-24 07:41:48,464 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2007 transitions. [2023-08-24 07:41:48,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2007 transitions. [2023-08-24 07:41:48,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:41:48,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2007 transitions. [2023-08-24 07:41:48,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.7142857142857) internal successors, (2007), 7 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:48,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:48,468 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:48,468 INFO L175 Difference]: Start difference. First operand has 409 places, 966 transitions, 32553 flow. Second operand 7 states and 2007 transitions. [2023-08-24 07:41:48,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1057 transitions, 35764 flow [2023-08-24 07:41:53,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 1057 transitions, 35274 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-24 07:41:53,726 INFO L231 Difference]: Finished difference. Result has 412 places, 960 transitions, 32484 flow [2023-08-24 07:41:53,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=31862, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32484, PETRI_PLACES=412, PETRI_TRANSITIONS=960} [2023-08-24 07:41:53,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2023-08-24 07:41:53,726 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 960 transitions, 32484 flow [2023-08-24 07:41:53,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:53,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:41:53,727 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:41:53,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-08-24 07:41:53,727 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:41:53,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:41:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2131872087, now seen corresponding path program 40 times [2023-08-24 07:41:53,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:41:53,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974414835] [2023-08-24 07:41:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:41:53,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:41:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:41:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:41:54,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:41:54,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974414835] [2023-08-24 07:41:54,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974414835] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:41:54,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:41:54,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:41:54,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612528953] [2023-08-24 07:41:54,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:41:54,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:41:54,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:41:54,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:41:54,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:41:54,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:41:54,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 960 transitions, 32484 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:41:54,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:41:54,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:41:54,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:41:59,843 INFO L124 PetriNetUnfolderBase]: 9019/15882 cut-off events. [2023-08-24 07:41:59,844 INFO L125 PetriNetUnfolderBase]: For 630342/630342 co-relation queries the response was YES. [2023-08-24 07:41:59,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142160 conditions, 15882 events. 9019/15882 cut-off events. For 630342/630342 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 127850 event pairs, 1956 based on Foata normal form. 32/15914 useless extension candidates. Maximal degree in co-relation 142006. Up to 7572 conditions per place. [2023-08-24 07:42:00,001 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 805 selfloop transitions, 283 changer transitions 2/1090 dead transitions. [2023-08-24 07:42:00,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 1090 transitions, 36875 flow [2023-08-24 07:42:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:42:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:42:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-08-24 07:42:00,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3713547434477667 [2023-08-24 07:42:00,003 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-08-24 07:42:00,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-08-24 07:42:00,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:42:00,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-08-24 07:42:00,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:00,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:00,009 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:00,009 INFO L175 Difference]: Start difference. First operand has 412 places, 960 transitions, 32484 flow. Second operand 7 states and 2012 transitions. [2023-08-24 07:42:00,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 1090 transitions, 36875 flow [2023-08-24 07:42:05,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 1090 transitions, 36379 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-24 07:42:05,285 INFO L231 Difference]: Finished difference. Result has 415 places, 961 transitions, 32687 flow [2023-08-24 07:42:05,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=31911, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32687, PETRI_PLACES=415, PETRI_TRANSITIONS=961} [2023-08-24 07:42:05,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 385 predicate places. [2023-08-24 07:42:05,291 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 961 transitions, 32687 flow [2023-08-24 07:42:05,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:05,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:42:05,291 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:42:05,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-08-24 07:42:05,292 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:42:05,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:42:05,292 INFO L85 PathProgramCache]: Analyzing trace with hash 577231116, now seen corresponding path program 34 times [2023-08-24 07:42:05,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:42:05,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460863078] [2023-08-24 07:42:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:42:05,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:42:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:42:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:42:05,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:42:05,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460863078] [2023-08-24 07:42:05,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460863078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:42:05,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:42:05,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:42:05,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771395795] [2023-08-24 07:42:05,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:42:05,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:42:05,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:42:05,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:42:05,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:42:05,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:42:05,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 961 transitions, 32687 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:05,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:42:05,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:42:05,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:42:11,688 INFO L124 PetriNetUnfolderBase]: 9312/16507 cut-off events. [2023-08-24 07:42:11,689 INFO L125 PetriNetUnfolderBase]: For 659670/659670 co-relation queries the response was YES. [2023-08-24 07:42:11,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146932 conditions, 16507 events. 9312/16507 cut-off events. For 659670/659670 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 134781 event pairs, 3370 based on Foata normal form. 6/16513 useless extension candidates. Maximal degree in co-relation 146778. Up to 11617 conditions per place. [2023-08-24 07:42:11,964 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 817 selfloop transitions, 238 changer transitions 9/1064 dead transitions. [2023-08-24 07:42:11,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1064 transitions, 36311 flow [2023-08-24 07:42:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:42:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:42:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2014 transitions. [2023-08-24 07:42:11,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37172388335179035 [2023-08-24 07:42:11,966 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2014 transitions. [2023-08-24 07:42:11,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2014 transitions. [2023-08-24 07:42:11,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:42:11,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2014 transitions. [2023-08-24 07:42:11,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.7142857142857) internal successors, (2014), 7 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:11,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:11,970 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:11,970 INFO L175 Difference]: Start difference. First operand has 415 places, 961 transitions, 32687 flow. Second operand 7 states and 2014 transitions. [2023-08-24 07:42:11,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1064 transitions, 36311 flow [2023-08-24 07:42:17,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 1064 transitions, 35807 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 07:42:17,563 INFO L231 Difference]: Finished difference. Result has 420 places, 974 transitions, 33177 flow [2023-08-24 07:42:17,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=32199, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33177, PETRI_PLACES=420, PETRI_TRANSITIONS=974} [2023-08-24 07:42:17,564 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2023-08-24 07:42:17,564 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 974 transitions, 33177 flow [2023-08-24 07:42:17,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:17,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:42:17,565 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:42:17,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-08-24 07:42:17,565 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:42:17,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:42:17,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1065219154, now seen corresponding path program 35 times [2023-08-24 07:42:17,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:42:17,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609333911] [2023-08-24 07:42:17,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:42:17,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:42:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:42:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:42:17,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:42:17,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609333911] [2023-08-24 07:42:17,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609333911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:42:17,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:42:17,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:42:17,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118954736] [2023-08-24 07:42:17,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:42:17,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:42:17,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:42:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:42:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:42:17,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:42:17,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 974 transitions, 33177 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:17,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:42:17,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:42:17,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:42:24,057 INFO L124 PetriNetUnfolderBase]: 9346/16591 cut-off events. [2023-08-24 07:42:24,057 INFO L125 PetriNetUnfolderBase]: For 664153/664153 co-relation queries the response was YES. [2023-08-24 07:42:24,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147612 conditions, 16591 events. 9346/16591 cut-off events. For 664153/664153 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 135886 event pairs, 3406 based on Foata normal form. 18/16609 useless extension candidates. Maximal degree in co-relation 147455. Up to 11617 conditions per place. [2023-08-24 07:42:24,231 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 823 selfloop transitions, 239 changer transitions 1/1063 dead transitions. [2023-08-24 07:42:24,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 1063 transitions, 36330 flow [2023-08-24 07:42:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:42:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:42:24,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2016 transitions. [2023-08-24 07:42:24,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37209302325581395 [2023-08-24 07:42:24,233 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2016 transitions. [2023-08-24 07:42:24,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2016 transitions. [2023-08-24 07:42:24,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:42:24,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2016 transitions. [2023-08-24 07:42:24,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:24,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:24,237 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:24,237 INFO L175 Difference]: Start difference. First operand has 420 places, 974 transitions, 33177 flow. Second operand 7 states and 2016 transitions. [2023-08-24 07:42:24,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 1063 transitions, 36330 flow [2023-08-24 07:42:29,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 1063 transitions, 35914 flow, removed 122 selfloop flow, removed 3 redundant places. [2023-08-24 07:42:29,905 INFO L231 Difference]: Finished difference. Result has 425 places, 979 transitions, 33485 flow [2023-08-24 07:42:29,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=32784, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=974, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33485, PETRI_PLACES=425, PETRI_TRANSITIONS=979} [2023-08-24 07:42:29,906 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 395 predicate places. [2023-08-24 07:42:29,906 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 979 transitions, 33485 flow [2023-08-24 07:42:29,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:29,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:42:29,906 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:42:29,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-08-24 07:42:29,907 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:42:29,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:42:29,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1416518288, now seen corresponding path program 36 times [2023-08-24 07:42:29,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:42:29,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182725607] [2023-08-24 07:42:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:42:29,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:42:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:42:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:42:30,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:42:30,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182725607] [2023-08-24 07:42:30,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182725607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:42:30,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:42:30,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:42:30,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627339853] [2023-08-24 07:42:30,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:42:30,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:42:30,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:42:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:42:30,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:42:30,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:42:30,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 979 transitions, 33485 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:30,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:42:30,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:42:30,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:42:36,809 INFO L124 PetriNetUnfolderBase]: 9319/16530 cut-off events. [2023-08-24 07:42:36,809 INFO L125 PetriNetUnfolderBase]: For 663325/663325 co-relation queries the response was YES. [2023-08-24 07:42:36,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146847 conditions, 16530 events. 9319/16530 cut-off events. For 663325/663325 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 135281 event pairs, 3332 based on Foata normal form. 6/16536 useless extension candidates. Maximal degree in co-relation 146689. Up to 11617 conditions per place. [2023-08-24 07:42:36,980 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 795 selfloop transitions, 248 changer transitions 8/1051 dead transitions. [2023-08-24 07:42:36,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1051 transitions, 36275 flow [2023-08-24 07:42:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:42:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:42:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-08-24 07:42:36,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37061646363971945 [2023-08-24 07:42:36,981 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-08-24 07:42:36,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-08-24 07:42:36,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:42:36,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-08-24 07:42:36,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:36,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:36,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:36,985 INFO L175 Difference]: Start difference. First operand has 425 places, 979 transitions, 33485 flow. Second operand 7 states and 2008 transitions. [2023-08-24 07:42:36,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 1051 transitions, 36275 flow [2023-08-24 07:42:42,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 1051 transitions, 35902 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-24 07:42:42,679 INFO L231 Difference]: Finished difference. Result has 428 places, 977 transitions, 33519 flow [2023-08-24 07:42:42,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=33075, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=978, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=730, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33519, PETRI_PLACES=428, PETRI_TRANSITIONS=977} [2023-08-24 07:42:42,692 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2023-08-24 07:42:42,693 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 977 transitions, 33519 flow [2023-08-24 07:42:42,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:42,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:42:42,693 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:42:42,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-08-24 07:42:42,693 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:42:42,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:42:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2059706022, now seen corresponding path program 37 times [2023-08-24 07:42:42,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:42:42,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146072601] [2023-08-24 07:42:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:42:42,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:42:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:42:42,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:42:42,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:42:42,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146072601] [2023-08-24 07:42:42,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146072601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:42:42,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:42:42,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:42:42,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515441841] [2023-08-24 07:42:42,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:42:42,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:42:42,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:42:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:42:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:42:42,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:42:42,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 977 transitions, 33519 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:42,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:42:42,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:42:42,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:42:49,307 INFO L124 PetriNetUnfolderBase]: 9298/16475 cut-off events. [2023-08-24 07:42:49,307 INFO L125 PetriNetUnfolderBase]: For 666650/666650 co-relation queries the response was YES. [2023-08-24 07:42:49,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146690 conditions, 16475 events. 9298/16475 cut-off events. For 666650/666650 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 134325 event pairs, 3402 based on Foata normal form. 8/16483 useless extension candidates. Maximal degree in co-relation 146533. Up to 11617 conditions per place. [2023-08-24 07:42:49,481 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 807 selfloop transitions, 237 changer transitions 0/1044 dead transitions. [2023-08-24 07:42:49,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 1044 transitions, 36285 flow [2023-08-24 07:42:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:42:49,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:42:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-08-24 07:42:49,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3698781838316722 [2023-08-24 07:42:49,484 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-08-24 07:42:49,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-08-24 07:42:49,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:42:49,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-08-24 07:42:49,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:49,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:49,488 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:49,488 INFO L175 Difference]: Start difference. First operand has 428 places, 977 transitions, 33519 flow. Second operand 7 states and 2004 transitions. [2023-08-24 07:42:49,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 1044 transitions, 36285 flow [2023-08-24 07:42:55,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 1044 transitions, 35791 flow, removed 68 selfloop flow, removed 3 redundant places. [2023-08-24 07:42:55,314 INFO L231 Difference]: Finished difference. Result has 430 places, 976 transitions, 33471 flow [2023-08-24 07:42:55,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=32958, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=738, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33471, PETRI_PLACES=430, PETRI_TRANSITIONS=976} [2023-08-24 07:42:55,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 400 predicate places. [2023-08-24 07:42:55,333 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 976 transitions, 33471 flow [2023-08-24 07:42:55,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:55,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:42:55,333 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:42:55,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-08-24 07:42:55,333 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:42:55,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:42:55,333 INFO L85 PathProgramCache]: Analyzing trace with hash 606047037, now seen corresponding path program 41 times [2023-08-24 07:42:55,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:42:55,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255975189] [2023-08-24 07:42:55,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:42:55,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:42:55,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:42:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:42:55,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:42:55,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255975189] [2023-08-24 07:42:55,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255975189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:42:55,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:42:55,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:42:55,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806436355] [2023-08-24 07:42:55,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:42:55,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:42:55,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:42:55,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:42:55,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:42:55,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:42:55,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 976 transitions, 33471 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:42:55,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:42:55,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:42:55,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:43:01,911 INFO L124 PetriNetUnfolderBase]: 9347/16544 cut-off events. [2023-08-24 07:43:01,911 INFO L125 PetriNetUnfolderBase]: For 663454/663454 co-relation queries the response was YES. [2023-08-24 07:43:02,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147578 conditions, 16544 events. 9347/16544 cut-off events. For 663454/663454 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 134878 event pairs, 2186 based on Foata normal form. 10/16554 useless extension candidates. Maximal degree in co-relation 147421. Up to 7614 conditions per place. [2023-08-24 07:43:02,189 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 733 selfloop transitions, 351 changer transitions 2/1086 dead transitions. [2023-08-24 07:43:02,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 1086 transitions, 37734 flow [2023-08-24 07:43:02,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:43:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:43:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-08-24 07:43:02,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3698781838316722 [2023-08-24 07:43:02,191 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-08-24 07:43:02,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-08-24 07:43:02,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:43:02,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-08-24 07:43:02,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:02,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:02,195 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:02,195 INFO L175 Difference]: Start difference. First operand has 430 places, 976 transitions, 33471 flow. Second operand 7 states and 2004 transitions. [2023-08-24 07:43:02,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 1086 transitions, 37734 flow [2023-08-24 07:43:08,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 1086 transitions, 37250 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-24 07:43:08,176 INFO L231 Difference]: Finished difference. Result has 433 places, 994 transitions, 34545 flow [2023-08-24 07:43:08,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=32948, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34545, PETRI_PLACES=433, PETRI_TRANSITIONS=994} [2023-08-24 07:43:08,177 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 403 predicate places. [2023-08-24 07:43:08,177 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 994 transitions, 34545 flow [2023-08-24 07:43:08,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:08,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:43:08,177 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:43:08,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-08-24 07:43:08,178 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:43:08,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:43:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash -716151588, now seen corresponding path program 38 times [2023-08-24 07:43:08,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:43:08,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908219349] [2023-08-24 07:43:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:43:08,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:43:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:43:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:43:08,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:43:08,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908219349] [2023-08-24 07:43:08,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908219349] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:43:08,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:43:08,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:43:08,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076918419] [2023-08-24 07:43:08,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:43:08,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:43:08,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:43:08,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:43:08,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:43:08,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:43:08,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 994 transitions, 34545 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:08,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:43:08,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:43:08,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:43:14,519 INFO L124 PetriNetUnfolderBase]: 9296/16447 cut-off events. [2023-08-24 07:43:14,519 INFO L125 PetriNetUnfolderBase]: For 687599/687599 co-relation queries the response was YES. [2023-08-24 07:43:14,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148098 conditions, 16447 events. 9296/16447 cut-off events. For 687599/687599 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 133873 event pairs, 3404 based on Foata normal form. 18/16465 useless extension candidates. Maximal degree in co-relation 147939. Up to 11679 conditions per place. [2023-08-24 07:43:14,693 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 821 selfloop transitions, 248 changer transitions 1/1070 dead transitions. [2023-08-24 07:43:14,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1070 transitions, 37505 flow [2023-08-24 07:43:14,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:43:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:43:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-08-24 07:43:14,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709856035437431 [2023-08-24 07:43:14,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-08-24 07:43:14,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-08-24 07:43:14,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:43:14,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-08-24 07:43:14,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:14,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:14,698 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:14,698 INFO L175 Difference]: Start difference. First operand has 433 places, 994 transitions, 34545 flow. Second operand 7 states and 2010 transitions. [2023-08-24 07:43:14,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1070 transitions, 37505 flow [2023-08-24 07:43:20,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 1070 transitions, 36909 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-24 07:43:20,510 INFO L231 Difference]: Finished difference. Result has 436 places, 998 transitions, 34553 flow [2023-08-24 07:43:20,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=33912, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34553, PETRI_PLACES=436, PETRI_TRANSITIONS=998} [2023-08-24 07:43:20,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 406 predicate places. [2023-08-24 07:43:20,510 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 998 transitions, 34553 flow [2023-08-24 07:43:20,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:20,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:43:20,511 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:43:20,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-08-24 07:43:20,511 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:43:20,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:43:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1179484571, now seen corresponding path program 42 times [2023-08-24 07:43:20,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:43:20,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16884904] [2023-08-24 07:43:20,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:43:20,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:43:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:43:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:43:20,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:43:20,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16884904] [2023-08-24 07:43:20,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16884904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:43:20,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:43:20,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:43:20,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180856821] [2023-08-24 07:43:20,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:43:20,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:43:20,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:43:20,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:43:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:43:20,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:43:20,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 998 transitions, 34553 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:20,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:43:20,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:43:20,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:43:27,096 INFO L124 PetriNetUnfolderBase]: 9283/16416 cut-off events. [2023-08-24 07:43:27,096 INFO L125 PetriNetUnfolderBase]: For 671353/671353 co-relation queries the response was YES. [2023-08-24 07:43:27,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148594 conditions, 16416 events. 9283/16416 cut-off events. For 671353/671353 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 133514 event pairs, 2169 based on Foata normal form. 4/16420 useless extension candidates. Maximal degree in co-relation 148435. Up to 7614 conditions per place. [2023-08-24 07:43:27,270 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 732 selfloop transitions, 345 changer transitions 5/1082 dead transitions. [2023-08-24 07:43:27,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 1082 transitions, 37914 flow [2023-08-24 07:43:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:43:27,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:43:27,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-08-24 07:43:27,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36858619416758953 [2023-08-24 07:43:27,272 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-08-24 07:43:27,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-08-24 07:43:27,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:43:27,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-08-24 07:43:27,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:27,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:27,276 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:27,276 INFO L175 Difference]: Start difference. First operand has 436 places, 998 transitions, 34553 flow. Second operand 7 states and 1997 transitions. [2023-08-24 07:43:27,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 1082 transitions, 37914 flow [2023-08-24 07:43:33,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 1082 transitions, 37444 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-24 07:43:33,336 INFO L231 Difference]: Finished difference. Result has 438 places, 995 transitions, 34691 flow [2023-08-24 07:43:33,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=34029, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=996, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34691, PETRI_PLACES=438, PETRI_TRANSITIONS=995} [2023-08-24 07:43:33,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2023-08-24 07:43:33,337 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 995 transitions, 34691 flow [2023-08-24 07:43:33,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:33,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:43:33,337 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:43:33,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-08-24 07:43:33,337 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:43:33,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:43:33,338 INFO L85 PathProgramCache]: Analyzing trace with hash -292456666, now seen corresponding path program 39 times [2023-08-24 07:43:33,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:43:33,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995336490] [2023-08-24 07:43:33,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:43:33,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:43:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:43:33,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:43:33,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:43:33,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995336490] [2023-08-24 07:43:33,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995336490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:43:33,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:43:33,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:43:33,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603022670] [2023-08-24 07:43:33,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:43:33,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:43:33,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:43:33,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:43:33,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:43:33,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:43:33,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 995 transitions, 34691 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:33,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:43:33,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:43:33,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:43:39,912 INFO L124 PetriNetUnfolderBase]: 9256/16357 cut-off events. [2023-08-24 07:43:39,912 INFO L125 PetriNetUnfolderBase]: For 687610/687610 co-relation queries the response was YES. [2023-08-24 07:43:40,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147548 conditions, 16357 events. 9256/16357 cut-off events. For 687610/687610 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 132836 event pairs, 3424 based on Foata normal form. 16/16373 useless extension candidates. Maximal degree in co-relation 147389. Up to 11657 conditions per place. [2023-08-24 07:43:40,092 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 814 selfloop transitions, 247 changer transitions 0/1061 dead transitions. [2023-08-24 07:43:40,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 1061 transitions, 37426 flow [2023-08-24 07:43:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:43:40,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:43:40,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-08-24 07:43:40,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37061646363971945 [2023-08-24 07:43:40,094 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-08-24 07:43:40,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-08-24 07:43:40,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:43:40,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-08-24 07:43:40,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:40,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:40,097 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:40,097 INFO L175 Difference]: Start difference. First operand has 438 places, 995 transitions, 34691 flow. Second operand 7 states and 2008 transitions. [2023-08-24 07:43:40,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 1061 transitions, 37426 flow [2023-08-24 07:43:45,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 1061 transitions, 36671 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-24 07:43:45,823 INFO L231 Difference]: Finished difference. Result has 434 places, 993 transitions, 34365 flow [2023-08-24 07:43:45,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=33871, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34365, PETRI_PLACES=434, PETRI_TRANSITIONS=993} [2023-08-24 07:43:45,824 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2023-08-24 07:43:45,824 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 993 transitions, 34365 flow [2023-08-24 07:43:45,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:45,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:43:45,825 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:43:45,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-08-24 07:43:45,825 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:43:45,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:43:45,825 INFO L85 PathProgramCache]: Analyzing trace with hash -669582927, now seen corresponding path program 43 times [2023-08-24 07:43:45,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:43:45,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308519979] [2023-08-24 07:43:45,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:43:45,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:43:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:43:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:43:46,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:43:46,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308519979] [2023-08-24 07:43:46,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308519979] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:43:46,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317594696] [2023-08-24 07:43:46,059 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 07:43:46,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:43:46,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:43:46,061 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:43:46,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 07:43:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:43:46,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 07:43:46,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:43:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:43:46,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:43:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:43:46,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317594696] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 07:43:46,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 07:43:46,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 19 [2023-08-24 07:43:46,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602127336] [2023-08-24 07:43:46,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:43:46,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 07:43:46,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:43:46,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 07:43:46,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2023-08-24 07:43:46,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 774 [2023-08-24 07:43:46,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 993 transitions, 34365 flow. Second operand has 8 states, 8 states have (on average 272.75) internal successors, (2182), 8 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:46,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:43:46,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 774 [2023-08-24 07:43:46,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:43:53,518 INFO L124 PetriNetUnfolderBase]: 9393/16600 cut-off events. [2023-08-24 07:43:53,518 INFO L125 PetriNetUnfolderBase]: For 682625/682625 co-relation queries the response was YES. [2023-08-24 07:43:53,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149839 conditions, 16600 events. 9393/16600 cut-off events. For 682625/682625 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 135316 event pairs, 2089 based on Foata normal form. 6/16606 useless extension candidates. Maximal degree in co-relation 149681. Up to 7650 conditions per place. [2023-08-24 07:43:53,702 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 767 selfloop transitions, 368 changer transitions 16/1151 dead transitions. [2023-08-24 07:43:53,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 1151 transitions, 39979 flow [2023-08-24 07:43:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 07:43:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 07:43:53,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2255 transitions. [2023-08-24 07:43:53,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641795865633075 [2023-08-24 07:43:53,704 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2255 transitions. [2023-08-24 07:43:53,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2255 transitions. [2023-08-24 07:43:53,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:43:53,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2255 transitions. [2023-08-24 07:43:53,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.875) internal successors, (2255), 8 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:53,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 774.0) internal successors, (6966), 9 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:53,708 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 774.0) internal successors, (6966), 9 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:53,708 INFO L175 Difference]: Start difference. First operand has 434 places, 993 transitions, 34365 flow. Second operand 8 states and 2255 transitions. [2023-08-24 07:43:53,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 1151 transitions, 39979 flow [2023-08-24 07:43:59,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1151 transitions, 39675 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 07:43:59,530 INFO L231 Difference]: Finished difference. Result has 441 places, 1042 transitions, 36814 flow [2023-08-24 07:43:59,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=34069, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=993, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=36814, PETRI_PLACES=441, PETRI_TRANSITIONS=1042} [2023-08-24 07:43:59,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2023-08-24 07:43:59,531 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 1042 transitions, 36814 flow [2023-08-24 07:43:59,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 272.75) internal successors, (2182), 8 states have internal predecessors, (2182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:59,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:43:59,532 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:43:59,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-24 07:43:59,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:43:59,739 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:43:59,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:43:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash 832508612, now seen corresponding path program 40 times [2023-08-24 07:43:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:43:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944190276] [2023-08-24 07:43:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:43:59,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:43:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:43:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:43:59,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:43:59,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944190276] [2023-08-24 07:43:59,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944190276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:43:59,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:43:59,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:43:59,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762029553] [2023-08-24 07:43:59,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:43:59,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:43:59,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:43:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:43:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:43:59,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:43:59,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 1042 transitions, 36814 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:43:59,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:43:59,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:43:59,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:06,489 INFO L124 PetriNetUnfolderBase]: 9333/16502 cut-off events. [2023-08-24 07:44:06,490 INFO L125 PetriNetUnfolderBase]: For 715312/715312 co-relation queries the response was YES. [2023-08-24 07:44:06,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151367 conditions, 16502 events. 9333/16502 cut-off events. For 715312/715312 co-relation queries the response was YES. Maximal size of possible extension queue 1034. Compared 134481 event pairs, 3269 based on Foata normal form. 6/16508 useless extension candidates. Maximal degree in co-relation 151205. Up to 11814 conditions per place. [2023-08-24 07:44:06,663 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 857 selfloop transitions, 258 changer transitions 4/1119 dead transitions. [2023-08-24 07:44:06,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 1119 transitions, 39800 flow [2023-08-24 07:44:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:44:06,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:44:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2023-08-24 07:44:06,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3623108157991879 [2023-08-24 07:44:06,665 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2023-08-24 07:44:06,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2023-08-24 07:44:06,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:06,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2023-08-24 07:44:06,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:06,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:06,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:06,669 INFO L175 Difference]: Start difference. First operand has 441 places, 1042 transitions, 36814 flow. Second operand 7 states and 1963 transitions. [2023-08-24 07:44:06,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 1119 transitions, 39800 flow [2023-08-24 07:44:12,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1119 transitions, 38846 flow, removed 64 selfloop flow, removed 8 redundant places. [2023-08-24 07:44:12,623 INFO L231 Difference]: Finished difference. Result has 438 places, 1041 transitions, 36291 flow [2023-08-24 07:44:12,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=35821, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1041, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=783, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=36291, PETRI_PLACES=438, PETRI_TRANSITIONS=1041} [2023-08-24 07:44:12,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 408 predicate places. [2023-08-24 07:44:12,624 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 1041 transitions, 36291 flow [2023-08-24 07:44:12,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:12,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:12,625 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:12,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2023-08-24 07:44:12,625 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:12,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:12,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1513946216, now seen corresponding path program 41 times [2023-08-24 07:44:12,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:12,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678286820] [2023-08-24 07:44:12,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:12,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:44:12,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:12,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678286820] [2023-08-24 07:44:12,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678286820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:12,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:12,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:44:12,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277915316] [2023-08-24 07:44:12,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:12,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:44:12,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:12,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:44:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:44:12,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:44:12,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 1041 transitions, 36291 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:12,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:12,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:44:12,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:19,469 INFO L124 PetriNetUnfolderBase]: 9277/16390 cut-off events. [2023-08-24 07:44:19,469 INFO L125 PetriNetUnfolderBase]: For 695474/695474 co-relation queries the response was YES. [2023-08-24 07:44:19,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150060 conditions, 16390 events. 9277/16390 cut-off events. For 695474/695474 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 133103 event pairs, 3301 based on Foata normal form. 18/16408 useless extension candidates. Maximal degree in co-relation 149902. Up to 11814 conditions per place. [2023-08-24 07:44:19,641 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 853 selfloop transitions, 254 changer transitions 1/1108 dead transitions. [2023-08-24 07:44:19,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 1108 transitions, 39112 flow [2023-08-24 07:44:19,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:44:19,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:44:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-08-24 07:44:19,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37006275378368403 [2023-08-24 07:44:19,643 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-08-24 07:44:19,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-08-24 07:44:19,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:19,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-08-24 07:44:19,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:19,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:19,647 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:19,647 INFO L175 Difference]: Start difference. First operand has 438 places, 1041 transitions, 36291 flow. Second operand 7 states and 2005 transitions. [2023-08-24 07:44:19,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 1108 transitions, 39112 flow [2023-08-24 07:44:25,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1108 transitions, 38887 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-24 07:44:25,176 INFO L231 Difference]: Finished difference. Result has 443 places, 1039 transitions, 36510 flow [2023-08-24 07:44:25,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=36029, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1040, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=786, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=36510, PETRI_PLACES=443, PETRI_TRANSITIONS=1039} [2023-08-24 07:44:25,177 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2023-08-24 07:44:25,177 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 1039 transitions, 36510 flow [2023-08-24 07:44:25,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:25,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:25,177 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:25,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-08-24 07:44:25,177 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:25,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:25,177 INFO L85 PathProgramCache]: Analyzing trace with hash 314366196, now seen corresponding path program 42 times [2023-08-24 07:44:25,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:25,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343171198] [2023-08-24 07:44:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:25,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:44:25,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:25,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343171198] [2023-08-24 07:44:25,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343171198] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:25,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:25,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:44:25,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869657596] [2023-08-24 07:44:25,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:25,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:44:25,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:25,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:44:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:44:25,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:44:25,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 1039 transitions, 36510 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:25,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:25,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:44:25,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:31,747 INFO L124 PetriNetUnfolderBase]: 9275/16388 cut-off events. [2023-08-24 07:44:31,747 INFO L125 PetriNetUnfolderBase]: For 706147/706147 co-relation queries the response was YES. [2023-08-24 07:44:31,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150554 conditions, 16388 events. 9275/16388 cut-off events. For 706147/706147 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 133284 event pairs, 3277 based on Foata normal form. 8/16396 useless extension candidates. Maximal degree in co-relation 150396. Up to 11814 conditions per place. [2023-08-24 07:44:31,916 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 850 selfloop transitions, 262 changer transitions 0/1112 dead transitions. [2023-08-24 07:44:31,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 1112 transitions, 39624 flow [2023-08-24 07:44:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:44:31,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:44:31,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2023-08-24 07:44:31,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3624953857511997 [2023-08-24 07:44:31,917 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2023-08-24 07:44:31,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2023-08-24 07:44:31,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:31,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2023-08-24 07:44:31,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:31,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:31,921 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:31,921 INFO L175 Difference]: Start difference. First operand has 443 places, 1039 transitions, 36510 flow. Second operand 7 states and 1964 transitions. [2023-08-24 07:44:31,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 1112 transitions, 39624 flow [2023-08-24 07:44:37,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1112 transitions, 39105 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-24 07:44:37,458 INFO L231 Difference]: Finished difference. Result has 444 places, 1044 transitions, 36781 flow [2023-08-24 07:44:37,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=35916, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=36781, PETRI_PLACES=444, PETRI_TRANSITIONS=1044} [2023-08-24 07:44:37,459 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 414 predicate places. [2023-08-24 07:44:37,459 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 1044 transitions, 36781 flow [2023-08-24 07:44:37,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:37,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:37,459 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:37,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2023-08-24 07:44:37,459 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:37,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:37,460 INFO L85 PathProgramCache]: Analyzing trace with hash 638210587, now seen corresponding path program 44 times [2023-08-24 07:44:37,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:37,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577092583] [2023-08-24 07:44:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:37,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:44:37,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:37,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577092583] [2023-08-24 07:44:37,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577092583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:37,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:37,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:44:37,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538137853] [2023-08-24 07:44:37,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:37,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:44:37,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:37,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:44:37,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:44:37,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:44:37,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1044 transitions, 36781 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:37,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:37,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:44:37,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:44,134 INFO L124 PetriNetUnfolderBase]: 9255/16344 cut-off events. [2023-08-24 07:44:44,134 INFO L125 PetriNetUnfolderBase]: For 686648/686648 co-relation queries the response was YES. [2023-08-24 07:44:44,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149645 conditions, 16344 events. 9255/16344 cut-off events. For 686648/686648 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 132761 event pairs, 2058 based on Foata normal form. 8/16352 useless extension candidates. Maximal degree in co-relation 149488. Up to 7668 conditions per place. [2023-08-24 07:44:44,309 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 758 selfloop transitions, 368 changer transitions 1/1127 dead transitions. [2023-08-24 07:44:44,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 1127 transitions, 40009 flow [2023-08-24 07:44:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:44:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:44:44,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2007 transitions. [2023-08-24 07:44:44,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704318936877076 [2023-08-24 07:44:44,311 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2007 transitions. [2023-08-24 07:44:44,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2007 transitions. [2023-08-24 07:44:44,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:44,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2007 transitions. [2023-08-24 07:44:44,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.7142857142857) internal successors, (2007), 7 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:44,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:44,315 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:44,315 INFO L175 Difference]: Start difference. First operand has 444 places, 1044 transitions, 36781 flow. Second operand 7 states and 2007 transitions. [2023-08-24 07:44:44,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 1127 transitions, 40009 flow [2023-08-24 07:44:50,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1127 transitions, 39528 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-24 07:44:50,174 INFO L231 Difference]: Finished difference. Result has 447 places, 1043 transitions, 37008 flow [2023-08-24 07:44:50,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=36300, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1044, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=368, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37008, PETRI_PLACES=447, PETRI_TRANSITIONS=1043} [2023-08-24 07:44:50,174 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2023-08-24 07:44:50,174 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 1043 transitions, 37008 flow [2023-08-24 07:44:50,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:50,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:50,175 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:50,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2023-08-24 07:44:50,175 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:50,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:50,175 INFO L85 PathProgramCache]: Analyzing trace with hash -324548076, now seen corresponding path program 43 times [2023-08-24 07:44:50,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:50,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055346598] [2023-08-24 07:44:50,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:50,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:44:50,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:50,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055346598] [2023-08-24 07:44:50,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055346598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:50,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:50,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:44:50,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600153714] [2023-08-24 07:44:50,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:50,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:44:50,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:50,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:44:50,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:44:50,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:44:50,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1043 transitions, 37008 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:50,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:50,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:44:50,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:57,126 INFO L124 PetriNetUnfolderBase]: 9368/16525 cut-off events. [2023-08-24 07:44:57,127 INFO L125 PetriNetUnfolderBase]: For 709570/709570 co-relation queries the response was YES. [2023-08-24 07:44:57,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151511 conditions, 16525 events. 9368/16525 cut-off events. For 709570/709570 co-relation queries the response was YES. Maximal size of possible extension queue 1034. Compared 134657 event pairs, 1581 based on Foata normal form. 8/16533 useless extension candidates. Maximal degree in co-relation 151354. Up to 6064 conditions per place. [2023-08-24 07:44:57,332 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 688 selfloop transitions, 501 changer transitions 0/1189 dead transitions. [2023-08-24 07:44:57,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1189 transitions, 41274 flow [2023-08-24 07:44:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 07:44:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 07:44:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3082 transitions. [2023-08-24 07:44:57,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36199201315480384 [2023-08-24 07:44:57,335 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3082 transitions. [2023-08-24 07:44:57,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3082 transitions. [2023-08-24 07:44:57,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:57,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3082 transitions. [2023-08-24 07:44:57,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 280.1818181818182) internal successors, (3082), 11 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:57,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 774.0) internal successors, (9288), 12 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:57,341 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 774.0) internal successors, (9288), 12 states have internal predecessors, (9288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:57,341 INFO L175 Difference]: Start difference. First operand has 447 places, 1043 transitions, 37008 flow. Second operand 11 states and 3082 transitions. [2023-08-24 07:44:57,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 1189 transitions, 41274 flow [2023-08-24 07:45:03,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1189 transitions, 40632 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-24 07:45:03,494 INFO L231 Difference]: Finished difference. Result has 457 places, 1094 transitions, 38708 flow [2023-08-24 07:45:03,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=36384, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1043, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=38708, PETRI_PLACES=457, PETRI_TRANSITIONS=1094} [2023-08-24 07:45:03,494 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 427 predicate places. [2023-08-24 07:45:03,494 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 1094 transitions, 38708 flow [2023-08-24 07:45:03,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:03,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:45:03,495 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:45:03,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-08-24 07:45:03,495 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:45:03,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:45:03,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2076313797, now seen corresponding path program 45 times [2023-08-24 07:45:03,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:45:03,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831889470] [2023-08-24 07:45:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:45:03,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:45:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:45:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:45:03,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:45:03,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831889470] [2023-08-24 07:45:03,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831889470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:45:03,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:45:03,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:45:03,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987498779] [2023-08-24 07:45:03,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:45:03,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:45:03,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:45:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:45:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:45:03,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:45:03,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 1094 transitions, 38708 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:03,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:45:03,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:45:03,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:45:10,629 INFO L124 PetriNetUnfolderBase]: 9359/16476 cut-off events. [2023-08-24 07:45:10,629 INFO L125 PetriNetUnfolderBase]: For 735553/735553 co-relation queries the response was YES. [2023-08-24 07:45:10,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155575 conditions, 16476 events. 9359/16476 cut-off events. For 735553/735553 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 133277 event pairs, 2038 based on Foata normal form. 26/16502 useless extension candidates. Maximal degree in co-relation 155414. Up to 7742 conditions per place. [2023-08-24 07:45:10,807 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 804 selfloop transitions, 389 changer transitions 0/1193 dead transitions. [2023-08-24 07:45:10,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 1193 transitions, 42687 flow [2023-08-24 07:45:10,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:45:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:45:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2011 transitions. [2023-08-24 07:45:10,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711701734957549 [2023-08-24 07:45:10,809 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2011 transitions. [2023-08-24 07:45:10,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2011 transitions. [2023-08-24 07:45:10,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:45:10,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2011 transitions. [2023-08-24 07:45:10,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.2857142857143) internal successors, (2011), 7 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:10,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:10,813 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:10,813 INFO L175 Difference]: Start difference. First operand has 457 places, 1094 transitions, 38708 flow. Second operand 7 states and 2011 transitions. [2023-08-24 07:45:10,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 1193 transitions, 42687 flow [2023-08-24 07:45:17,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1193 transitions, 41770 flow, removed 75 selfloop flow, removed 10 redundant places. [2023-08-24 07:45:17,791 INFO L231 Difference]: Finished difference. Result has 455 places, 1106 transitions, 39220 flow [2023-08-24 07:45:17,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=37830, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1094, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=377, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=39220, PETRI_PLACES=455, PETRI_TRANSITIONS=1106} [2023-08-24 07:45:17,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 425 predicate places. [2023-08-24 07:45:17,791 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 1106 transitions, 39220 flow [2023-08-24 07:45:17,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:17,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:45:17,792 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:45:17,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2023-08-24 07:45:17,792 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:45:17,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:45:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1459640574, now seen corresponding path program 44 times [2023-08-24 07:45:17,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:45:17,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031502972] [2023-08-24 07:45:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:45:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:45:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:45:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:45:17,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:45:17,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031502972] [2023-08-24 07:45:17,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031502972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:45:17,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:45:17,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:45:17,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758605076] [2023-08-24 07:45:17,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:45:17,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:45:18,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:45:18,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:45:18,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:45:18,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:45:18,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 1106 transitions, 39220 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:18,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:45:18,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:45:18,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:45:24,750 INFO L124 PetriNetUnfolderBase]: 9337/16526 cut-off events. [2023-08-24 07:45:24,750 INFO L125 PetriNetUnfolderBase]: For 733221/733221 co-relation queries the response was YES. [2023-08-24 07:45:24,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155417 conditions, 16526 events. 9337/16526 cut-off events. For 733221/733221 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 134794 event pairs, 3306 based on Foata normal form. 18/16544 useless extension candidates. Maximal degree in co-relation 155260. Up to 11721 conditions per place. [2023-08-24 07:45:24,924 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 903 selfloop transitions, 259 changer transitions 0/1162 dead transitions. [2023-08-24 07:45:24,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1162 transitions, 42189 flow [2023-08-24 07:45:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:45:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:45:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-08-24 07:45:24,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696936138796604 [2023-08-24 07:45:24,926 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-08-24 07:45:24,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-08-24 07:45:24,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:45:24,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-08-24 07:45:24,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:24,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:24,930 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:24,930 INFO L175 Difference]: Start difference. First operand has 455 places, 1106 transitions, 39220 flow. Second operand 7 states and 2003 transitions. [2023-08-24 07:45:24,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1162 transitions, 42189 flow [2023-08-24 07:45:31,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1162 transitions, 41914 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 07:45:31,871 INFO L231 Difference]: Finished difference. Result has 462 places, 1111 transitions, 39726 flow [2023-08-24 07:45:31,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=38948, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=39726, PETRI_PLACES=462, PETRI_TRANSITIONS=1111} [2023-08-24 07:45:31,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2023-08-24 07:45:31,872 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1111 transitions, 39726 flow [2023-08-24 07:45:31,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:31,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:45:31,872 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:45:31,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-08-24 07:45:31,872 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:45:31,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:45:31,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1687386884, now seen corresponding path program 45 times [2023-08-24 07:45:31,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:45:31,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332313991] [2023-08-24 07:45:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:45:31,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:45:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:45:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:45:32,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:45:32,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332313991] [2023-08-24 07:45:32,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332313991] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:45:32,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:45:32,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:45:32,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427304354] [2023-08-24 07:45:32,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:45:32,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:45:32,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:45:32,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:45:32,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:45:32,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:45:32,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1111 transitions, 39726 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:32,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:45:32,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:45:32,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:45:39,002 INFO L124 PetriNetUnfolderBase]: 9327/16460 cut-off events. [2023-08-24 07:45:39,003 INFO L125 PetriNetUnfolderBase]: For 741938/741938 co-relation queries the response was YES. [2023-08-24 07:45:39,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155688 conditions, 16460 events. 9327/16460 cut-off events. For 741938/741938 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 133683 event pairs, 3296 based on Foata normal form. 12/16472 useless extension candidates. Maximal degree in co-relation 155528. Up to 11721 conditions per place. [2023-08-24 07:45:39,190 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 901 selfloop transitions, 260 changer transitions 1/1162 dead transitions. [2023-08-24 07:45:39,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1162 transitions, 42520 flow [2023-08-24 07:45:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:45:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:45:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-08-24 07:45:39,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696936138796604 [2023-08-24 07:45:39,192 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-08-24 07:45:39,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-08-24 07:45:39,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:45:39,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-08-24 07:45:39,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:39,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:39,196 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:39,196 INFO L175 Difference]: Start difference. First operand has 462 places, 1111 transitions, 39726 flow. Second operand 7 states and 2003 transitions. [2023-08-24 07:45:39,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1162 transitions, 42520 flow [2023-08-24 07:45:46,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 1162 transitions, 41988 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-24 07:45:46,269 INFO L231 Difference]: Finished difference. Result has 466 places, 1110 transitions, 39724 flow [2023-08-24 07:45:46,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=39130, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=849, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=39724, PETRI_PLACES=466, PETRI_TRANSITIONS=1110} [2023-08-24 07:45:46,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 436 predicate places. [2023-08-24 07:45:46,270 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 1110 transitions, 39724 flow [2023-08-24 07:45:46,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:46,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:45:46,270 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:45:46,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2023-08-24 07:45:46,271 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:45:46,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:45:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash -962227267, now seen corresponding path program 46 times [2023-08-24 07:45:46,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:45:46,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553154150] [2023-08-24 07:45:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:45:46,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:45:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:45:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:45:46,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:45:46,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553154150] [2023-08-24 07:45:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553154150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:45:46,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:45:46,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:45:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812638981] [2023-08-24 07:45:46,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:45:46,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:45:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:45:46,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:45:46,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:45:46,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:45:46,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 1110 transitions, 39724 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:46,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:45:46,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:45:46,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:45:53,171 INFO L124 PetriNetUnfolderBase]: 9306/16409 cut-off events. [2023-08-24 07:45:53,171 INFO L125 PetriNetUnfolderBase]: For 727572/727572 co-relation queries the response was YES. [2023-08-24 07:45:53,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155315 conditions, 16409 events. 9306/16409 cut-off events. For 727572/727572 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 133080 event pairs, 2042 based on Foata normal form. 8/16417 useless extension candidates. Maximal degree in co-relation 155154. Up to 7804 conditions per place. [2023-08-24 07:45:53,501 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 799 selfloop transitions, 390 changer transitions 1/1190 dead transitions. [2023-08-24 07:45:53,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1190 transitions, 43018 flow [2023-08-24 07:45:53,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:45:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:45:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2007 transitions. [2023-08-24 07:45:53,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704318936877076 [2023-08-24 07:45:53,503 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2007 transitions. [2023-08-24 07:45:53,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2007 transitions. [2023-08-24 07:45:53,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:45:53,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2007 transitions. [2023-08-24 07:45:53,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.7142857142857) internal successors, (2007), 7 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:53,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:53,506 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:53,506 INFO L175 Difference]: Start difference. First operand has 466 places, 1110 transitions, 39724 flow. Second operand 7 states and 2007 transitions. [2023-08-24 07:45:53,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1190 transitions, 43018 flow [2023-08-24 07:46:00,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 1190 transitions, 42510 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-24 07:46:00,778 INFO L231 Difference]: Finished difference. Result has 466 places, 1108 transitions, 39938 flow [2023-08-24 07:46:00,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=39179, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=390, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=719, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=39938, PETRI_PLACES=466, PETRI_TRANSITIONS=1108} [2023-08-24 07:46:00,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 436 predicate places. [2023-08-24 07:46:00,779 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 1108 transitions, 39938 flow [2023-08-24 07:46:00,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:00,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:46:00,780 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:46:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2023-08-24 07:46:00,780 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:46:00,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:46:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash 855919214, now seen corresponding path program 46 times [2023-08-24 07:46:00,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:46:00,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231478148] [2023-08-24 07:46:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:46:00,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:46:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:46:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:46:01,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:46:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231478148] [2023-08-24 07:46:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231478148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:46:01,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:46:01,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:46:01,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625384197] [2023-08-24 07:46:01,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:46:01,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:46:01,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:46:01,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:46:01,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:46:01,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:46:01,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 1108 transitions, 39938 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:01,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:46:01,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:46:01,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:46:08,014 INFO L124 PetriNetUnfolderBase]: 9315/16466 cut-off events. [2023-08-24 07:46:08,014 INFO L125 PetriNetUnfolderBase]: For 751873/751873 co-relation queries the response was YES. [2023-08-24 07:46:08,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156438 conditions, 16466 events. 9315/16466 cut-off events. For 751873/751873 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 134084 event pairs, 3208 based on Foata normal form. 24/16490 useless extension candidates. Maximal degree in co-relation 156278. Up to 11713 conditions per place. [2023-08-24 07:46:08,203 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 907 selfloop transitions, 309 changer transitions 0/1216 dead transitions. [2023-08-24 07:46:08,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 1216 transitions, 44179 flow [2023-08-24 07:46:08,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:46:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:46:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1977 transitions. [2023-08-24 07:46:08,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3648947951273533 [2023-08-24 07:46:08,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1977 transitions. [2023-08-24 07:46:08,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1977 transitions. [2023-08-24 07:46:08,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:46:08,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1977 transitions. [2023-08-24 07:46:08,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 282.42857142857144) internal successors, (1977), 7 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:08,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:08,209 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:08,209 INFO L175 Difference]: Start difference. First operand has 466 places, 1108 transitions, 39938 flow. Second operand 7 states and 1977 transitions. [2023-08-24 07:46:08,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 1216 transitions, 44179 flow [2023-08-24 07:46:15,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 1216 transitions, 43607 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-24 07:46:15,398 INFO L231 Difference]: Finished difference. Result has 470 places, 1133 transitions, 40699 flow [2023-08-24 07:46:15,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=39353, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=824, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40699, PETRI_PLACES=470, PETRI_TRANSITIONS=1133} [2023-08-24 07:46:15,399 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 440 predicate places. [2023-08-24 07:46:15,399 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 1133 transitions, 40699 flow [2023-08-24 07:46:15,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:15,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:46:15,400 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:46:15,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2023-08-24 07:46:15,400 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:46:15,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:46:15,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1602625081, now seen corresponding path program 47 times [2023-08-24 07:46:15,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:46:15,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872257814] [2023-08-24 07:46:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:46:15,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:46:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:46:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:46:15,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:46:15,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872257814] [2023-08-24 07:46:15,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872257814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:46:15,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:46:15,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:46:15,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510454721] [2023-08-24 07:46:15,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:46:15,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:46:15,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:46:15,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:46:15,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:46:15,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:46:15,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 1133 transitions, 40699 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:15,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:46:15,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:46:15,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:46:22,442 INFO L124 PetriNetUnfolderBase]: 9310/16441 cut-off events. [2023-08-24 07:46:22,442 INFO L125 PetriNetUnfolderBase]: For 741941/741941 co-relation queries the response was YES. [2023-08-24 07:46:22,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156453 conditions, 16441 events. 9310/16441 cut-off events. For 741941/741941 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 133611 event pairs, 2010 based on Foata normal form. 4/16445 useless extension candidates. Maximal degree in co-relation 156292. Up to 7824 conditions per place. [2023-08-24 07:46:22,627 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 813 selfloop transitions, 393 changer transitions 0/1206 dead transitions. [2023-08-24 07:46:22,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 1206 transitions, 43947 flow [2023-08-24 07:46:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:46:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:46:22,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-08-24 07:46:22,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3695090439276486 [2023-08-24 07:46:22,629 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-08-24 07:46:22,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-08-24 07:46:22,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:46:22,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-08-24 07:46:22,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:22,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:22,633 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:22,633 INFO L175 Difference]: Start difference. First operand has 470 places, 1133 transitions, 40699 flow. Second operand 7 states and 2002 transitions. [2023-08-24 07:46:22,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 1206 transitions, 43947 flow [2023-08-24 07:46:30,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 1206 transitions, 43342 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-24 07:46:30,197 INFO L231 Difference]: Finished difference. Result has 468 places, 1131 transitions, 40828 flow [2023-08-24 07:46:30,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=39977, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=392, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40828, PETRI_PLACES=468, PETRI_TRANSITIONS=1131} [2023-08-24 07:46:30,197 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2023-08-24 07:46:30,198 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1131 transitions, 40828 flow [2023-08-24 07:46:30,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:30,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:46:30,198 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:46:30,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2023-08-24 07:46:30,198 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:46:30,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:46:30,198 INFO L85 PathProgramCache]: Analyzing trace with hash -803605676, now seen corresponding path program 47 times [2023-08-24 07:46:30,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:46:30,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854112197] [2023-08-24 07:46:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:46:30,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:46:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:46:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:46:30,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:46:30,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854112197] [2023-08-24 07:46:30,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854112197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:46:30,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:46:30,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:46:30,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127590004] [2023-08-24 07:46:30,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:46:30,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:46:30,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:46:30,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:46:30,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:46:30,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:46:30,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1131 transitions, 40828 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:30,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:46:30,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:46:30,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:46:37,174 INFO L124 PetriNetUnfolderBase]: 9258/16333 cut-off events. [2023-08-24 07:46:37,175 INFO L125 PetriNetUnfolderBase]: For 762341/762341 co-relation queries the response was YES. [2023-08-24 07:46:37,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155687 conditions, 16333 events. 9258/16333 cut-off events. For 762341/762341 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 132436 event pairs, 3271 based on Foata normal form. 12/16345 useless extension candidates. Maximal degree in co-relation 155528. Up to 11688 conditions per place. [2023-08-24 07:46:37,357 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 895 selfloop transitions, 305 changer transitions 0/1200 dead transitions. [2023-08-24 07:46:37,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1200 transitions, 44026 flow [2023-08-24 07:46:37,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:46:37,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:46:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2013 transitions. [2023-08-24 07:46:37,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715393133997785 [2023-08-24 07:46:37,359 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2013 transitions. [2023-08-24 07:46:37,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2013 transitions. [2023-08-24 07:46:37,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:46:37,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2013 transitions. [2023-08-24 07:46:37,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.57142857142856) internal successors, (2013), 7 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:37,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:37,363 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:37,363 INFO L175 Difference]: Start difference. First operand has 468 places, 1131 transitions, 40828 flow. Second operand 7 states and 2013 transitions. [2023-08-24 07:46:37,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1200 transitions, 44026 flow [2023-08-24 07:46:44,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 1200 transitions, 43242 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-24 07:46:44,364 INFO L231 Difference]: Finished difference. Result has 472 places, 1144 transitions, 41090 flow [2023-08-24 07:46:44,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=40044, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=826, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41090, PETRI_PLACES=472, PETRI_TRANSITIONS=1144} [2023-08-24 07:46:44,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2023-08-24 07:46:44,365 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 1144 transitions, 41090 flow [2023-08-24 07:46:44,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:44,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:46:44,365 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:46:44,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2023-08-24 07:46:44,365 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:46:44,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:46:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1532448839, now seen corresponding path program 48 times [2023-08-24 07:46:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:46:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272660017] [2023-08-24 07:46:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:46:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:46:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:46:44,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:46:44,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:46:44,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272660017] [2023-08-24 07:46:44,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272660017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:46:44,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:46:44,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:46:44,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217012070] [2023-08-24 07:46:44,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:46:44,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:46:44,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:46:44,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:46:44,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:46:44,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:46:44,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1144 transitions, 41090 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:44,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:46:44,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:46:44,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:46:51,797 INFO L124 PetriNetUnfolderBase]: 9247/16302 cut-off events. [2023-08-24 07:46:51,798 INFO L125 PetriNetUnfolderBase]: For 742955/742955 co-relation queries the response was YES. [2023-08-24 07:46:51,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155886 conditions, 16302 events. 9247/16302 cut-off events. For 742955/742955 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 131984 event pairs, 1958 based on Foata normal form. 10/16312 useless extension candidates. Maximal degree in co-relation 155724. Up to 7824 conditions per place. [2023-08-24 07:46:51,983 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 826 selfloop transitions, 400 changer transitions 0/1226 dead transitions. [2023-08-24 07:46:51,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 1226 transitions, 44764 flow [2023-08-24 07:46:51,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:46:51,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:46:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-08-24 07:46:51,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3698781838316722 [2023-08-24 07:46:51,985 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-08-24 07:46:51,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-08-24 07:46:51,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:46:51,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-08-24 07:46:51,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:51,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:51,988 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:51,988 INFO L175 Difference]: Start difference. First operand has 472 places, 1144 transitions, 41090 flow. Second operand 7 states and 2004 transitions. [2023-08-24 07:46:51,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 1226 transitions, 44764 flow [2023-08-24 07:46:59,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 1226 transitions, 44274 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-24 07:46:59,417 INFO L231 Difference]: Finished difference. Result has 472 places, 1150 transitions, 41736 flow [2023-08-24 07:46:59,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=40515, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=391, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41736, PETRI_PLACES=472, PETRI_TRANSITIONS=1150} [2023-08-24 07:46:59,418 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2023-08-24 07:46:59,418 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 1150 transitions, 41736 flow [2023-08-24 07:46:59,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:59,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:46:59,419 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:46:59,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2023-08-24 07:46:59,419 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:46:59,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:46:59,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1351964358, now seen corresponding path program 48 times [2023-08-24 07:46:59,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:46:59,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755099099] [2023-08-24 07:46:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:46:59,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:46:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:46:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:46:59,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:46:59,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755099099] [2023-08-24 07:46:59,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755099099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:46:59,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:46:59,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:46:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740326253] [2023-08-24 07:46:59,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:46:59,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:46:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:46:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:46:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:46:59,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:46:59,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1150 transitions, 41736 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:59,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:46:59,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:46:59,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:47:06,724 INFO L124 PetriNetUnfolderBase]: 9209/16222 cut-off events. [2023-08-24 07:47:06,725 INFO L125 PetriNetUnfolderBase]: For 766746/766746 co-relation queries the response was YES. [2023-08-24 07:47:06,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155559 conditions, 16222 events. 9209/16222 cut-off events. For 766746/766746 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 131216 event pairs, 3164 based on Foata normal form. 8/16230 useless extension candidates. Maximal degree in co-relation 155398. Up to 11657 conditions per place. [2023-08-24 07:47:06,907 INFO L140 encePairwiseOnDemand]: 765/774 looper letters, 903 selfloop transitions, 315 changer transitions 0/1218 dead transitions. [2023-08-24 07:47:06,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1218 transitions, 44940 flow [2023-08-24 07:47:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:47:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:47:06,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1977 transitions. [2023-08-24 07:47:06,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3648947951273533 [2023-08-24 07:47:06,909 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1977 transitions. [2023-08-24 07:47:06,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1977 transitions. [2023-08-24 07:47:06,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:47:06,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1977 transitions. [2023-08-24 07:47:06,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 282.42857142857144) internal successors, (1977), 7 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:06,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:06,912 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:06,912 INFO L175 Difference]: Start difference. First operand has 472 places, 1150 transitions, 41736 flow. Second operand 7 states and 1977 transitions. [2023-08-24 07:47:06,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1218 transitions, 44940 flow [2023-08-24 07:47:14,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 1218 transitions, 44093 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-08-24 07:47:14,346 INFO L231 Difference]: Finished difference. Result has 472 places, 1148 transitions, 41487 flow [2023-08-24 07:47:14,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=40776, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=833, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41487, PETRI_PLACES=472, PETRI_TRANSITIONS=1148} [2023-08-24 07:47:14,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2023-08-24 07:47:14,346 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 1148 transitions, 41487 flow [2023-08-24 07:47:14,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:14,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:47:14,347 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:47:14,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2023-08-24 07:47:14,347 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:47:14,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:47:14,347 INFO L85 PathProgramCache]: Analyzing trace with hash -872515632, now seen corresponding path program 49 times [2023-08-24 07:47:14,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:47:14,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001191880] [2023-08-24 07:47:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:47:14,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:47:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:47:14,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:47:14,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:47:14,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001191880] [2023-08-24 07:47:14,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001191880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:47:14,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:47:14,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:47:14,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817233802] [2023-08-24 07:47:14,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:47:14,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:47:14,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:47:14,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:47:14,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:47:14,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:47:14,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1148 transitions, 41487 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:14,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:47:14,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:47:14,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:47:21,372 INFO L124 PetriNetUnfolderBase]: 9183/16168 cut-off events. [2023-08-24 07:47:21,372 INFO L125 PetriNetUnfolderBase]: For 753161/753161 co-relation queries the response was YES. [2023-08-24 07:47:21,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154884 conditions, 16168 events. 9183/16168 cut-off events. For 753161/753161 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 130509 event pairs, 3262 based on Foata normal form. 6/16174 useless extension candidates. Maximal degree in co-relation 154724. Up to 11657 conditions per place. [2023-08-24 07:47:21,588 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 895 selfloop transitions, 298 changer transitions 6/1199 dead transitions. [2023-08-24 07:47:21,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1199 transitions, 44277 flow [2023-08-24 07:47:21,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:47:21,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:47:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-08-24 07:47:21,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37061646363971945 [2023-08-24 07:47:21,590 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-08-24 07:47:21,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-08-24 07:47:21,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:47:21,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-08-24 07:47:21,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:21,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:21,594 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:21,594 INFO L175 Difference]: Start difference. First operand has 472 places, 1148 transitions, 41487 flow. Second operand 7 states and 2008 transitions. [2023-08-24 07:47:21,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1199 transitions, 44277 flow [2023-08-24 07:47:28,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1199 transitions, 43845 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 07:47:28,778 INFO L231 Difference]: Finished difference. Result has 476 places, 1146 transitions, 41567 flow [2023-08-24 07:47:28,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=41008, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=849, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41567, PETRI_PLACES=476, PETRI_TRANSITIONS=1146} [2023-08-24 07:47:28,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 446 predicate places. [2023-08-24 07:47:28,779 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 1146 transitions, 41567 flow [2023-08-24 07:47:28,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:28,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:47:28,779 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:47:28,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2023-08-24 07:47:28,782 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:47:28,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:47:28,782 INFO L85 PathProgramCache]: Analyzing trace with hash 404194682, now seen corresponding path program 50 times [2023-08-24 07:47:28,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:47:28,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607550348] [2023-08-24 07:47:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:47:28,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:47:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:47:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:47:29,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:47:29,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607550348] [2023-08-24 07:47:29,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607550348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:47:29,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:47:29,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:47:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821660842] [2023-08-24 07:47:29,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:47:29,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:47:29,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:47:29,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:47:29,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:47:29,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:47:29,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 1146 transitions, 41567 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:29,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:47:29,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:47:29,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:47:36,009 INFO L124 PetriNetUnfolderBase]: 9134/16071 cut-off events. [2023-08-24 07:47:36,009 INFO L125 PetriNetUnfolderBase]: For 757938/757938 co-relation queries the response was YES. [2023-08-24 07:47:36,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154206 conditions, 16071 events. 9134/16071 cut-off events. For 757938/757938 co-relation queries the response was YES. Maximal size of possible extension queue 1005. Compared 129529 event pairs, 3246 based on Foata normal form. 18/16089 useless extension candidates. Maximal degree in co-relation 154046. Up to 11657 conditions per place. [2023-08-24 07:47:36,290 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 897 selfloop transitions, 295 changer transitions 1/1193 dead transitions. [2023-08-24 07:47:36,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 1193 transitions, 44300 flow [2023-08-24 07:47:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:47:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:47:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2007 transitions. [2023-08-24 07:47:36,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704318936877076 [2023-08-24 07:47:36,292 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2007 transitions. [2023-08-24 07:47:36,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2007 transitions. [2023-08-24 07:47:36,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:47:36,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2007 transitions. [2023-08-24 07:47:36,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.7142857142857) internal successors, (2007), 7 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:36,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:36,296 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:36,296 INFO L175 Difference]: Start difference. First operand has 476 places, 1146 transitions, 41567 flow. Second operand 7 states and 2007 transitions. [2023-08-24 07:47:36,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 1193 transitions, 44300 flow [2023-08-24 07:47:43,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1193 transitions, 43744 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-24 07:47:43,368 INFO L231 Difference]: Finished difference. Result has 476 places, 1142 transitions, 41474 flow [2023-08-24 07:47:43,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=40924, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=848, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41474, PETRI_PLACES=476, PETRI_TRANSITIONS=1142} [2023-08-24 07:47:43,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 446 predicate places. [2023-08-24 07:47:43,369 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 1142 transitions, 41474 flow [2023-08-24 07:47:43,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:43,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:47:43,370 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:47:43,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2023-08-24 07:47:43,370 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:47:43,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:47:43,370 INFO L85 PathProgramCache]: Analyzing trace with hash 300270924, now seen corresponding path program 51 times [2023-08-24 07:47:43,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:47:43,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174571698] [2023-08-24 07:47:43,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:47:43,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:47:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:47:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:47:43,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:47:43,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174571698] [2023-08-24 07:47:43,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174571698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:47:43,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:47:43,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:47:43,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434226363] [2023-08-24 07:47:43,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:47:43,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:47:43,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:47:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:47:43,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:47:43,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 774 [2023-08-24 07:47:43,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 1142 transitions, 41474 flow. Second operand has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:43,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:47:43,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 774 [2023-08-24 07:47:43,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:47:50,383 INFO L124 PetriNetUnfolderBase]: 9107/16010 cut-off events. [2023-08-24 07:47:50,384 INFO L125 PetriNetUnfolderBase]: For 757002/757002 co-relation queries the response was YES. [2023-08-24 07:47:50,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153623 conditions, 16010 events. 9107/16010 cut-off events. For 757002/757002 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 128749 event pairs, 3234 based on Foata normal form. 16/16026 useless extension candidates. Maximal degree in co-relation 153464. Up to 11657 conditions per place. [2023-08-24 07:47:50,561 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 890 selfloop transitions, 296 changer transitions 0/1186 dead transitions. [2023-08-24 07:47:50,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 1186 transitions, 44163 flow [2023-08-24 07:47:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:47:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:47:50,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-08-24 07:47:50,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3698781838316722 [2023-08-24 07:47:50,563 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-08-24 07:47:50,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-08-24 07:47:50,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:47:50,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-08-24 07:47:50,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:50,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:50,567 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:50,567 INFO L175 Difference]: Start difference. First operand has 476 places, 1142 transitions, 41474 flow. Second operand 7 states and 2004 transitions. [2023-08-24 07:47:50,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 1186 transitions, 44163 flow [2023-08-24 07:47:57,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1186 transitions, 43820 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-24 07:47:57,631 INFO L231 Difference]: Finished difference. Result has 478 places, 1140 transitions, 41641 flow [2023-08-24 07:47:57,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=40949, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=843, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=41641, PETRI_PLACES=478, PETRI_TRANSITIONS=1140} [2023-08-24 07:47:57,631 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 448 predicate places. [2023-08-24 07:47:57,632 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 1140 transitions, 41641 flow [2023-08-24 07:47:57,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 278.14285714285717) internal successors, (1947), 7 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:57,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:47:57,632 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:47:57,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2023-08-24 07:47:57,632 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:47:57,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:47:57,632 INFO L85 PathProgramCache]: Analyzing trace with hash -985909995, now seen corresponding path program 49 times [2023-08-24 07:47:57,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:47:57,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555276239] [2023-08-24 07:47:57,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:47:57,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:47:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:47:57,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:47:57,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:47:57,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555276239] [2023-08-24 07:47:57,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555276239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:47:57,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:47:57,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:47:57,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710587962] [2023-08-24 07:47:57,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:47:57,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:47:57,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:47:57,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:47:57,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:47:57,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:47:57,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 1140 transitions, 41641 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:57,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:47:57,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:47:57,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:48:05,164 INFO L124 PetriNetUnfolderBase]: 9961/17568 cut-off events. [2023-08-24 07:48:05,164 INFO L125 PetriNetUnfolderBase]: For 793456/793456 co-relation queries the response was YES. [2023-08-24 07:48:05,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165908 conditions, 17568 events. 9961/17568 cut-off events. For 793456/793456 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 144298 event pairs, 1858 based on Foata normal form. 12/17580 useless extension candidates. Maximal degree in co-relation 165750. Up to 13633 conditions per place. [2023-08-24 07:48:05,397 INFO L140 encePairwiseOnDemand]: 766/774 looper letters, 999 selfloop transitions, 334 changer transitions 0/1333 dead transitions. [2023-08-24 07:48:05,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 1333 transitions, 49133 flow [2023-08-24 07:48:05,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:48:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:48:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2023-08-24 07:48:05,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3623108157991879 [2023-08-24 07:48:05,399 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2023-08-24 07:48:05,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2023-08-24 07:48:05,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:48:05,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2023-08-24 07:48:05,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:48:05,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:48:05,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 774.0) internal successors, (6192), 8 states have internal predecessors, (6192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:48:05,403 INFO L175 Difference]: Start difference. First operand has 478 places, 1140 transitions, 41641 flow. Second operand 7 states and 1963 transitions. [2023-08-24 07:48:05,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 1333 transitions, 49133 flow [2023-08-24 07:48:13,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 1333 transitions, 48519 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-24 07:48:13,201 INFO L231 Difference]: Finished difference. Result has 483 places, 1181 transitions, 43478 flow [2023-08-24 07:48:13,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=774, PETRI_DIFFERENCE_MINUEND_FLOW=41043, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43478, PETRI_PLACES=483, PETRI_TRANSITIONS=1181} [2023-08-24 07:48:13,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2023-08-24 07:48:13,202 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 1181 transitions, 43478 flow [2023-08-24 07:48:13,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:48:13,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:48:13,202 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:48:13,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2023-08-24 07:48:13,202 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:48:13,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:48:13,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1535027663, now seen corresponding path program 50 times [2023-08-24 07:48:13,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:48:13,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180963934] [2023-08-24 07:48:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:48:13,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:48:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:48:13,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 07:48:13,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:48:13,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180963934] [2023-08-24 07:48:13,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180963934] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:48:13,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:48:13,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 07:48:13,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756919154] [2023-08-24 07:48:13,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:48:13,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:48:13,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:48:13,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:48:13,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:48:13,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 774 [2023-08-24 07:48:13,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1181 transitions, 43478 flow. Second operand has 7 states, 7 states have (on average 272.14285714285717) internal successors, (1905), 7 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:48:13,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:48:13,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 774 [2023-08-24 07:48:13,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-24 07:48:20,909 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 07:48:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:48:21,000 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 07:48:21,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2023-08-24 07:48:21,000 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 269/774 universal loopers) in iteration 110,while PetriNetUnfolder was constructing finite prefix that currently has 168844 conditions, 17416 events (9947/17415 cut-off events. For 823624/823624 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 143659 event pairs, 1006 based on Foata normal form. 16/17525 useless extension candidates. Maximal degree in co-relation 168682. Up to 10615 conditions per place.). [2023-08-24 07:48:21,002 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 07:48:21,002 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 07:48:21,002 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 07:48:21,002 INFO L445 BasicCegarLoop]: Path program histogram: [51, 50, 8, 1] [2023-08-24 07:48:21,004 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 07:48:21,004 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 07:48:21,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 07:48:21 BasicIcfg [2023-08-24 07:48:21,005 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 07:48:21,006 INFO L158 Benchmark]: Toolchain (without parser) took 819108.72ms. Allocated memory was 398.5MB in the beginning and 9.3GB in the end (delta: 8.9GB). Free memory was 373.5MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. [2023-08-24 07:48:21,006 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 398.5MB. Free memory is still 375.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 07:48:21,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.20ms. Allocated memory is still 398.5MB. Free memory was 372.9MB in the beginning and 360.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 07:48:21,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.31ms. Allocated memory is still 398.5MB. Free memory was 360.2MB in the beginning and 357.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 07:48:21,006 INFO L158 Benchmark]: Boogie Preprocessor took 43.10ms. Allocated memory is still 398.5MB. Free memory was 357.6MB in the beginning and 355.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 07:48:21,006 INFO L158 Benchmark]: RCFGBuilder took 458.17ms. Allocated memory is still 398.5MB. Free memory was 355.5MB in the beginning and 329.5MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-24 07:48:21,006 INFO L158 Benchmark]: TraceAbstraction took 818343.17ms. Allocated memory was 398.5MB in the beginning and 9.3GB in the end (delta: 8.9GB). Free memory was 328.3MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2023-08-24 07:48:21,007 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 398.5MB. Free memory is still 375.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 203.20ms. Allocated memory is still 398.5MB. Free memory was 372.9MB in the beginning and 360.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.31ms. Allocated memory is still 398.5MB. Free memory was 360.2MB in the beginning and 357.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 43.10ms. Allocated memory is still 398.5MB. Free memory was 357.6MB in the beginning and 355.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 458.17ms. Allocated memory is still 398.5MB. Free memory was 355.5MB in the beginning and 329.5MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 818343.17ms. Allocated memory was 398.5MB in the beginning and 9.3GB in the end (delta: 8.9GB). Free memory was 328.3MB in the beginning and 7.5GB in the end (delta: -7.1GB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1s, 332 PlacesBefore, 30 PlacesAfterwards, 348 TransitionsBefore, 24 TransitionsAfterwards, 28350 CoEnabledTransitionPairs, 8 FixpointIterations, 127 TrivialSequentialCompositions, 178 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 74 ConcurrentYvCompositions, 22 ChoiceCompositions, 413 TotalNumberOfCompositions, 26347 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25732, independent: 25710, independent conditional: 0, independent unconditional: 25710, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 17272, independent: 17259, independent conditional: 0, independent unconditional: 17259, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25732, independent: 8451, independent conditional: 0, independent unconditional: 8451, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 17272, unknown conditional: 0, unknown unconditional: 17272] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 269/774 universal loopers) in iteration 110,while PetriNetUnfolder was constructing finite prefix that currently has 168844 conditions, 17416 events (9947/17415 cut-off events. For 823624/823624 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 143659 event pairs, 1006 based on Foata normal form. 16/17525 useless extension candidates. Maximal degree in co-relation 168682. Up to 10615 conditions per place.). - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 269/774 universal loopers) in iteration 110,while PetriNetUnfolder was constructing finite prefix that currently has 168844 conditions, 17416 events (9947/17415 cut-off events. For 823624/823624 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 143659 event pairs, 1006 based on Foata normal form. 16/17525 useless extension candidates. Maximal degree in co-relation 168682. Up to 10615 conditions per place.). - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 269/774 universal loopers) in iteration 110,while PetriNetUnfolder was constructing finite prefix that currently has 168844 conditions, 17416 events (9947/17415 cut-off events. For 823624/823624 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 143659 event pairs, 1006 based on Foata normal form. 16/17525 useless extension candidates. Maximal degree in co-relation 168682. Up to 10615 conditions per place.). - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 269/774 universal loopers) in iteration 110,while PetriNetUnfolder was constructing finite prefix that currently has 168844 conditions, 17416 events (9947/17415 cut-off events. For 823624/823624 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 143659 event pairs, 1006 based on Foata normal form. 16/17525 useless extension candidates. Maximal degree in co-relation 168682. Up to 10615 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 510 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 818.2s, OverallIterations: 110, TraceHistogramMax: 3, PathProgramHistogramMax: 51, EmptinessCheckTime: 0.0s, AutomataDifference: 775.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6794 SdHoareTripleChecker+Valid, 15.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6794 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 12.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 179 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26822 IncrementalHoareTripleChecker+Invalid, 27001 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 179 mSolverCounterUnsat, 0 mSDtfsCounter, 26822 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1665 GetRequests, 780 SyntacticMatches, 1 SemanticMatches, 884 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43478occurred in iteration=109, InterpolantAutomatonStates: 789, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 27.6s InterpolantComputationTime, 2815 NumberOfCodeBlocks, 2814 NumberOfCodeBlocksAsserted, 128 NumberOfCheckSat, 2878 ConstructedInterpolants, 0 QuantifiedInterpolants, 18612 SizeOfPredicates, 82 NumberOfNonLiveVariables, 2023 ConjunctsInSsa, 118 ConjunctsInUnsatCore, 126 InterpolantComputations, 106 PerfectInterpolantSequences, 830/850 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown