/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 06:43:40,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 06:43:40,745 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 [2023-08-27 06:43:40,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 06:43:40,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 06:43:40,780 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 06:43:40,780 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 06:43:40,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 06:43:40,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 06:43:40,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 06:43:40,784 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 06:43:40,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 06:43:40,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 06:43:40,785 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 06:43:40,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 06:43:40,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 06:43:40,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 06:43:40,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 06:43:40,786 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 06:43:40,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 06:43:40,787 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 06:43:40,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 06:43:40,790 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 06:43:40,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 06:43:40,792 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 06:43:40,792 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 06:43:40,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 06:43:40,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:43:40,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 06:43:40,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 06:43:40,793 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 06:43:40,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 06:43:40,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 06:43:40,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 06:43:40,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 06:43:40,794 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 06:43:41,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 06:43:41,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 06:43:41,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 06:43:41,070 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 06:43:41,070 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 06:43:41,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-27 06:43:42,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 06:43:42,239 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 06:43:42,240 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2023-08-27 06:43:42,248 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf258e79f/989e59773b68411896bb79b47b942686/FLAG2b9e4a8da [2023-08-27 06:43:42,260 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf258e79f/989e59773b68411896bb79b47b942686 [2023-08-27 06:43:42,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 06:43:42,266 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 06:43:42,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 06:43:42,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 06:43:42,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 06:43:42,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3926e5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42, skipping insertion in model container [2023-08-27 06:43:42,271 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,287 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 06:43:42,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:43:42,430 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 06:43:42,458 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:43:42,469 INFO L206 MainTranslator]: Completed translation [2023-08-27 06:43:42,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42 WrapperNode [2023-08-27 06:43:42,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 06:43:42,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 06:43:42,470 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 06:43:42,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 06:43:42,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,503 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2023-08-27 06:43:42,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 06:43:42,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 06:43:42,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 06:43:42,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 06:43:42,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,513 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,529 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 06:43:42,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 06:43:42,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 06:43:42,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 06:43:42,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (1/1) ... [2023-08-27 06:43:42,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:43:42,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:43:42,551 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) [2023-08-27 06:43:42,557 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 [2023-08-27 06:43:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 06:43:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 06:43:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 06:43:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 06:43:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 06:43:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 06:43:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 06:43:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 06:43:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 06:43:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 06:43:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 06:43:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 06:43:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 06:43:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 06:43:42,576 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 06:43:42,640 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 06:43:42,642 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 06:43:42,784 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 06:43:42,788 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 06:43:42,789 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 06:43:42,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:43:42 BoogieIcfgContainer [2023-08-27 06:43:42,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 06:43:42,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 06:43:42,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 06:43:42,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 06:43:42,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:43:42" (1/3) ... [2023-08-27 06:43:42,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b864dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:43:42, skipping insertion in model container [2023-08-27 06:43:42,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:43:42" (2/3) ... [2023-08-27 06:43:42,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b864dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:43:42, skipping insertion in model container [2023-08-27 06:43:42,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:43:42" (3/3) ... [2023-08-27 06:43:42,795 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2023-08-27 06:43:42,805 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 06:43:42,805 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 06:43:42,805 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 06:43:42,855 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 06:43:42,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 242 flow [2023-08-27 06:43:42,910 INFO L124 PetriNetUnfolderBase]: 7/106 cut-off events. [2023-08-27 06:43:42,910 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 06:43:42,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 7/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-27 06:43:42,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 109 transitions, 242 flow [2023-08-27 06:43:42,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 95 transitions, 208 flow [2023-08-27 06:43:42,918 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 06:43:42,923 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 95 transitions, 208 flow [2023-08-27 06:43:42,925 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 95 transitions, 208 flow [2023-08-27 06:43:42,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 95 transitions, 208 flow [2023-08-27 06:43:42,944 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-08-27 06:43:42,944 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 06:43:42,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 7/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 81 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-27 06:43:42,946 INFO L119 LiptonReduction]: Number of co-enabled transitions 1518 [2023-08-27 06:43:44,944 INFO L134 LiptonReduction]: Checked pairs total: 1467 [2023-08-27 06:43:44,944 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-27 06:43:44,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 06:43:44,960 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;@2824abdc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 06:43:44,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-27 06:43:44,971 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 06:43:44,971 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-08-27 06:43:44,971 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 06:43:44,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:44,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:43:44,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:43:44,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:44,977 INFO L85 PathProgramCache]: Analyzing trace with hash 895815217, now seen corresponding path program 1 times [2023-08-27 06:43:44,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:44,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247041584] [2023-08-27 06:43:44,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:44,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:45,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:45,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247041584] [2023-08-27 06:43:45,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247041584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:43:45,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:43:45,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:43:45,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473425153] [2023-08-27 06:43:45,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:43:45,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:43:45,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:45,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:43:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:43:45,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 190 [2023-08-27 06:43:45,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:45,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:45,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 190 [2023-08-27 06:43:45,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:45,543 INFO L124 PetriNetUnfolderBase]: 359/506 cut-off events. [2023-08-27 06:43:45,544 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-27 06:43:45,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 506 events. 359/506 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1597 event pairs, 39 based on Foata normal form. 1/306 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2023-08-27 06:43:45,547 INFO L140 encePairwiseOnDemand]: 185/190 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-08-27 06:43:45,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 179 flow [2023-08-27 06:43:45,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:43:45,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:43:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-27 06:43:45,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421052631578948 [2023-08-27 06:43:45,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-27 06:43:45,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-27 06:43:45,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:45,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-27 06:43:45,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:45,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:45,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:45,566 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 309 transitions. [2023-08-27 06:43:45,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 179 flow [2023-08-27 06:43:45,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 06:43:45,569 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2023-08-27 06:43:45,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-08-27 06:43:45,572 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-08-27 06:43:45,572 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2023-08-27 06:43:45,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:45,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:45,573 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] [2023-08-27 06:43:45,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 06:43:45,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:43:45,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:45,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1693606568, now seen corresponding path program 1 times [2023-08-27 06:43:45,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:45,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436625354] [2023-08-27 06:43:45,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:45,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:45,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:45,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436625354] [2023-08-27 06:43:45,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436625354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:43:45,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:43:45,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:43:45,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117234382] [2023-08-27 06:43:45,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:43:45,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:43:45,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:45,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:43:45,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:43:45,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:43:45,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:45,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:45,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:43:45,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:45,966 INFO L124 PetriNetUnfolderBase]: 597/900 cut-off events. [2023-08-27 06:43:45,966 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2023-08-27 06:43:45,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 900 events. 597/900 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3307 event pairs, 166 based on Foata normal form. 6/906 useless extension candidates. Maximal degree in co-relation 616. Up to 420 conditions per place. [2023-08-27 06:43:45,971 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 69 selfloop transitions, 8 changer transitions 3/80 dead transitions. [2023-08-27 06:43:45,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 80 transitions, 393 flow [2023-08-27 06:43:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:43:45,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:43:45,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-27 06:43:45,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548872180451128 [2023-08-27 06:43:45,974 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-27 06:43:45,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-27 06:43:45,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:45,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-27 06:43:45,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:45,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:45,979 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:45,979 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 7 states and 605 transitions. [2023-08-27 06:43:45,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 80 transitions, 393 flow [2023-08-27 06:43:45,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 80 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:43:45,981 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 141 flow [2023-08-27 06:43:45,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=141, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-27 06:43:45,981 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-08-27 06:43:45,981 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 141 flow [2023-08-27 06:43:45,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:45,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:45,982 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] [2023-08-27 06:43:45,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 06:43:45,982 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:43:45,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:45,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2015575896, now seen corresponding path program 2 times [2023-08-27 06:43:45,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:45,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018043797] [2023-08-27 06:43:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:45,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:46,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:46,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018043797] [2023-08-27 06:43:46,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018043797] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:46,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044594961] [2023-08-27 06:43:46,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:43:46,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:46,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:43:46,150 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) [2023-08-27 06:43:46,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 06:43:46,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:43:46,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:43:46,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 06:43:46,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:43:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:46,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:43:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:46,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044594961] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:46,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:43:46,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2023-08-27 06:43:46,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350096602] [2023-08-27 06:43:46,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:43:46,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:43:46,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:46,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:43:46,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:43:46,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 06:43:46,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:46,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:46,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 06:43:46,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:46,831 INFO L124 PetriNetUnfolderBase]: 816/1236 cut-off events. [2023-08-27 06:43:46,831 INFO L125 PetriNetUnfolderBase]: For 1522/1577 co-relation queries the response was YES. [2023-08-27 06:43:46,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 1236 events. 816/1236 cut-off events. For 1522/1577 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5169 event pairs, 172 based on Foata normal form. 6/1240 useless extension candidates. Maximal degree in co-relation 1784. Up to 398 conditions per place. [2023-08-27 06:43:46,837 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 96 selfloop transitions, 18 changer transitions 1/116 dead transitions. [2023-08-27 06:43:46,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 116 transitions, 708 flow [2023-08-27 06:43:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:43:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:43:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 743 transitions. [2023-08-27 06:43:46,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888157894736842 [2023-08-27 06:43:46,839 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 743 transitions. [2023-08-27 06:43:46,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 743 transitions. [2023-08-27 06:43:46,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:46,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 743 transitions. [2023-08-27 06:43:46,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.875) internal successors, (743), 8 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:46,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 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) [2023-08-27 06:43:46,843 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 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) [2023-08-27 06:43:46,844 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 141 flow. Second operand 8 states and 743 transitions. [2023-08-27 06:43:46,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 116 transitions, 708 flow [2023-08-27 06:43:46,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 116 transitions, 664 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-27 06:43:46,848 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 304 flow [2023-08-27 06:43:46,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=304, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-08-27 06:43:46,849 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2023-08-27 06:43:46,849 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 304 flow [2023-08-27 06:43:46,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:46,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:46,849 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] [2023-08-27 06:43:46,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-27 06:43:47,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:47,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:43:47,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:47,057 INFO L85 PathProgramCache]: Analyzing trace with hash -504581648, now seen corresponding path program 3 times [2023-08-27 06:43:47,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:47,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406630096] [2023-08-27 06:43:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:47,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:47,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:47,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406630096] [2023-08-27 06:43:47,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406630096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:43:47,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:43:47,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:43:47,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796717977] [2023-08-27 06:43:47,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:43:47,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:43:47,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:47,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:43:47,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:43:47,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:43:47,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:47,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:47,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:43:47,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:47,391 INFO L124 PetriNetUnfolderBase]: 1018/1511 cut-off events. [2023-08-27 06:43:47,391 INFO L125 PetriNetUnfolderBase]: For 4489/4489 co-relation queries the response was YES. [2023-08-27 06:43:47,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5960 conditions, 1511 events. 1018/1511 cut-off events. For 4489/4489 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5945 event pairs, 501 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 4481. Up to 1267 conditions per place. [2023-08-27 06:43:47,398 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 67 selfloop transitions, 22 changer transitions 4/93 dead transitions. [2023-08-27 06:43:47,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 93 transitions, 759 flow [2023-08-27 06:43:47,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:43:47,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:43:47,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2023-08-27 06:43:47,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44511278195488724 [2023-08-27 06:43:47,400 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2023-08-27 06:43:47,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2023-08-27 06:43:47,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:47,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2023-08-27 06:43:47,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:47,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:47,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:47,403 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 304 flow. Second operand 7 states and 592 transitions. [2023-08-27 06:43:47,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 93 transitions, 759 flow [2023-08-27 06:43:47,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 751 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-27 06:43:47,413 INFO L231 Difference]: Finished difference. Result has 57 places, 65 transitions, 518 flow [2023-08-27 06:43:47,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=57, PETRI_TRANSITIONS=65} [2023-08-27 06:43:47,413 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2023-08-27 06:43:47,414 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 65 transitions, 518 flow [2023-08-27 06:43:47,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:47,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:47,414 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] [2023-08-27 06:43:47,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 06:43:47,414 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:43:47,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:47,414 INFO L85 PathProgramCache]: Analyzing trace with hash 273786132, now seen corresponding path program 4 times [2023-08-27 06:43:47,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:47,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893632059] [2023-08-27 06:43:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:47,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:47,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893632059] [2023-08-27 06:43:47,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893632059] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554653678] [2023-08-27 06:43:47,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:43:47,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:47,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:43:47,518 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) [2023-08-27 06:43:47,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 06:43:47,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:43:47,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:43:47,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 06:43:47,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:43:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:47,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:43:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:47,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554653678] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:43:47,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:43:47,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-08-27 06:43:47,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747835274] [2023-08-27 06:43:47,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:43:47,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:43:47,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:47,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:43:47,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:43:47,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:43:47,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 65 transitions, 518 flow. Second operand has 16 states, 16 states have (on average 78.125) internal successors, (1250), 16 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:47,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:47,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:43:47,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:48,881 INFO L124 PetriNetUnfolderBase]: 1574/2231 cut-off events. [2023-08-27 06:43:48,881 INFO L125 PetriNetUnfolderBase]: For 10230/10230 co-relation queries the response was YES. [2023-08-27 06:43:48,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10328 conditions, 2231 events. 1574/2231 cut-off events. For 10230/10230 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8821 event pairs, 422 based on Foata normal form. 36/2267 useless extension candidates. Maximal degree in co-relation 7505. Up to 1310 conditions per place. [2023-08-27 06:43:48,897 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 129 selfloop transitions, 106 changer transitions 0/235 dead transitions. [2023-08-27 06:43:48,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 235 transitions, 2151 flow [2023-08-27 06:43:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-27 06:43:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-27 06:43:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1692 transitions. [2023-08-27 06:43:48,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44526315789473686 [2023-08-27 06:43:48,901 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1692 transitions. [2023-08-27 06:43:48,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1692 transitions. [2023-08-27 06:43:48,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:48,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1692 transitions. [2023-08-27 06:43:48,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 84.6) internal successors, (1692), 20 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:48,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:48,943 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:48,943 INFO L175 Difference]: Start difference. First operand has 57 places, 65 transitions, 518 flow. Second operand 20 states and 1692 transitions. [2023-08-27 06:43:48,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 235 transitions, 2151 flow [2023-08-27 06:43:48,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 235 transitions, 2091 flow, removed 30 selfloop flow, removed 0 redundant places. [2023-08-27 06:43:48,964 INFO L231 Difference]: Finished difference. Result has 88 places, 157 transitions, 1750 flow [2023-08-27 06:43:48,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1750, PETRI_PLACES=88, PETRI_TRANSITIONS=157} [2023-08-27 06:43:48,966 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2023-08-27 06:43:48,966 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 157 transitions, 1750 flow [2023-08-27 06:43:48,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 78.125) internal successors, (1250), 16 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:48,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:48,967 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] [2023-08-27 06:43:48,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 06:43:49,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:49,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:43:49,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1040607848, now seen corresponding path program 1 times [2023-08-27 06:43:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:49,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131281501] [2023-08-27 06:43:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:49,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:49,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:49,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131281501] [2023-08-27 06:43:49,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131281501] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:49,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463181545] [2023-08-27 06:43:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:49,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:49,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:43:49,316 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) [2023-08-27 06:43:49,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 06:43:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:49,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 06:43:49,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:43:49,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:49,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:43:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463181545] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:43:49,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:43:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 06:43:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694536684] [2023-08-27 06:43:49,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:43:49,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:43:49,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:43:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:43:49,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:43:49,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 157 transitions, 1750 flow. Second operand has 12 states, 12 states have (on average 78.83333333333333) internal successors, (946), 12 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:49,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:49,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:43:49,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:50,360 INFO L124 PetriNetUnfolderBase]: 2039/2898 cut-off events. [2023-08-27 06:43:50,360 INFO L125 PetriNetUnfolderBase]: For 24940/24940 co-relation queries the response was YES. [2023-08-27 06:43:50,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17387 conditions, 2898 events. 2039/2898 cut-off events. For 24940/24940 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 12331 event pairs, 356 based on Foata normal form. 22/2920 useless extension candidates. Maximal degree in co-relation 16487. Up to 1128 conditions per place. [2023-08-27 06:43:50,418 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 243 selfloop transitions, 82 changer transitions 2/327 dead transitions. [2023-08-27 06:43:50,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 327 transitions, 3995 flow [2023-08-27 06:43:50,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:43:50,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:43:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 876 transitions. [2023-08-27 06:43:50,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610526315789474 [2023-08-27 06:43:50,421 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 876 transitions. [2023-08-27 06:43:50,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 876 transitions. [2023-08-27 06:43:50,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:50,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 876 transitions. [2023-08-27 06:43:50,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:50,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:50,425 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:50,425 INFO L175 Difference]: Start difference. First operand has 88 places, 157 transitions, 1750 flow. Second operand 10 states and 876 transitions. [2023-08-27 06:43:50,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 327 transitions, 3995 flow [2023-08-27 06:43:50,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 327 transitions, 3109 flow, removed 386 selfloop flow, removed 2 redundant places. [2023-08-27 06:43:50,491 INFO L231 Difference]: Finished difference. Result has 102 places, 198 transitions, 1943 flow [2023-08-27 06:43:50,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1943, PETRI_PLACES=102, PETRI_TRANSITIONS=198} [2023-08-27 06:43:50,492 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2023-08-27 06:43:50,492 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 198 transitions, 1943 flow [2023-08-27 06:43:50,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.83333333333333) internal successors, (946), 12 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:50,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:50,493 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] [2023-08-27 06:43:50,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 06:43:50,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:50,697 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:43:50,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:50,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1484610118, now seen corresponding path program 5 times [2023-08-27 06:43:50,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:50,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638280829] [2023-08-27 06:43:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:50,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:50,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:50,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638280829] [2023-08-27 06:43:50,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638280829] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:50,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353941973] [2023-08-27 06:43:50,834 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:43:50,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:50,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:43:50,838 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) [2023-08-27 06:43:50,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 06:43:50,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:43:50,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:43:50,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 06:43:50,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:43:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:50,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:43:51,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:51,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353941973] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:43:51,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:43:51,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2023-08-27 06:43:51,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337914125] [2023-08-27 06:43:51,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:43:51,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:43:51,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:51,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:43:51,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2023-08-27 06:43:51,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:43:51,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 198 transitions, 1943 flow. Second operand has 17 states, 17 states have (on average 77.88235294117646) internal successors, (1324), 17 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:51,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:51,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:43:51,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:51,944 INFO L124 PetriNetUnfolderBase]: 2873/4006 cut-off events. [2023-08-27 06:43:51,944 INFO L125 PetriNetUnfolderBase]: For 39163/39163 co-relation queries the response was YES. [2023-08-27 06:43:51,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24491 conditions, 4006 events. 2873/4006 cut-off events. For 39163/39163 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 17087 event pairs, 511 based on Foata normal form. 44/4050 useless extension candidates. Maximal degree in co-relation 23530. Up to 2545 conditions per place. [2023-08-27 06:43:51,978 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 239 selfloop transitions, 232 changer transitions 2/473 dead transitions. [2023-08-27 06:43:51,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 473 transitions, 5515 flow [2023-08-27 06:43:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-27 06:43:51,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-27 06:43:51,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1855 transitions. [2023-08-27 06:43:51,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4437799043062201 [2023-08-27 06:43:51,982 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1855 transitions. [2023-08-27 06:43:51,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1855 transitions. [2023-08-27 06:43:51,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:51,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1855 transitions. [2023-08-27 06:43:51,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 84.31818181818181) internal successors, (1855), 22 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:51,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 190.0) internal successors, (4370), 23 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:51,991 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 190.0) internal successors, (4370), 23 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:51,992 INFO L175 Difference]: Start difference. First operand has 102 places, 198 transitions, 1943 flow. Second operand 22 states and 1855 transitions. [2023-08-27 06:43:51,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 473 transitions, 5515 flow [2023-08-27 06:43:52,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 473 transitions, 5467 flow, removed 24 selfloop flow, removed 0 redundant places. [2023-08-27 06:43:52,066 INFO L231 Difference]: Finished difference. Result has 134 places, 336 transitions, 4345 flow [2023-08-27 06:43:52,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4345, PETRI_PLACES=134, PETRI_TRANSITIONS=336} [2023-08-27 06:43:52,067 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2023-08-27 06:43:52,067 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 336 transitions, 4345 flow [2023-08-27 06:43:52,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 77.88235294117646) internal successors, (1324), 17 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:52,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:52,068 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] [2023-08-27 06:43:52,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 06:43:52,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:52,273 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:43:52,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:52,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1955701050, now seen corresponding path program 2 times [2023-08-27 06:43:52,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:52,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237623482] [2023-08-27 06:43:52,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:52,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:52,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:52,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237623482] [2023-08-27 06:43:52,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237623482] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:52,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698483214] [2023-08-27 06:43:52,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:43:52,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:52,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:43:52,373 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) [2023-08-27 06:43:52,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 06:43:52,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:43:52,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:43:52,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 06:43:52,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:43:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:52,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:43:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:52,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698483214] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:43:52,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:43:52,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2023-08-27 06:43:52,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094958063] [2023-08-27 06:43:52,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:43:52,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:43:52,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:43:52,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:43:52,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 190 [2023-08-27 06:43:52,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 336 transitions, 4345 flow. Second operand has 18 states, 18 states have (on average 75.38888888888889) internal successors, (1357), 18 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:52,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:52,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 190 [2023-08-27 06:43:52,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:55,157 INFO L124 PetriNetUnfolderBase]: 4618/6458 cut-off events. [2023-08-27 06:43:55,158 INFO L125 PetriNetUnfolderBase]: For 88664/88664 co-relation queries the response was YES. [2023-08-27 06:43:55,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45991 conditions, 6458 events. 4618/6458 cut-off events. For 88664/88664 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 30288 event pairs, 411 based on Foata normal form. 60/6518 useless extension candidates. Maximal degree in co-relation 44548. Up to 2398 conditions per place. [2023-08-27 06:43:55,234 INFO L140 encePairwiseOnDemand]: 179/190 looper letters, 406 selfloop transitions, 396 changer transitions 0/802 dead transitions. [2023-08-27 06:43:55,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 802 transitions, 11558 flow [2023-08-27 06:43:55,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 06:43:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 06:43:55,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2316 transitions. [2023-08-27 06:43:55,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43533834586466164 [2023-08-27 06:43:55,239 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2316 transitions. [2023-08-27 06:43:55,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2316 transitions. [2023-08-27 06:43:55,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:55,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2316 transitions. [2023-08-27 06:43:55,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 82.71428571428571) internal successors, (2316), 28 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:55,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:55,248 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:55,248 INFO L175 Difference]: Start difference. First operand has 134 places, 336 transitions, 4345 flow. Second operand 28 states and 2316 transitions. [2023-08-27 06:43:55,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 802 transitions, 11558 flow [2023-08-27 06:43:55,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 802 transitions, 10074 flow, removed 742 selfloop flow, removed 0 redundant places. [2023-08-27 06:43:55,647 INFO L231 Difference]: Finished difference. Result has 177 places, 578 transitions, 8096 flow [2023-08-27 06:43:55,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8096, PETRI_PLACES=177, PETRI_TRANSITIONS=578} [2023-08-27 06:43:55,648 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 148 predicate places. [2023-08-27 06:43:55,648 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 578 transitions, 8096 flow [2023-08-27 06:43:55,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 75.38888888888889) internal successors, (1357), 18 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:55,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:55,649 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] [2023-08-27 06:43:55,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 06:43:55,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:55,854 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:43:55,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:55,854 INFO L85 PathProgramCache]: Analyzing trace with hash -417324130, now seen corresponding path program 6 times [2023-08-27 06:43:55,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:55,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372109016] [2023-08-27 06:43:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:55,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:55,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:55,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372109016] [2023-08-27 06:43:55,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372109016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:43:55,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:43:55,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:43:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269882467] [2023-08-27 06:43:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:43:55,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:43:55,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:43:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:43:55,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:43:55,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 578 transitions, 8096 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:55,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:55,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:43:55,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:57,218 INFO L124 PetriNetUnfolderBase]: 4773/6735 cut-off events. [2023-08-27 06:43:57,219 INFO L125 PetriNetUnfolderBase]: For 106934/106934 co-relation queries the response was YES. [2023-08-27 06:43:57,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51817 conditions, 6735 events. 4773/6735 cut-off events. For 106934/106934 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 32381 event pairs, 294 based on Foata normal form. 34/6769 useless extension candidates. Maximal degree in co-relation 50971. Up to 2458 conditions per place. [2023-08-27 06:43:57,284 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 518 selfloop transitions, 318 changer transitions 2/838 dead transitions. [2023-08-27 06:43:57,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 838 transitions, 13808 flow [2023-08-27 06:43:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:43:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:43:57,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 868 transitions. [2023-08-27 06:43:57,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4568421052631579 [2023-08-27 06:43:57,287 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 868 transitions. [2023-08-27 06:43:57,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 868 transitions. [2023-08-27 06:43:57,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:57,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 868 transitions. [2023-08-27 06:43:57,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 86.8) internal successors, (868), 10 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:57,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:57,291 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:57,292 INFO L175 Difference]: Start difference. First operand has 177 places, 578 transitions, 8096 flow. Second operand 10 states and 868 transitions. [2023-08-27 06:43:57,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 838 transitions, 13808 flow [2023-08-27 06:43:57,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 838 transitions, 12295 flow, removed 756 selfloop flow, removed 1 redundant places. [2023-08-27 06:43:57,907 INFO L231 Difference]: Finished difference. Result has 190 places, 640 transitions, 9224 flow [2023-08-27 06:43:57,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=7341, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9224, PETRI_PLACES=190, PETRI_TRANSITIONS=640} [2023-08-27 06:43:57,908 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2023-08-27 06:43:57,908 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 640 transitions, 9224 flow [2023-08-27 06:43:57,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:57,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:43:57,909 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] [2023-08-27 06:43:57,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 06:43:57,909 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:43:57,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:43:57,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1884392078, now seen corresponding path program 7 times [2023-08-27 06:43:57,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:43:57,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491403510] [2023-08-27 06:43:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:43:57,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:43:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:58,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:43:58,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491403510] [2023-08-27 06:43:58,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491403510] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:58,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379098598] [2023-08-27 06:43:58,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:43:58,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:43:58,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:43:58,067 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) [2023-08-27 06:43:58,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 06:43:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:43:58,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 06:43:58,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:43:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:58,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:43:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:43:58,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379098598] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:43:58,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:43:58,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-27 06:43:58,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337113553] [2023-08-27 06:43:58,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:43:58,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:43:58,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:43:58,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:43:58,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-27 06:43:58,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 06:43:58,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 640 transitions, 9224 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:58,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:43:58,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 06:43:58,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:43:59,857 INFO L124 PetriNetUnfolderBase]: 5070/7231 cut-off events. [2023-08-27 06:43:59,859 INFO L125 PetriNetUnfolderBase]: For 105912/105948 co-relation queries the response was YES. [2023-08-27 06:43:59,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54677 conditions, 7231 events. 5070/7231 cut-off events. For 105912/105948 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 36169 event pairs, 531 based on Foata normal form. 38/7260 useless extension candidates. Maximal degree in co-relation 53612. Up to 2413 conditions per place. [2023-08-27 06:43:59,933 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 500 selfloop transitions, 260 changer transitions 0/771 dead transitions. [2023-08-27 06:43:59,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 771 transitions, 12310 flow [2023-08-27 06:43:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:43:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:43:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 741 transitions. [2023-08-27 06:43:59,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2023-08-27 06:43:59,934 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 741 transitions. [2023-08-27 06:43:59,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 741 transitions. [2023-08-27 06:43:59,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:43:59,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 741 transitions. [2023-08-27 06:43:59,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 92.625) internal successors, (741), 8 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:43:59,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 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) [2023-08-27 06:43:59,937 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 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) [2023-08-27 06:43:59,937 INFO L175 Difference]: Start difference. First operand has 190 places, 640 transitions, 9224 flow. Second operand 8 states and 741 transitions. [2023-08-27 06:43:59,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 771 transitions, 12310 flow [2023-08-27 06:44:00,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 771 transitions, 12042 flow, removed 134 selfloop flow, removed 0 redundant places. [2023-08-27 06:44:00,490 INFO L231 Difference]: Finished difference. Result has 202 places, 670 transitions, 10428 flow [2023-08-27 06:44:00,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=8984, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10428, PETRI_PLACES=202, PETRI_TRANSITIONS=670} [2023-08-27 06:44:00,491 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2023-08-27 06:44:00,491 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 670 transitions, 10428 flow [2023-08-27 06:44:00,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:00,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:00,492 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] [2023-08-27 06:44:00,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 06:44:00,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:44:00,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:00,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:00,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1392557114, now seen corresponding path program 8 times [2023-08-27 06:44:00,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:00,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643769528] [2023-08-27 06:44:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:00,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:00,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:00,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643769528] [2023-08-27 06:44:00,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643769528] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:00,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541816150] [2023-08-27 06:44:00,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:44:00,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:44:00,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:44:00,799 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) [2023-08-27 06:44:00,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 06:44:00,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:44:00,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:44:00,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 06:44:00,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:44:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:00,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:44:01,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:01,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541816150] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:44:01,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:44:01,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 06:44:01,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811505465] [2023-08-27 06:44:01,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:44:01,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:44:01,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:01,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:44:01,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:44:01,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:01,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 670 transitions, 10428 flow. Second operand has 12 states, 12 states have (on average 78.91666666666667) internal successors, (947), 12 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:01,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:01,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:01,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:02,638 INFO L124 PetriNetUnfolderBase]: 5355/7765 cut-off events. [2023-08-27 06:44:02,639 INFO L125 PetriNetUnfolderBase]: For 120161/120161 co-relation queries the response was YES. [2023-08-27 06:44:02,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60196 conditions, 7765 events. 5355/7765 cut-off events. For 120161/120161 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 40517 event pairs, 576 based on Foata normal form. 20/7785 useless extension candidates. Maximal degree in co-relation 59284. Up to 3056 conditions per place. [2023-08-27 06:44:02,703 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 489 selfloop transitions, 340 changer transitions 2/831 dead transitions. [2023-08-27 06:44:02,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 831 transitions, 14387 flow [2023-08-27 06:44:02,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:44:02,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:44:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 872 transitions. [2023-08-27 06:44:02,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4589473684210526 [2023-08-27 06:44:02,705 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 872 transitions. [2023-08-27 06:44:02,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 872 transitions. [2023-08-27 06:44:02,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:02,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 872 transitions. [2023-08-27 06:44:02,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.2) internal successors, (872), 10 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:02,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:02,708 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:02,708 INFO L175 Difference]: Start difference. First operand has 202 places, 670 transitions, 10428 flow. Second operand 10 states and 872 transitions. [2023-08-27 06:44:02,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 831 transitions, 14387 flow [2023-08-27 06:44:03,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 831 transitions, 14240 flow, removed 27 selfloop flow, removed 2 redundant places. [2023-08-27 06:44:03,387 INFO L231 Difference]: Finished difference. Result has 215 places, 722 transitions, 12523 flow [2023-08-27 06:44:03,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=10258, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12523, PETRI_PLACES=215, PETRI_TRANSITIONS=722} [2023-08-27 06:44:03,388 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 186 predicate places. [2023-08-27 06:44:03,388 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 722 transitions, 12523 flow [2023-08-27 06:44:03,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.91666666666667) internal successors, (947), 12 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:03,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:03,389 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] [2023-08-27 06:44:03,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 06:44:03,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:44:03,594 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:03,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:03,594 INFO L85 PathProgramCache]: Analyzing trace with hash -921041164, now seen corresponding path program 3 times [2023-08-27 06:44:03,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:03,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877499215] [2023-08-27 06:44:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:03,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:03,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:03,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877499215] [2023-08-27 06:44:03,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877499215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:44:03,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:44:03,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:44:03,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63018231] [2023-08-27 06:44:03,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:03,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:44:03,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:03,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:44:03,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:44:03,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:03,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 722 transitions, 12523 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:03,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:03,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:03,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:05,279 INFO L124 PetriNetUnfolderBase]: 5715/8325 cut-off events. [2023-08-27 06:44:05,279 INFO L125 PetriNetUnfolderBase]: For 146028/146028 co-relation queries the response was YES. [2023-08-27 06:44:05,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66718 conditions, 8325 events. 5715/8325 cut-off events. For 146028/146028 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 44536 event pairs, 488 based on Foata normal form. 40/8365 useless extension candidates. Maximal degree in co-relation 66196. Up to 2838 conditions per place. [2023-08-27 06:44:05,364 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 497 selfloop transitions, 369 changer transitions 0/866 dead transitions. [2023-08-27 06:44:05,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 866 transitions, 15988 flow [2023-08-27 06:44:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:44:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:44:05,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 876 transitions. [2023-08-27 06:44:05,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610526315789474 [2023-08-27 06:44:05,366 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 876 transitions. [2023-08-27 06:44:05,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 876 transitions. [2023-08-27 06:44:05,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:05,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 876 transitions. [2023-08-27 06:44:05,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 87.6) internal successors, (876), 10 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:05,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:05,369 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:05,370 INFO L175 Difference]: Start difference. First operand has 215 places, 722 transitions, 12523 flow. Second operand 10 states and 876 transitions. [2023-08-27 06:44:05,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 866 transitions, 15988 flow [2023-08-27 06:44:06,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 866 transitions, 15760 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-27 06:44:06,186 INFO L231 Difference]: Finished difference. Result has 227 places, 754 transitions, 14033 flow [2023-08-27 06:44:06,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=12297, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14033, PETRI_PLACES=227, PETRI_TRANSITIONS=754} [2023-08-27 06:44:06,187 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 198 predicate places. [2023-08-27 06:44:06,187 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 754 transitions, 14033 flow [2023-08-27 06:44:06,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:06,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:06,187 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] [2023-08-27 06:44:06,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 06:44:06,188 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:06,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:06,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1775767970, now seen corresponding path program 9 times [2023-08-27 06:44:06,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:06,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345984847] [2023-08-27 06:44:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:06,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:06,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345984847] [2023-08-27 06:44:06,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345984847] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:06,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116102067] [2023-08-27 06:44:06,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:44:06,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:44:06,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:44:06,308 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) [2023-08-27 06:44:06,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 06:44:06,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:44:06,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:44:06,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 06:44:06,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:44:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:06,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:44:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:06,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116102067] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:06,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:44:06,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-27 06:44:06,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661033103] [2023-08-27 06:44:06,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:06,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:44:06,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:44:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:44:06,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 06:44:06,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 754 transitions, 14033 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:06,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:06,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 06:44:06,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:08,317 INFO L124 PetriNetUnfolderBase]: 5693/8308 cut-off events. [2023-08-27 06:44:08,318 INFO L125 PetriNetUnfolderBase]: For 170226/170294 co-relation queries the response was YES. [2023-08-27 06:44:08,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69723 conditions, 8308 events. 5693/8308 cut-off events. For 170226/170294 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 44661 event pairs, 848 based on Foata normal form. 59/8349 useless extension candidates. Maximal degree in co-relation 69173. Up to 4710 conditions per place. [2023-08-27 06:44:08,414 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 676 selfloop transitions, 133 changer transitions 0/827 dead transitions. [2023-08-27 06:44:08,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 827 transitions, 16434 flow [2023-08-27 06:44:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:44:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:44:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2023-08-27 06:44:08,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807017543859649 [2023-08-27 06:44:08,416 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2023-08-27 06:44:08,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2023-08-27 06:44:08,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:08,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2023-08-27 06:44:08,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:08,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:08,419 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:08,419 INFO L175 Difference]: Start difference. First operand has 227 places, 754 transitions, 14033 flow. Second operand 6 states and 548 transitions. [2023-08-27 06:44:08,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 827 transitions, 16434 flow [2023-08-27 06:44:09,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 827 transitions, 16174 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-27 06:44:09,444 INFO L231 Difference]: Finished difference. Result has 232 places, 760 transitions, 14222 flow [2023-08-27 06:44:09,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=13777, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14222, PETRI_PLACES=232, PETRI_TRANSITIONS=760} [2023-08-27 06:44:09,445 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 203 predicate places. [2023-08-27 06:44:09,445 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 760 transitions, 14222 flow [2023-08-27 06:44:09,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:09,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:09,446 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] [2023-08-27 06:44:09,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-27 06:44:09,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-27 06:44:09,651 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:09,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:09,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1990970944, now seen corresponding path program 10 times [2023-08-27 06:44:09,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:09,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592055796] [2023-08-27 06:44:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:09,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:09,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592055796] [2023-08-27 06:44:09,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592055796] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:09,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573005590] [2023-08-27 06:44:09,763 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:44:09,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:44:09,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:44:09,764 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:44:09,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 06:44:09,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:44:09,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:44:09,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 06:44:09,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:44:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:09,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:44:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:10,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573005590] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:10,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:44:10,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-27 06:44:10,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395959646] [2023-08-27 06:44:10,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:10,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:44:10,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:10,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:44:10,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:44:10,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 06:44:10,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 760 transitions, 14222 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:10,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:10,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 06:44:10,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:11,561 INFO L124 PetriNetUnfolderBase]: 5715/8354 cut-off events. [2023-08-27 06:44:11,561 INFO L125 PetriNetUnfolderBase]: For 170142/170210 co-relation queries the response was YES. [2023-08-27 06:44:11,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70868 conditions, 8354 events. 5715/8354 cut-off events. For 170142/170210 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 45115 event pairs, 860 based on Foata normal form. 73/8409 useless extension candidates. Maximal degree in co-relation 70423. Up to 4678 conditions per place. [2023-08-27 06:44:11,642 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 677 selfloop transitions, 139 changer transitions 0/834 dead transitions. [2023-08-27 06:44:11,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 834 transitions, 16648 flow [2023-08-27 06:44:11,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:44:11,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:44:11,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2023-08-27 06:44:11,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-08-27 06:44:11,644 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 550 transitions. [2023-08-27 06:44:11,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 550 transitions. [2023-08-27 06:44:11,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:11,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 550 transitions. [2023-08-27 06:44:11,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:11,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:11,646 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:11,646 INFO L175 Difference]: Start difference. First operand has 232 places, 760 transitions, 14222 flow. Second operand 6 states and 550 transitions. [2023-08-27 06:44:11,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 834 transitions, 16648 flow [2023-08-27 06:44:12,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 834 transitions, 16443 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-27 06:44:12,587 INFO L231 Difference]: Finished difference. Result has 236 places, 763 transitions, 14391 flow [2023-08-27 06:44:12,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=14017, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14391, PETRI_PLACES=236, PETRI_TRANSITIONS=763} [2023-08-27 06:44:12,588 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 207 predicate places. [2023-08-27 06:44:12,588 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 763 transitions, 14391 flow [2023-08-27 06:44:12,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:12,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:12,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:44:12,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 06:44:12,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-27 06:44:12,789 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:12,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:12,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1763514998, now seen corresponding path program 11 times [2023-08-27 06:44:12,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:12,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20914511] [2023-08-27 06:44:12,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:12,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:12,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:12,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20914511] [2023-08-27 06:44:12,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20914511] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:12,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376338009] [2023-08-27 06:44:12,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:44:12,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:44:12,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:44:12,895 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:44:12,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 06:44:12,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:44:12,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:44:12,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 06:44:12,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:44:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:13,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:44:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:13,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376338009] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:13,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:44:13,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2023-08-27 06:44:13,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921424429] [2023-08-27 06:44:13,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:13,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:44:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:44:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:44:13,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 06:44:13,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 763 transitions, 14391 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:13,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:13,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 06:44:13,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:14,699 INFO L124 PetriNetUnfolderBase]: 5679/8298 cut-off events. [2023-08-27 06:44:14,699 INFO L125 PetriNetUnfolderBase]: For 171751/171819 co-relation queries the response was YES. [2023-08-27 06:44:14,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70685 conditions, 8298 events. 5679/8298 cut-off events. For 171751/171819 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 44774 event pairs, 866 based on Foata normal form. 73/8353 useless extension candidates. Maximal degree in co-relation 70239. Up to 4343 conditions per place. [2023-08-27 06:44:14,784 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 665 selfloop transitions, 163 changer transitions 0/846 dead transitions. [2023-08-27 06:44:14,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 846 transitions, 17028 flow [2023-08-27 06:44:14,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:44:14,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:44:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 550 transitions. [2023-08-27 06:44:14,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-08-27 06:44:14,785 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 550 transitions. [2023-08-27 06:44:14,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 550 transitions. [2023-08-27 06:44:14,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:14,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 550 transitions. [2023-08-27 06:44:14,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.66666666666667) internal successors, (550), 6 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:14,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:14,787 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:14,787 INFO L175 Difference]: Start difference. First operand has 236 places, 763 transitions, 14391 flow. Second operand 6 states and 550 transitions. [2023-08-27 06:44:14,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 846 transitions, 17028 flow [2023-08-27 06:44:15,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 846 transitions, 16876 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-27 06:44:15,793 INFO L231 Difference]: Finished difference. Result has 241 places, 770 transitions, 14835 flow [2023-08-27 06:44:15,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=14244, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14835, PETRI_PLACES=241, PETRI_TRANSITIONS=770} [2023-08-27 06:44:15,794 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 212 predicate places. [2023-08-27 06:44:15,794 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 770 transitions, 14835 flow [2023-08-27 06:44:15,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:15,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:15,794 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] [2023-08-27 06:44:15,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-27 06:44:15,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-27 06:44:15,999 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:15,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash 402350888, now seen corresponding path program 4 times [2023-08-27 06:44:15,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:15,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136852726] [2023-08-27 06:44:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:16,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:16,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136852726] [2023-08-27 06:44:16,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136852726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:44:16,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:44:16,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:44:16,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325408519] [2023-08-27 06:44:16,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:16,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:44:16,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:16,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:44:16,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:44:16,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:16,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 770 transitions, 14835 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:16,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:16,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:17,692 INFO L124 PetriNetUnfolderBase]: 5900/8643 cut-off events. [2023-08-27 06:44:17,692 INFO L125 PetriNetUnfolderBase]: For 183331/183331 co-relation queries the response was YES. [2023-08-27 06:44:17,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74878 conditions, 8643 events. 5900/8643 cut-off events. For 183331/183331 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 47045 event pairs, 985 based on Foata normal form. 28/8671 useless extension candidates. Maximal degree in co-relation 74402. Up to 5431 conditions per place. [2023-08-27 06:44:17,780 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 713 selfloop transitions, 169 changer transitions 10/892 dead transitions. [2023-08-27 06:44:17,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 892 transitions, 18154 flow [2023-08-27 06:44:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:44:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:44:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2023-08-27 06:44:17,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2023-08-27 06:44:17,782 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2023-08-27 06:44:17,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2023-08-27 06:44:17,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:17,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2023-08-27 06:44:17,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:17,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:17,784 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:17,784 INFO L175 Difference]: Start difference. First operand has 241 places, 770 transitions, 14835 flow. Second operand 7 states and 609 transitions. [2023-08-27 06:44:17,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 892 transitions, 18154 flow [2023-08-27 06:44:18,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 892 transitions, 17865 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-08-27 06:44:18,840 INFO L231 Difference]: Finished difference. Result has 249 places, 788 transitions, 15455 flow [2023-08-27 06:44:18,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=14546, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15455, PETRI_PLACES=249, PETRI_TRANSITIONS=788} [2023-08-27 06:44:18,840 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 220 predicate places. [2023-08-27 06:44:18,840 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 788 transitions, 15455 flow [2023-08-27 06:44:18,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:18,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:18,841 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] [2023-08-27 06:44:18,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 06:44:18,841 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:18,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:18,841 INFO L85 PathProgramCache]: Analyzing trace with hash 615746262, now seen corresponding path program 12 times [2023-08-27 06:44:18,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:18,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119029932] [2023-08-27 06:44:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:18,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:18,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:18,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119029932] [2023-08-27 06:44:18,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119029932] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:18,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697585198] [2023-08-27 06:44:18,931 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:44:18,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:44:18,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:44:18,932 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:44:18,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 06:44:19,012 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 06:44:19,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:44:19,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 06:44:19,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:44:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:19,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:44:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:19,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697585198] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:19,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:44:19,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 10 [2023-08-27 06:44:19,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625393314] [2023-08-27 06:44:19,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:19,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:44:19,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:19,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:44:19,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-27 06:44:19,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 06:44:19,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 788 transitions, 15455 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:19,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:19,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 06:44:19,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:20,779 INFO L124 PetriNetUnfolderBase]: 5793/8450 cut-off events. [2023-08-27 06:44:20,779 INFO L125 PetriNetUnfolderBase]: For 187797/187865 co-relation queries the response was YES. [2023-08-27 06:44:20,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74285 conditions, 8450 events. 5793/8450 cut-off events. For 187797/187865 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 45662 event pairs, 884 based on Foata normal form. 59/8491 useless extension candidates. Maximal degree in co-relation 73811. Up to 4217 conditions per place. [2023-08-27 06:44:20,872 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 676 selfloop transitions, 166 changer transitions 0/860 dead transitions. [2023-08-27 06:44:20,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 860 transitions, 17908 flow [2023-08-27 06:44:20,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:44:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:44:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 548 transitions. [2023-08-27 06:44:20,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807017543859649 [2023-08-27 06:44:20,874 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 548 transitions. [2023-08-27 06:44:20,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 548 transitions. [2023-08-27 06:44:20,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:20,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 548 transitions. [2023-08-27 06:44:20,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:20,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:20,875 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:20,875 INFO L175 Difference]: Start difference. First operand has 249 places, 788 transitions, 15455 flow. Second operand 6 states and 548 transitions. [2023-08-27 06:44:20,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 860 transitions, 17908 flow [2023-08-27 06:44:22,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 860 transitions, 17634 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-27 06:44:22,095 INFO L231 Difference]: Finished difference. Result has 251 places, 788 transitions, 15523 flow [2023-08-27 06:44:22,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=15181, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=15523, PETRI_PLACES=251, PETRI_TRANSITIONS=788} [2023-08-27 06:44:22,095 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2023-08-27 06:44:22,095 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 788 transitions, 15523 flow [2023-08-27 06:44:22,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:22,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:22,096 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] [2023-08-27 06:44:22,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-27 06:44:22,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-27 06:44:22,300 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:22,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:22,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1797543740, now seen corresponding path program 5 times [2023-08-27 06:44:22,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:22,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277467] [2023-08-27 06:44:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:22,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:22,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:22,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:22,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277467] [2023-08-27 06:44:22,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:44:22,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:44:22,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:44:22,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103356188] [2023-08-27 06:44:22,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:22,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:44:22,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:22,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:44:22,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:44:22,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:22,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 788 transitions, 15523 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:22,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:22,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:22,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:24,095 INFO L124 PetriNetUnfolderBase]: 6225/9164 cut-off events. [2023-08-27 06:44:24,095 INFO L125 PetriNetUnfolderBase]: For 205281/205281 co-relation queries the response was YES. [2023-08-27 06:44:24,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80010 conditions, 9164 events. 6225/9164 cut-off events. For 205281/205281 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 50899 event pairs, 1292 based on Foata normal form. 56/9220 useless extension candidates. Maximal degree in co-relation 79522. Up to 7636 conditions per place. [2023-08-27 06:44:24,196 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 706 selfloop transitions, 193 changer transitions 10/909 dead transitions. [2023-08-27 06:44:24,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 909 transitions, 19164 flow [2023-08-27 06:44:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:44:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:44:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 06:44:24,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 06:44:24,197 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 06:44:24,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 06:44:24,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:24,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 06:44:24,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:24,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:24,199 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:24,199 INFO L175 Difference]: Start difference. First operand has 251 places, 788 transitions, 15523 flow. Second operand 7 states and 600 transitions. [2023-08-27 06:44:24,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 909 transitions, 19164 flow [2023-08-27 06:44:25,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 909 transitions, 18985 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 06:44:25,444 INFO L231 Difference]: Finished difference. Result has 259 places, 832 transitions, 17034 flow [2023-08-27 06:44:25,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=15344, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17034, PETRI_PLACES=259, PETRI_TRANSITIONS=832} [2023-08-27 06:44:25,444 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2023-08-27 06:44:25,444 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 832 transitions, 17034 flow [2023-08-27 06:44:25,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:25,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:25,445 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] [2023-08-27 06:44:25,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 06:44:25,445 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:25,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:25,445 INFO L85 PathProgramCache]: Analyzing trace with hash 841650270, now seen corresponding path program 6 times [2023-08-27 06:44:25,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:25,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593382058] [2023-08-27 06:44:25,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:25,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:25,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:25,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593382058] [2023-08-27 06:44:25,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593382058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:44:25,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:44:25,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:44:25,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749674748] [2023-08-27 06:44:25,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:25,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:44:25,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:25,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:44:25,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:44:25,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:25,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 832 transitions, 17034 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:25,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:25,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:25,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:27,561 INFO L124 PetriNetUnfolderBase]: 6311/9358 cut-off events. [2023-08-27 06:44:27,562 INFO L125 PetriNetUnfolderBase]: For 213905/213905 co-relation queries the response was YES. [2023-08-27 06:44:27,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84251 conditions, 9358 events. 6311/9358 cut-off events. For 213905/213905 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 52841 event pairs, 1411 based on Foata normal form. 36/9394 useless extension candidates. Maximal degree in co-relation 83710. Up to 8204 conditions per place. [2023-08-27 06:44:27,649 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 723 selfloop transitions, 186 changer transitions 9/918 dead transitions. [2023-08-27 06:44:27,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 918 transitions, 20121 flow [2023-08-27 06:44:27,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:44:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:44:27,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2023-08-27 06:44:27,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481203007518797 [2023-08-27 06:44:27,650 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 596 transitions. [2023-08-27 06:44:27,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 596 transitions. [2023-08-27 06:44:27,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:27,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 596 transitions. [2023-08-27 06:44:27,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:27,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:27,652 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:27,652 INFO L175 Difference]: Start difference. First operand has 259 places, 832 transitions, 17034 flow. Second operand 7 states and 596 transitions. [2023-08-27 06:44:27,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 918 transitions, 20121 flow [2023-08-27 06:44:28,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 918 transitions, 19877 flow, removed 122 selfloop flow, removed 1 redundant places. [2023-08-27 06:44:28,837 INFO L231 Difference]: Finished difference. Result has 265 places, 849 transitions, 17677 flow [2023-08-27 06:44:28,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=16794, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17677, PETRI_PLACES=265, PETRI_TRANSITIONS=849} [2023-08-27 06:44:28,838 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 236 predicate places. [2023-08-27 06:44:28,838 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 849 transitions, 17677 flow [2023-08-27 06:44:28,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:28,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:28,838 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] [2023-08-27 06:44:28,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 06:44:28,838 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:28,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:28,839 INFO L85 PathProgramCache]: Analyzing trace with hash 42335346, now seen corresponding path program 7 times [2023-08-27 06:44:28,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:28,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212292045] [2023-08-27 06:44:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:28,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:28,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212292045] [2023-08-27 06:44:28,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212292045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:44:28,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:44:28,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:44:28,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201497446] [2023-08-27 06:44:28,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:28,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:44:28,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:28,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:44:28,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:44:28,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:28,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 849 transitions, 17677 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:28,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:28,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:28,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:30,894 INFO L124 PetriNetUnfolderBase]: 6318/9371 cut-off events. [2023-08-27 06:44:30,894 INFO L125 PetriNetUnfolderBase]: For 212713/212713 co-relation queries the response was YES. [2023-08-27 06:44:30,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84442 conditions, 9371 events. 6318/9371 cut-off events. For 212713/212713 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 52883 event pairs, 1061 based on Foata normal form. 18/9389 useless extension candidates. Maximal degree in co-relation 83998. Up to 5389 conditions per place. [2023-08-27 06:44:30,994 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 728 selfloop transitions, 209 changer transitions 0/937 dead transitions. [2023-08-27 06:44:30,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 937 transitions, 20518 flow [2023-08-27 06:44:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:44:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:44:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 609 transitions. [2023-08-27 06:44:30,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45789473684210524 [2023-08-27 06:44:30,996 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 609 transitions. [2023-08-27 06:44:30,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 609 transitions. [2023-08-27 06:44:30,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:30,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 609 transitions. [2023-08-27 06:44:30,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.0) internal successors, (609), 7 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:30,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:30,997 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:30,997 INFO L175 Difference]: Start difference. First operand has 265 places, 849 transitions, 17677 flow. Second operand 7 states and 609 transitions. [2023-08-27 06:44:30,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 937 transitions, 20518 flow [2023-08-27 06:44:32,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 937 transitions, 20034 flow, removed 59 selfloop flow, removed 4 redundant places. [2023-08-27 06:44:32,330 INFO L231 Difference]: Finished difference. Result has 268 places, 860 transitions, 17930 flow [2023-08-27 06:44:32,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=17195, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17930, PETRI_PLACES=268, PETRI_TRANSITIONS=860} [2023-08-27 06:44:32,330 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2023-08-27 06:44:32,330 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 860 transitions, 17930 flow [2023-08-27 06:44:32,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:32,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:32,331 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] [2023-08-27 06:44:32,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 06:44:32,331 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:32,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1944771611, now seen corresponding path program 1 times [2023-08-27 06:44:32,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:32,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962438233] [2023-08-27 06:44:32,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:32,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:32,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:32,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962438233] [2023-08-27 06:44:32,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962438233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:44:32,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:44:32,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:44:32,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472818298] [2023-08-27 06:44:32,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:32,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:44:32,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:44:32,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:44:32,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:32,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 860 transitions, 17930 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:32,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:32,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:32,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:34,458 INFO L124 PetriNetUnfolderBase]: 6324/9416 cut-off events. [2023-08-27 06:44:34,458 INFO L125 PetriNetUnfolderBase]: For 217853/217853 co-relation queries the response was YES. [2023-08-27 06:44:34,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84978 conditions, 9416 events. 6324/9416 cut-off events. For 217853/217853 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 53586 event pairs, 1149 based on Foata normal form. 24/9440 useless extension candidates. Maximal degree in co-relation 84495. Up to 5389 conditions per place. [2023-08-27 06:44:34,568 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 758 selfloop transitions, 162 changer transitions 18/938 dead transitions. [2023-08-27 06:44:34,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 938 transitions, 20547 flow [2023-08-27 06:44:34,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:44:34,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:44:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 611 transitions. [2023-08-27 06:44:34,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45939849624060153 [2023-08-27 06:44:34,570 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 611 transitions. [2023-08-27 06:44:34,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 611 transitions. [2023-08-27 06:44:34,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:34,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 611 transitions. [2023-08-27 06:44:34,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.28571428571429) internal successors, (611), 7 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:34,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:34,571 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:34,572 INFO L175 Difference]: Start difference. First operand has 268 places, 860 transitions, 17930 flow. Second operand 7 states and 611 transitions. [2023-08-27 06:44:34,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 938 transitions, 20547 flow [2023-08-27 06:44:35,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 938 transitions, 20113 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-08-27 06:44:35,993 INFO L231 Difference]: Finished difference. Result has 272 places, 857 transitions, 17771 flow [2023-08-27 06:44:35,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=17500, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=860, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=698, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17771, PETRI_PLACES=272, PETRI_TRANSITIONS=857} [2023-08-27 06:44:35,994 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 243 predicate places. [2023-08-27 06:44:35,994 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 857 transitions, 17771 flow [2023-08-27 06:44:35,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:35,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:35,994 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] [2023-08-27 06:44:35,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 06:44:35,995 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:35,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:35,995 INFO L85 PathProgramCache]: Analyzing trace with hash 697226670, now seen corresponding path program 13 times [2023-08-27 06:44:35,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:35,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829344357] [2023-08-27 06:44:35,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:35,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:36,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:36,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829344357] [2023-08-27 06:44:36,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829344357] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:44:36,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010167440] [2023-08-27 06:44:36,082 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:44:36,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:44:36,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:44:36,083 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:44:36,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-27 06:44:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:36,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 06:44:36,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:44:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:36,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:44:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:36,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010167440] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:44:36,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:44:36,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2023-08-27 06:44:36,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207791473] [2023-08-27 06:44:36,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:44:36,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 06:44:36,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:36,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 06:44:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2023-08-27 06:44:36,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:36,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 857 transitions, 17771 flow. Second operand has 16 states, 16 states have (on average 78.5) internal successors, (1256), 16 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:36,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:36,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:36,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:39,203 INFO L124 PetriNetUnfolderBase]: 7725/11238 cut-off events. [2023-08-27 06:44:39,203 INFO L125 PetriNetUnfolderBase]: For 266539/266539 co-relation queries the response was YES. [2023-08-27 06:44:39,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102554 conditions, 11238 events. 7725/11238 cut-off events. For 266539/266539 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 63374 event pairs, 1276 based on Foata normal form. 26/11264 useless extension candidates. Maximal degree in co-relation 102215. Up to 8823 conditions per place. [2023-08-27 06:44:39,339 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 873 selfloop transitions, 431 changer transitions 0/1304 dead transitions. [2023-08-27 06:44:39,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 1304 transitions, 27860 flow [2023-08-27 06:44:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-27 06:44:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-27 06:44:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1783 transitions. [2023-08-27 06:44:39,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468671679197995 [2023-08-27 06:44:39,341 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1783 transitions. [2023-08-27 06:44:39,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1783 transitions. [2023-08-27 06:44:39,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:39,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1783 transitions. [2023-08-27 06:44:39,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 84.9047619047619) internal successors, (1783), 21 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:39,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 190.0) internal successors, (4180), 22 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:39,345 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 190.0) internal successors, (4180), 22 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:39,345 INFO L175 Difference]: Start difference. First operand has 272 places, 857 transitions, 17771 flow. Second operand 21 states and 1783 transitions. [2023-08-27 06:44:39,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 1304 transitions, 27860 flow [2023-08-27 06:44:41,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 1304 transitions, 27504 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-27 06:44:41,238 INFO L231 Difference]: Finished difference. Result has 294 places, 1087 transitions, 23630 flow [2023-08-27 06:44:41,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=17437, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=23630, PETRI_PLACES=294, PETRI_TRANSITIONS=1087} [2023-08-27 06:44:41,239 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 265 predicate places. [2023-08-27 06:44:41,239 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 1087 transitions, 23630 flow [2023-08-27 06:44:41,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 78.5) internal successors, (1256), 16 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:41,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:41,239 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] [2023-08-27 06:44:41,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-27 06:44:41,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-27 06:44:41,440 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:41,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:41,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1256816458, now seen corresponding path program 14 times [2023-08-27 06:44:41,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:41,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562628333] [2023-08-27 06:44:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:41,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:41,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:41,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562628333] [2023-08-27 06:44:41,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562628333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:44:41,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:44:41,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:44:41,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177448355] [2023-08-27 06:44:41,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:41,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:44:41,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:41,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:44:41,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:44:41,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:41,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 1087 transitions, 23630 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:41,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:41,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:41,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:44,467 INFO L124 PetriNetUnfolderBase]: 7765/11310 cut-off events. [2023-08-27 06:44:44,468 INFO L125 PetriNetUnfolderBase]: For 288151/288151 co-relation queries the response was YES. [2023-08-27 06:44:44,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107786 conditions, 11310 events. 7765/11310 cut-off events. For 288151/288151 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63782 event pairs, 1525 based on Foata normal form. 16/11326 useless extension candidates. Maximal degree in co-relation 107315. Up to 9886 conditions per place. [2023-08-27 06:44:44,610 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 918 selfloop transitions, 232 changer transitions 0/1150 dead transitions. [2023-08-27 06:44:44,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 1150 transitions, 26712 flow [2023-08-27 06:44:44,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:44:44,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:44:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 607 transitions. [2023-08-27 06:44:44,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456390977443609 [2023-08-27 06:44:44,612 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 607 transitions. [2023-08-27 06:44:44,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 607 transitions. [2023-08-27 06:44:44,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:44,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 607 transitions. [2023-08-27 06:44:44,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:44,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:44,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:44,614 INFO L175 Difference]: Start difference. First operand has 294 places, 1087 transitions, 23630 flow. Second operand 7 states and 607 transitions. [2023-08-27 06:44:44,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 1150 transitions, 26712 flow [2023-08-27 06:44:47,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 1150 transitions, 25702 flow, removed 411 selfloop flow, removed 2 redundant places. [2023-08-27 06:44:47,060 INFO L231 Difference]: Finished difference. Result has 299 places, 1091 transitions, 23229 flow [2023-08-27 06:44:47,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=22620, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1087, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23229, PETRI_PLACES=299, PETRI_TRANSITIONS=1091} [2023-08-27 06:44:47,061 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 270 predicate places. [2023-08-27 06:44:47,061 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 1091 transitions, 23229 flow [2023-08-27 06:44:47,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:47,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:47,061 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] [2023-08-27 06:44:47,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 06:44:47,061 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:47,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:47,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1871647724, now seen corresponding path program 15 times [2023-08-27 06:44:47,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:47,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175992478] [2023-08-27 06:44:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:47,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:47,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:47,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175992478] [2023-08-27 06:44:47,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175992478] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:44:47,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:44:47,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:44:47,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939220813] [2023-08-27 06:44:47,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:47,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:44:47,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:47,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:44:47,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:44:47,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:47,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 1091 transitions, 23229 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:47,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:47,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:47,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:50,349 INFO L124 PetriNetUnfolderBase]: 7766/11313 cut-off events. [2023-08-27 06:44:50,350 INFO L125 PetriNetUnfolderBase]: For 280295/280295 co-relation queries the response was YES. [2023-08-27 06:44:50,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105467 conditions, 11313 events. 7766/11313 cut-off events. For 280295/280295 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63795 event pairs, 1590 based on Foata normal form. 2/11315 useless extension candidates. Maximal degree in co-relation 104995. Up to 10314 conditions per place. [2023-08-27 06:44:50,469 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 917 selfloop transitions, 203 changer transitions 3/1123 dead transitions. [2023-08-27 06:44:50,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 1123 transitions, 25865 flow [2023-08-27 06:44:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:44:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:44:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 06:44:50,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 06:44:50,471 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 06:44:50,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 06:44:50,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:50,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 06:44:50,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:50,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:50,473 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:50,473 INFO L175 Difference]: Start difference. First operand has 299 places, 1091 transitions, 23229 flow. Second operand 7 states and 590 transitions. [2023-08-27 06:44:50,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 1123 transitions, 25865 flow [2023-08-27 06:44:52,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1123 transitions, 25391 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-27 06:44:52,335 INFO L231 Difference]: Finished difference. Result has 302 places, 1097 transitions, 23379 flow [2023-08-27 06:44:52,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=22769, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=890, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23379, PETRI_PLACES=302, PETRI_TRANSITIONS=1097} [2023-08-27 06:44:52,336 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 273 predicate places. [2023-08-27 06:44:52,336 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 1097 transitions, 23379 flow [2023-08-27 06:44:52,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:52,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:52,336 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] [2023-08-27 06:44:52,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 06:44:52,336 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:52,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:52,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1698282134, now seen corresponding path program 16 times [2023-08-27 06:44:52,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:52,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988425138] [2023-08-27 06:44:52,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:52,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:52,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:52,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988425138] [2023-08-27 06:44:52,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988425138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:44:52,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:44:52,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:44:52,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459884005] [2023-08-27 06:44:52,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:52,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:44:52,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:52,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:44:52,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:44:52,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:52,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 1097 transitions, 23379 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:52,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:52,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:52,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:44:55,268 INFO L124 PetriNetUnfolderBase]: 7769/11318 cut-off events. [2023-08-27 06:44:55,268 INFO L125 PetriNetUnfolderBase]: For 277529/277529 co-relation queries the response was YES. [2023-08-27 06:44:55,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105487 conditions, 11318 events. 7769/11318 cut-off events. For 277529/277529 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 63828 event pairs, 1589 based on Foata normal form. 2/11320 useless extension candidates. Maximal degree in co-relation 105013. Up to 10316 conditions per place. [2023-08-27 06:44:55,389 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 936 selfloop transitions, 203 changer transitions 3/1142 dead transitions. [2023-08-27 06:44:55,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 1142 transitions, 26198 flow [2023-08-27 06:44:55,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:44:55,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:44:55,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2023-08-27 06:44:55,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2023-08-27 06:44:55,390 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2023-08-27 06:44:55,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2023-08-27 06:44:55,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:44:55,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2023-08-27 06:44:55,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:55,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:55,392 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:55,392 INFO L175 Difference]: Start difference. First operand has 302 places, 1097 transitions, 23379 flow. Second operand 7 states and 588 transitions. [2023-08-27 06:44:55,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 1142 transitions, 26198 flow [2023-08-27 06:44:57,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 1142 transitions, 25760 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-27 06:44:57,253 INFO L231 Difference]: Finished difference. Result has 306 places, 1101 transitions, 23487 flow [2023-08-27 06:44:57,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=22945, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1097, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=895, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23487, PETRI_PLACES=306, PETRI_TRANSITIONS=1101} [2023-08-27 06:44:57,253 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 277 predicate places. [2023-08-27 06:44:57,253 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 1101 transitions, 23487 flow [2023-08-27 06:44:57,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:57,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:44:57,254 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] [2023-08-27 06:44:57,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 06:44:57,254 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:44:57,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:44:57,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1022357110, now seen corresponding path program 17 times [2023-08-27 06:44:57,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:44:57,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936317957] [2023-08-27 06:44:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:44:57,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:44:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:44:57,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:44:57,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:44:57,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936317957] [2023-08-27 06:44:57,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936317957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:44:57,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:44:57,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:44:57,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27539286] [2023-08-27 06:44:57,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:44:57,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:44:57,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:44:57,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:44:57,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:44:57,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:44:57,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 1101 transitions, 23487 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:44:57,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:44:57,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:44:57,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:45:00,321 INFO L124 PetriNetUnfolderBase]: 7776/11331 cut-off events. [2023-08-27 06:45:00,321 INFO L125 PetriNetUnfolderBase]: For 275698/275698 co-relation queries the response was YES. [2023-08-27 06:45:00,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105685 conditions, 11331 events. 7776/11331 cut-off events. For 275698/275698 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 64003 event pairs, 1595 based on Foata normal form. 8/11339 useless extension candidates. Maximal degree in co-relation 105209. Up to 10320 conditions per place. [2023-08-27 06:45:00,441 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 946 selfloop transitions, 195 changer transitions 1/1142 dead transitions. [2023-08-27 06:45:00,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1142 transitions, 26241 flow [2023-08-27 06:45:00,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:45:00,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:45:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 06:45:00,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 06:45:00,442 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 06:45:00,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 06:45:00,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:45:00,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 06:45:00,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:00,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:00,444 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:00,444 INFO L175 Difference]: Start difference. First operand has 306 places, 1101 transitions, 23487 flow. Second operand 7 states and 598 transitions. [2023-08-27 06:45:00,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1142 transitions, 26241 flow [2023-08-27 06:45:02,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 1142 transitions, 25819 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 06:45:02,334 INFO L231 Difference]: Finished difference. Result has 309 places, 1108 transitions, 23643 flow [2023-08-27 06:45:02,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23079, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=911, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23643, PETRI_PLACES=309, PETRI_TRANSITIONS=1108} [2023-08-27 06:45:02,334 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 280 predicate places. [2023-08-27 06:45:02,334 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 1108 transitions, 23643 flow [2023-08-27 06:45:02,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:02,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:45:02,335 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] [2023-08-27 06:45:02,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 06:45:02,335 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:45:02,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:45:02,335 INFO L85 PathProgramCache]: Analyzing trace with hash -976852294, now seen corresponding path program 18 times [2023-08-27 06:45:02,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:45:02,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133402561] [2023-08-27 06:45:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:45:02,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:45:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:45:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:02,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:45:02,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133402561] [2023-08-27 06:45:02,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133402561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:45:02,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:45:02,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:45:02,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007071255] [2023-08-27 06:45:02,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:45:02,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:45:02,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:45:02,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:45:02,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:45:02,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:45:02,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 1108 transitions, 23643 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:02,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:45:02,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:45:02,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:45:05,326 INFO L124 PetriNetUnfolderBase]: 7779/11331 cut-off events. [2023-08-27 06:45:05,326 INFO L125 PetriNetUnfolderBase]: For 279766/279766 co-relation queries the response was YES. [2023-08-27 06:45:05,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105767 conditions, 11331 events. 7779/11331 cut-off events. For 279766/279766 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 63890 event pairs, 1598 based on Foata normal form. 2/11333 useless extension candidates. Maximal degree in co-relation 105289. Up to 10326 conditions per place. [2023-08-27 06:45:05,546 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 934 selfloop transitions, 197 changer transitions 2/1133 dead transitions. [2023-08-27 06:45:05,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1133 transitions, 26171 flow [2023-08-27 06:45:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:45:05,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:45:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 06:45:05,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 06:45:05,548 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 06:45:05,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 06:45:05,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:45:05,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 06:45:05,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:05,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:05,549 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:05,549 INFO L175 Difference]: Start difference. First operand has 309 places, 1108 transitions, 23643 flow. Second operand 7 states and 590 transitions. [2023-08-27 06:45:05,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1133 transitions, 26171 flow [2023-08-27 06:45:07,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 1133 transitions, 25942 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-27 06:45:07,427 INFO L231 Difference]: Finished difference. Result has 313 places, 1110 transitions, 23871 flow [2023-08-27 06:45:07,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23418, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=913, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=23871, PETRI_PLACES=313, PETRI_TRANSITIONS=1110} [2023-08-27 06:45:07,428 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 284 predicate places. [2023-08-27 06:45:07,428 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 1110 transitions, 23871 flow [2023-08-27 06:45:07,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:07,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:45:07,428 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] [2023-08-27 06:45:07,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 06:45:07,428 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:45:07,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:45:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1615237636, now seen corresponding path program 19 times [2023-08-27 06:45:07,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:45:07,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678699491] [2023-08-27 06:45:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:45:07,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:45:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:45:07,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:07,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:45:07,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678699491] [2023-08-27 06:45:07,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678699491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:45:07,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:45:07,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:45:07,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420690689] [2023-08-27 06:45:07,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:45:07,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:45:07,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:45:07,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:45:07,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:45:07,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:45:07,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 1110 transitions, 23871 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:07,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:45:07,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:45:07,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:45:10,444 INFO L124 PetriNetUnfolderBase]: 7802/11370 cut-off events. [2023-08-27 06:45:10,444 INFO L125 PetriNetUnfolderBase]: For 284218/284218 co-relation queries the response was YES. [2023-08-27 06:45:10,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106183 conditions, 11370 events. 7802/11370 cut-off events. For 284218/284218 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 64295 event pairs, 1594 based on Foata normal form. 18/11388 useless extension candidates. Maximal degree in co-relation 105705. Up to 10314 conditions per place. [2023-08-27 06:45:10,572 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 942 selfloop transitions, 209 changer transitions 0/1151 dead transitions. [2023-08-27 06:45:10,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1151 transitions, 26638 flow [2023-08-27 06:45:10,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:45:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:45:10,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 06:45:10,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 06:45:10,574 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 06:45:10,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 06:45:10,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:45:10,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 06:45:10,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:10,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:10,575 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:10,576 INFO L175 Difference]: Start difference. First operand has 313 places, 1110 transitions, 23871 flow. Second operand 7 states and 600 transitions. [2023-08-27 06:45:10,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 1151 transitions, 26638 flow [2023-08-27 06:45:12,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 1151 transitions, 26249 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 06:45:12,596 INFO L231 Difference]: Finished difference. Result has 317 places, 1116 transitions, 24055 flow [2023-08-27 06:45:12,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23482, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=901, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24055, PETRI_PLACES=317, PETRI_TRANSITIONS=1116} [2023-08-27 06:45:12,597 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 288 predicate places. [2023-08-27 06:45:12,597 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 1116 transitions, 24055 flow [2023-08-27 06:45:12,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:12,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:45:12,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:45:12,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 06:45:12,597 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:45:12,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:45:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1024150510, now seen corresponding path program 20 times [2023-08-27 06:45:12,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:45:12,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141025691] [2023-08-27 06:45:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:45:12,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:45:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:45:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:12,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:45:12,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141025691] [2023-08-27 06:45:12,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141025691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:45:12,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:45:12,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:45:12,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915849558] [2023-08-27 06:45:12,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:45:12,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:45:12,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:45:12,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:45:12,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:45:12,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:45:12,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 1116 transitions, 24055 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:12,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:45:12,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:45:12,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:45:15,663 INFO L124 PetriNetUnfolderBase]: 7818/11398 cut-off events. [2023-08-27 06:45:15,664 INFO L125 PetriNetUnfolderBase]: For 288318/288318 co-relation queries the response was YES. [2023-08-27 06:45:15,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106641 conditions, 11398 events. 7818/11398 cut-off events. For 288318/288318 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 64557 event pairs, 1606 based on Foata normal form. 12/11410 useless extension candidates. Maximal degree in co-relation 106161. Up to 10378 conditions per place. [2023-08-27 06:45:15,788 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 947 selfloop transitions, 200 changer transitions 0/1147 dead transitions. [2023-08-27 06:45:15,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 1147 transitions, 26659 flow [2023-08-27 06:45:15,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:45:15,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:45:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 594 transitions. [2023-08-27 06:45:15,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44661654135338347 [2023-08-27 06:45:15,789 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 594 transitions. [2023-08-27 06:45:15,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 594 transitions. [2023-08-27 06:45:15,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:45:15,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 594 transitions. [2023-08-27 06:45:15,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:15,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:15,791 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:15,791 INFO L175 Difference]: Start difference. First operand has 317 places, 1116 transitions, 24055 flow. Second operand 7 states and 594 transitions. [2023-08-27 06:45:15,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 1147 transitions, 26659 flow [2023-08-27 06:45:17,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 1147 transitions, 26251 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 06:45:17,746 INFO L231 Difference]: Finished difference. Result has 320 places, 1119 transitions, 24128 flow [2023-08-27 06:45:17,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23647, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=916, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24128, PETRI_PLACES=320, PETRI_TRANSITIONS=1119} [2023-08-27 06:45:17,748 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 291 predicate places. [2023-08-27 06:45:17,748 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 1119 transitions, 24128 flow [2023-08-27 06:45:17,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:17,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:45:17,749 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] [2023-08-27 06:45:17,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 06:45:17,749 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:45:17,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:45:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash -486260694, now seen corresponding path program 21 times [2023-08-27 06:45:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:45:17,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755278861] [2023-08-27 06:45:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:45:17,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:45:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:45:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:45:17,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755278861] [2023-08-27 06:45:17,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755278861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:45:17,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:45:17,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:45:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535903629] [2023-08-27 06:45:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:45:17,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:45:17,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:45:17,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:45:17,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:45:17,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:45:17,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 1119 transitions, 24128 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:17,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:45:17,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:45:17,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:45:20,750 INFO L124 PetriNetUnfolderBase]: 7828/11416 cut-off events. [2023-08-27 06:45:20,751 INFO L125 PetriNetUnfolderBase]: For 289673/289673 co-relation queries the response was YES. [2023-08-27 06:45:20,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106846 conditions, 11416 events. 7828/11416 cut-off events. For 289673/289673 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 64728 event pairs, 1608 based on Foata normal form. 8/11424 useless extension candidates. Maximal degree in co-relation 106365. Up to 10402 conditions per place. [2023-08-27 06:45:20,881 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 949 selfloop transitions, 199 changer transitions 0/1148 dead transitions. [2023-08-27 06:45:20,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 1148 transitions, 26689 flow [2023-08-27 06:45:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:45:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:45:20,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 597 transitions. [2023-08-27 06:45:20,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488721804511278 [2023-08-27 06:45:20,883 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 597 transitions. [2023-08-27 06:45:20,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 597 transitions. [2023-08-27 06:45:20,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:45:20,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 597 transitions. [2023-08-27 06:45:20,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:20,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:20,884 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:20,884 INFO L175 Difference]: Start difference. First operand has 320 places, 1119 transitions, 24128 flow. Second operand 7 states and 597 transitions. [2023-08-27 06:45:20,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 1148 transitions, 26689 flow [2023-08-27 06:45:22,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 1148 transitions, 26285 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-27 06:45:22,882 INFO L231 Difference]: Finished difference. Result has 322 places, 1120 transitions, 24153 flow [2023-08-27 06:45:22,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23724, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=920, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=24153, PETRI_PLACES=322, PETRI_TRANSITIONS=1120} [2023-08-27 06:45:22,883 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 293 predicate places. [2023-08-27 06:45:22,883 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 1120 transitions, 24153 flow [2023-08-27 06:45:22,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:22,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:45:22,883 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] [2023-08-27 06:45:22,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 06:45:22,883 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:45:22,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:45:22,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1826476000, now seen corresponding path program 22 times [2023-08-27 06:45:22,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:45:22,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074805413] [2023-08-27 06:45:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:45:22,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:45:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:45:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:22,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:45:22,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074805413] [2023-08-27 06:45:22,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074805413] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:45:22,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661210379] [2023-08-27 06:45:22,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:45:22,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:45:22,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:45:22,969 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:45:22,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-27 06:45:23,057 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:45:23,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:45:23,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 06:45:23,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:45:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:23,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:45:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:23,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661210379] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:45:23,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:45:23,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-08-27 06:45:23,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211343800] [2023-08-27 06:45:23,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:45:23,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-27 06:45:23,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:45:23,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-27 06:45:23,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-08-27 06:45:23,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 190 [2023-08-27 06:45:23,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 1120 transitions, 24153 flow. Second operand has 19 states, 19 states have (on average 75.21052631578948) internal successors, (1429), 19 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:23,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:45:23,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 190 [2023-08-27 06:45:23,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:45:28,159 INFO L124 PetriNetUnfolderBase]: 10059/14877 cut-off events. [2023-08-27 06:45:28,159 INFO L125 PetriNetUnfolderBase]: For 376717/376717 co-relation queries the response was YES. [2023-08-27 06:45:28,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139471 conditions, 14877 events. 10059/14877 cut-off events. For 376717/376717 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 90710 event pairs, 551 based on Foata normal form. 80/14957 useless extension candidates. Maximal degree in co-relation 139004. Up to 5517 conditions per place. [2023-08-27 06:45:28,356 INFO L140 encePairwiseOnDemand]: 180/190 looper letters, 970 selfloop transitions, 1024 changer transitions 1/1995 dead transitions. [2023-08-27 06:45:28,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1995 transitions, 42882 flow [2023-08-27 06:45:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-27 06:45:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-27 06:45:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3369 transitions. [2023-08-27 06:45:28,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324775353016688 [2023-08-27 06:45:28,360 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3369 transitions. [2023-08-27 06:45:28,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3369 transitions. [2023-08-27 06:45:28,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:45:28,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3369 transitions. [2023-08-27 06:45:28,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 82.17073170731707) internal successors, (3369), 41 states have internal predecessors, (3369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:28,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 190.0) internal successors, (7980), 42 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:28,368 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 190.0) internal successors, (7980), 42 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:28,368 INFO L175 Difference]: Start difference. First operand has 322 places, 1120 transitions, 24153 flow. Second operand 41 states and 3369 transitions. [2023-08-27 06:45:28,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1995 transitions, 42882 flow [2023-08-27 06:45:31,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1995 transitions, 42431 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-27 06:45:31,668 INFO L231 Difference]: Finished difference. Result has 381 places, 1498 transitions, 35977 flow [2023-08-27 06:45:31,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=23669, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=685, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=35977, PETRI_PLACES=381, PETRI_TRANSITIONS=1498} [2023-08-27 06:45:31,669 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 352 predicate places. [2023-08-27 06:45:31,669 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1498 transitions, 35977 flow [2023-08-27 06:45:31,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 75.21052631578948) internal successors, (1429), 19 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:31,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:45:31,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:45:31,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-27 06:45:31,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-27 06:45:31,874 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:45:31,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:45:31,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1329227984, now seen corresponding path program 23 times [2023-08-27 06:45:31,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:45:31,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700145655] [2023-08-27 06:45:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:45:31,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:45:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:45:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:31,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:45:31,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700145655] [2023-08-27 06:45:31,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700145655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:45:31,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:45:31,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:45:31,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961612371] [2023-08-27 06:45:31,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:45:31,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:45:31,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:45:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:45:31,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:45:31,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:45:31,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1498 transitions, 35977 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:31,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:45:31,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:45:31,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:45:36,790 INFO L124 PetriNetUnfolderBase]: 10056/14870 cut-off events. [2023-08-27 06:45:36,791 INFO L125 PetriNetUnfolderBase]: For 479780/479780 co-relation queries the response was YES. [2023-08-27 06:45:36,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151702 conditions, 14870 events. 10056/14870 cut-off events. For 479780/479780 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 90522 event pairs, 2072 based on Foata normal form. 2/14872 useless extension candidates. Maximal degree in co-relation 151174. Up to 13790 conditions per place. [2023-08-27 06:45:37,000 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1294 selfloop transitions, 224 changer transitions 2/1520 dead transitions. [2023-08-27 06:45:37,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1520 transitions, 39215 flow [2023-08-27 06:45:37,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:45:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:45:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2023-08-27 06:45:37,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2023-08-27 06:45:37,001 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2023-08-27 06:45:37,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2023-08-27 06:45:37,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:45:37,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2023-08-27 06:45:37,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:37,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:37,003 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:37,003 INFO L175 Difference]: Start difference. First operand has 381 places, 1498 transitions, 35977 flow. Second operand 7 states and 588 transitions. [2023-08-27 06:45:37,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1520 transitions, 39215 flow [2023-08-27 06:45:41,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 1520 transitions, 37344 flow, removed 608 selfloop flow, removed 4 redundant places. [2023-08-27 06:45:41,692 INFO L231 Difference]: Finished difference. Result has 384 places, 1498 transitions, 34553 flow [2023-08-27 06:45:41,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34069, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34553, PETRI_PLACES=384, PETRI_TRANSITIONS=1498} [2023-08-27 06:45:41,693 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 355 predicate places. [2023-08-27 06:45:41,693 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 1498 transitions, 34553 flow [2023-08-27 06:45:41,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:41,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:45:41,694 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] [2023-08-27 06:45:41,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 06:45:41,694 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:45:41,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:45:41,694 INFO L85 PathProgramCache]: Analyzing trace with hash -595682358, now seen corresponding path program 24 times [2023-08-27 06:45:41,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:45:41,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190178133] [2023-08-27 06:45:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:45:41,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:45:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:45:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:41,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:45:41,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190178133] [2023-08-27 06:45:41,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190178133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:45:41,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:45:41,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:45:41,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699250757] [2023-08-27 06:45:41,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:45:41,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:45:41,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:45:41,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:45:41,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:45:41,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:45:41,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1498 transitions, 34553 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:41,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:45:41,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:45:41,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:45:46,632 INFO L124 PetriNetUnfolderBase]: 10071/14895 cut-off events. [2023-08-27 06:45:46,632 INFO L125 PetriNetUnfolderBase]: For 458319/458319 co-relation queries the response was YES. [2023-08-27 06:45:46,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147416 conditions, 14895 events. 10071/14895 cut-off events. For 458319/458319 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 90716 event pairs, 2069 based on Foata normal form. 12/14907 useless extension candidates. Maximal degree in co-relation 146888. Up to 13800 conditions per place. [2023-08-27 06:45:46,824 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1316 selfloop transitions, 225 changer transitions 0/1541 dead transitions. [2023-08-27 06:45:46,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1541 transitions, 38122 flow [2023-08-27 06:45:46,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:45:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:45:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 591 transitions. [2023-08-27 06:45:46,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443609022556391 [2023-08-27 06:45:46,825 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 591 transitions. [2023-08-27 06:45:46,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 591 transitions. [2023-08-27 06:45:46,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:45:46,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 591 transitions. [2023-08-27 06:45:46,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.42857142857143) internal successors, (591), 7 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:46,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:46,826 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:46,827 INFO L175 Difference]: Start difference. First operand has 384 places, 1498 transitions, 34553 flow. Second operand 7 states and 591 transitions. [2023-08-27 06:45:46,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1541 transitions, 38122 flow [2023-08-27 06:45:51,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 1541 transitions, 37858 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 06:45:51,720 INFO L231 Difference]: Finished difference. Result has 387 places, 1501 transitions, 34835 flow [2023-08-27 06:45:51,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34289, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34835, PETRI_PLACES=387, PETRI_TRANSITIONS=1501} [2023-08-27 06:45:51,721 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 358 predicate places. [2023-08-27 06:45:51,721 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 1501 transitions, 34835 flow [2023-08-27 06:45:51,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:51,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:45:51,721 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] [2023-08-27 06:45:51,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 06:45:51,722 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:45:51,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:45:51,722 INFO L85 PathProgramCache]: Analyzing trace with hash 671774820, now seen corresponding path program 25 times [2023-08-27 06:45:51,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:45:51,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867754170] [2023-08-27 06:45:51,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:45:51,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:45:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:45:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:45:51,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:45:51,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867754170] [2023-08-27 06:45:51,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867754170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:45:51,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:45:51,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:45:51,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426612930] [2023-08-27 06:45:51,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:45:51,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:45:51,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:45:51,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:45:51,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:45:51,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:45:51,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 1501 transitions, 34835 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:51,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:45:51,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:45:51,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:45:56,660 INFO L124 PetriNetUnfolderBase]: 10087/14923 cut-off events. [2023-08-27 06:45:56,660 INFO L125 PetriNetUnfolderBase]: For 469837/469837 co-relation queries the response was YES. [2023-08-27 06:45:56,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147993 conditions, 14923 events. 10087/14923 cut-off events. For 469837/469837 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 91005 event pairs, 2076 based on Foata normal form. 12/14935 useless extension candidates. Maximal degree in co-relation 147464. Up to 13828 conditions per place. [2023-08-27 06:45:56,857 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1304 selfloop transitions, 227 changer transitions 0/1531 dead transitions. [2023-08-27 06:45:56,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1531 transitions, 38243 flow [2023-08-27 06:45:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:45:56,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:45:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2023-08-27 06:45:56,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44511278195488724 [2023-08-27 06:45:56,859 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2023-08-27 06:45:56,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2023-08-27 06:45:56,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:45:56,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2023-08-27 06:45:56,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:56,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:56,860 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:45:56,860 INFO L175 Difference]: Start difference. First operand has 387 places, 1501 transitions, 34835 flow. Second operand 7 states and 592 transitions. [2023-08-27 06:45:56,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1531 transitions, 38243 flow [2023-08-27 06:46:01,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 1531 transitions, 37783 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-27 06:46:01,733 INFO L231 Difference]: Finished difference. Result has 389 places, 1504 transitions, 34931 flow [2023-08-27 06:46:01,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34375, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34931, PETRI_PLACES=389, PETRI_TRANSITIONS=1504} [2023-08-27 06:46:01,734 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 360 predicate places. [2023-08-27 06:46:01,735 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 1504 transitions, 34931 flow [2023-08-27 06:46:01,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:01,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:46:01,735 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] [2023-08-27 06:46:01,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 06:46:01,735 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:46:01,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:46:01,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1154295143, now seen corresponding path program 2 times [2023-08-27 06:46:01,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:46:01,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366644538] [2023-08-27 06:46:01,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:46:01,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:46:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:46:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:46:01,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:46:01,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366644538] [2023-08-27 06:46:01,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366644538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:46:01,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:46:01,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:46:01,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554197707] [2023-08-27 06:46:01,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:46:01,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:46:01,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:46:01,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:46:01,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:46:01,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:46:01,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 1504 transitions, 34931 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:01,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:46:01,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:46:01,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:46:06,761 INFO L124 PetriNetUnfolderBase]: 10101/15004 cut-off events. [2023-08-27 06:46:06,761 INFO L125 PetriNetUnfolderBase]: For 473234/473234 co-relation queries the response was YES. [2023-08-27 06:46:07,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148459 conditions, 15004 events. 10101/15004 cut-off events. For 473234/473234 co-relation queries the response was YES. Maximal size of possible extension queue 887. Compared 92415 event pairs, 2063 based on Foata normal form. 36/15040 useless extension candidates. Maximal degree in co-relation 147929. Up to 13710 conditions per place. [2023-08-27 06:46:07,077 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1327 selfloop transitions, 217 changer transitions 11/1555 dead transitions. [2023-08-27 06:46:07,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 1555 transitions, 38617 flow [2023-08-27 06:46:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:46:07,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:46:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-27 06:46:07,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548872180451128 [2023-08-27 06:46:07,078 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-27 06:46:07,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-27 06:46:07,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:46:07,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-27 06:46:07,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:07,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:07,080 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:07,080 INFO L175 Difference]: Start difference. First operand has 389 places, 1504 transitions, 34931 flow. Second operand 7 states and 605 transitions. [2023-08-27 06:46:07,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 1555 transitions, 38617 flow [2023-08-27 06:46:11,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1555 transitions, 38147 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-08-27 06:46:11,908 INFO L231 Difference]: Finished difference. Result has 393 places, 1506 transitions, 34982 flow [2023-08-27 06:46:11,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34461, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34982, PETRI_PLACES=393, PETRI_TRANSITIONS=1506} [2023-08-27 06:46:11,909 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 364 predicate places. [2023-08-27 06:46:11,909 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 1506 transitions, 34982 flow [2023-08-27 06:46:11,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:11,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:46:11,909 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] [2023-08-27 06:46:11,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 06:46:11,910 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:46:11,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:46:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash -595960386, now seen corresponding path program 8 times [2023-08-27 06:46:11,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:46:11,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079910447] [2023-08-27 06:46:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:46:11,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:46:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:46:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:46:11,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:46:11,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079910447] [2023-08-27 06:46:11,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079910447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:46:11,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:46:11,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:46:11,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507122192] [2023-08-27 06:46:11,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:46:11,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:46:11,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:46:11,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:46:11,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:46:11,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:46:11,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 1506 transitions, 34982 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:11,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:46:11,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:46:11,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:46:17,145 INFO L124 PetriNetUnfolderBase]: 10440/15550 cut-off events. [2023-08-27 06:46:17,145 INFO L125 PetriNetUnfolderBase]: For 484980/484980 co-relation queries the response was YES. [2023-08-27 06:46:17,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153349 conditions, 15550 events. 10440/15550 cut-off events. For 484980/484980 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 96496 event pairs, 1623 based on Foata normal form. 14/15564 useless extension candidates. Maximal degree in co-relation 152996. Up to 8234 conditions per place. [2023-08-27 06:46:17,357 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1033 selfloop transitions, 576 changer transitions 0/1609 dead transitions. [2023-08-27 06:46:17,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1609 transitions, 39802 flow [2023-08-27 06:46:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 06:46:17,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 06:46:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 864 transitions. [2023-08-27 06:46:17,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45473684210526316 [2023-08-27 06:46:17,359 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 864 transitions. [2023-08-27 06:46:17,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 864 transitions. [2023-08-27 06:46:17,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:46:17,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 864 transitions. [2023-08-27 06:46:17,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 86.4) internal successors, (864), 10 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:17,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:17,361 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 190.0) internal successors, (2090), 11 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:17,361 INFO L175 Difference]: Start difference. First operand has 393 places, 1506 transitions, 34982 flow. Second operand 10 states and 864 transitions. [2023-08-27 06:46:17,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1609 transitions, 39802 flow [2023-08-27 06:46:22,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 1609 transitions, 39315 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-08-27 06:46:22,737 INFO L231 Difference]: Finished difference. Result has 394 places, 1532 transitions, 37204 flow [2023-08-27 06:46:22,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=34473, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=947, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=37204, PETRI_PLACES=394, PETRI_TRANSITIONS=1532} [2023-08-27 06:46:22,738 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 365 predicate places. [2023-08-27 06:46:22,738 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 1532 transitions, 37204 flow [2023-08-27 06:46:22,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:22,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:46:22,739 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] [2023-08-27 06:46:22,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-27 06:46:22,739 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:46:22,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:46:22,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1265429916, now seen corresponding path program 9 times [2023-08-27 06:46:22,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:46:22,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189042137] [2023-08-27 06:46:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:46:22,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:46:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:46:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:46:22,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:46:22,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189042137] [2023-08-27 06:46:22,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189042137] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:46:22,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928937342] [2023-08-27 06:46:22,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:46:22,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:46:22,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:46:22,816 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:46:22,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-27 06:46:22,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:46:22,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:46:22,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 06:46:22,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:46:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:46:23,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:46:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:46:23,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928937342] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:46:23,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:46:23,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-08-27 06:46:23,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428870517] [2023-08-27 06:46:23,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:46:23,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-27 06:46:23,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:46:23,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-27 06:46:23,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-08-27 06:46:23,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 190 [2023-08-27 06:46:23,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1532 transitions, 37204 flow. Second operand has 20 states, 20 states have (on average 75.25) internal successors, (1505), 20 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:23,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:46:23,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 190 [2023-08-27 06:46:23,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:46:29,494 INFO L124 PetriNetUnfolderBase]: 11485/16959 cut-off events. [2023-08-27 06:46:29,494 INFO L125 PetriNetUnfolderBase]: For 598417/598417 co-relation queries the response was YES. [2023-08-27 06:46:29,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172710 conditions, 16959 events. 11485/16959 cut-off events. For 598417/598417 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 105218 event pairs, 1755 based on Foata normal form. 108/17067 useless extension candidates. Maximal degree in co-relation 171959. Up to 9241 conditions per place. [2023-08-27 06:46:29,723 INFO L140 encePairwiseOnDemand]: 180/190 looper letters, 961 selfloop transitions, 957 changer transitions 0/1918 dead transitions. [2023-08-27 06:46:29,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1918 transitions, 47931 flow [2023-08-27 06:46:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-27 06:46:29,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-27 06:46:29,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2286 transitions. [2023-08-27 06:46:29,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42969924812030075 [2023-08-27 06:46:29,725 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2286 transitions. [2023-08-27 06:46:29,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2286 transitions. [2023-08-27 06:46:29,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:46:29,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2286 transitions. [2023-08-27 06:46:29,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 81.64285714285714) internal successors, (2286), 28 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:29,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:29,730 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:29,730 INFO L175 Difference]: Start difference. First operand has 394 places, 1532 transitions, 37204 flow. Second operand 28 states and 2286 transitions. [2023-08-27 06:46:29,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1918 transitions, 47931 flow [2023-08-27 06:46:36,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1918 transitions, 47931 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 06:46:36,196 INFO L231 Difference]: Finished difference. Result has 437 places, 1725 transitions, 44778 flow [2023-08-27 06:46:36,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=37204, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=775, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=44778, PETRI_PLACES=437, PETRI_TRANSITIONS=1725} [2023-08-27 06:46:36,197 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 408 predicate places. [2023-08-27 06:46:36,198 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 1725 transitions, 44778 flow [2023-08-27 06:46:36,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 75.25) internal successors, (1505), 20 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:36,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:46:36,198 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] [2023-08-27 06:46:36,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-27 06:46:36,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:46:36,398 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:46:36,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:46:36,399 INFO L85 PathProgramCache]: Analyzing trace with hash -483232915, now seen corresponding path program 3 times [2023-08-27 06:46:36,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:46:36,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872642138] [2023-08-27 06:46:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:46:36,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:46:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:46:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:46:36,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:46:36,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872642138] [2023-08-27 06:46:36,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872642138] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:46:36,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:46:36,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:46:36,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755331877] [2023-08-27 06:46:36,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:46:36,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:46:36,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:46:36,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:46:36,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:46:36,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:46:36,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1725 transitions, 44778 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:36,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:46:36,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:46:36,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:46:42,919 INFO L124 PetriNetUnfolderBase]: 11513/17003 cut-off events. [2023-08-27 06:46:42,919 INFO L125 PetriNetUnfolderBase]: For 657393/657393 co-relation queries the response was YES. [2023-08-27 06:46:43,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183316 conditions, 17003 events. 11513/17003 cut-off events. For 657393/657393 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 105368 event pairs, 2349 based on Foata normal form. 16/17019 useless extension candidates. Maximal degree in co-relation 182520. Up to 15682 conditions per place. [2023-08-27 06:46:43,286 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1505 selfloop transitions, 259 changer transitions 0/1764 dead transitions. [2023-08-27 06:46:43,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1764 transitions, 48800 flow [2023-08-27 06:46:43,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:46:43,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:46:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2023-08-27 06:46:43,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45037593984962404 [2023-08-27 06:46:43,287 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2023-08-27 06:46:43,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2023-08-27 06:46:43,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:46:43,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2023-08-27 06:46:43,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:43,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:43,289 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:43,289 INFO L175 Difference]: Start difference. First operand has 437 places, 1725 transitions, 44778 flow. Second operand 7 states and 599 transitions. [2023-08-27 06:46:43,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1764 transitions, 48800 flow [2023-08-27 06:46:51,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1764 transitions, 47060 flow, removed 565 selfloop flow, removed 7 redundant places. [2023-08-27 06:46:51,145 INFO L231 Difference]: Finished difference. Result has 438 places, 1732 transitions, 43792 flow [2023-08-27 06:46:51,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43038, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43792, PETRI_PLACES=438, PETRI_TRANSITIONS=1732} [2023-08-27 06:46:51,146 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 409 predicate places. [2023-08-27 06:46:51,147 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 1732 transitions, 43792 flow [2023-08-27 06:46:51,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:51,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:46:51,147 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] [2023-08-27 06:46:51,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-27 06:46:51,147 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:46:51,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:46:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash -167278109, now seen corresponding path program 4 times [2023-08-27 06:46:51,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:46:51,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093559640] [2023-08-27 06:46:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:46:51,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:46:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:46:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:46:51,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:46:51,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093559640] [2023-08-27 06:46:51,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093559640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:46:51,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:46:51,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:46:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222178190] [2023-08-27 06:46:51,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:46:51,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:46:51,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:46:51,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:46:51,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:46:51,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:46:51,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 1732 transitions, 43792 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:51,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:46:51,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:46:51,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:46:57,606 INFO L124 PetriNetUnfolderBase]: 11527/17084 cut-off events. [2023-08-27 06:46:57,606 INFO L125 PetriNetUnfolderBase]: For 621799/621799 co-relation queries the response was YES. [2023-08-27 06:46:57,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178609 conditions, 17084 events. 11527/17084 cut-off events. For 621799/621799 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 106685 event pairs, 2395 based on Foata normal form. 36/17120 useless extension candidates. Maximal degree in co-relation 177811. Up to 15782 conditions per place. [2023-08-27 06:46:57,860 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1524 selfloop transitions, 237 changer transitions 14/1775 dead transitions. [2023-08-27 06:46:57,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 1775 transitions, 47721 flow [2023-08-27 06:46:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:46:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:46:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-08-27 06:46:57,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45338345864661656 [2023-08-27 06:46:57,861 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-08-27 06:46:57,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-08-27 06:46:57,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:46:57,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-08-27 06:46:57,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:57,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:57,862 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:46:57,863 INFO L175 Difference]: Start difference. First operand has 438 places, 1732 transitions, 43792 flow. Second operand 7 states and 603 transitions. [2023-08-27 06:46:57,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 1775 transitions, 47721 flow [2023-08-27 06:47:05,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1775 transitions, 46881 flow, removed 167 selfloop flow, removed 4 redundant places. [2023-08-27 06:47:05,348 INFO L231 Difference]: Finished difference. Result has 442 places, 1727 transitions, 43318 flow [2023-08-27 06:47:05,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=42952, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43318, PETRI_PLACES=442, PETRI_TRANSITIONS=1727} [2023-08-27 06:47:05,349 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 413 predicate places. [2023-08-27 06:47:05,349 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 1727 transitions, 43318 flow [2023-08-27 06:47:05,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:05,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:47:05,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:47:05,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-27 06:47:05,349 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:47:05,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:47:05,350 INFO L85 PathProgramCache]: Analyzing trace with hash 280465283, now seen corresponding path program 5 times [2023-08-27 06:47:05,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:47:05,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236782447] [2023-08-27 06:47:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:47:05,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:47:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:47:05,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:05,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:47:05,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236782447] [2023-08-27 06:47:05,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236782447] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:47:05,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634422293] [2023-08-27 06:47:05,425 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:47:05,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:47:05,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:47:05,426 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:47:05,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-27 06:47:05,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:47:05,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:47:05,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 06:47:05,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:47:05,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:05,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:47:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:05,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634422293] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:47:05,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:47:05,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-27 06:47:05,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595799401] [2023-08-27 06:47:05,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:47:05,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 06:47:05,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:47:05,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 06:47:05,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-27 06:47:05,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:47:05,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 1727 transitions, 43318 flow. Second operand has 12 states, 12 states have (on average 78.25) internal successors, (939), 12 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:05,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:47:05,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:47:05,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:47:12,012 INFO L124 PetriNetUnfolderBase]: 11513/17035 cut-off events. [2023-08-27 06:47:12,012 INFO L125 PetriNetUnfolderBase]: For 607239/607239 co-relation queries the response was YES. [2023-08-27 06:47:12,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177246 conditions, 17035 events. 11513/17035 cut-off events. For 607239/607239 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 105921 event pairs, 2395 based on Foata normal form. 4/17039 useless extension candidates. Maximal degree in co-relation 176795. Up to 15830 conditions per place. [2023-08-27 06:47:12,266 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1512 selfloop transitions, 245 changer transitions 0/1757 dead transitions. [2023-08-27 06:47:12,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1757 transitions, 47163 flow [2023-08-27 06:47:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:47:12,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:47:12,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 593 transitions. [2023-08-27 06:47:12,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44586466165413535 [2023-08-27 06:47:12,267 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 593 transitions. [2023-08-27 06:47:12,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 593 transitions. [2023-08-27 06:47:12,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:47:12,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 593 transitions. [2023-08-27 06:47:12,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.71428571428571) internal successors, (593), 7 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:12,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:12,268 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:12,268 INFO L175 Difference]: Start difference. First operand has 442 places, 1727 transitions, 43318 flow. Second operand 7 states and 593 transitions. [2023-08-27 06:47:12,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 1757 transitions, 47163 flow [2023-08-27 06:47:19,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1757 transitions, 46883 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-27 06:47:19,425 INFO L231 Difference]: Finished difference. Result has 444 places, 1730 transitions, 43611 flow [2023-08-27 06:47:19,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43040, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43611, PETRI_PLACES=444, PETRI_TRANSITIONS=1730} [2023-08-27 06:47:19,426 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 415 predicate places. [2023-08-27 06:47:19,426 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 1730 transitions, 43611 flow [2023-08-27 06:47:19,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 78.25) internal successors, (939), 12 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:19,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:47:19,426 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] [2023-08-27 06:47:19,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-27 06:47:19,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-27 06:47:19,633 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:47:19,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:47:19,633 INFO L85 PathProgramCache]: Analyzing trace with hash -516251336, now seen corresponding path program 10 times [2023-08-27 06:47:19,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:47:19,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297788722] [2023-08-27 06:47:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:47:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:47:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:47:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:19,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:47:19,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297788722] [2023-08-27 06:47:19,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297788722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:47:19,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:47:19,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:47:19,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532194803] [2023-08-27 06:47:19,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:47:19,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:47:19,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:47:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:47:19,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:47:19,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:47:19,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1730 transitions, 43611 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:19,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:47:19,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:47:19,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:47:26,200 INFO L124 PetriNetUnfolderBase]: 11566/17114 cut-off events. [2023-08-27 06:47:26,200 INFO L125 PetriNetUnfolderBase]: For 623745/623745 co-relation queries the response was YES. [2023-08-27 06:47:26,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178358 conditions, 17114 events. 11566/17114 cut-off events. For 623745/623745 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 106566 event pairs, 2402 based on Foata normal form. 24/17138 useless extension candidates. Maximal degree in co-relation 177580. Up to 15839 conditions per place. [2023-08-27 06:47:26,452 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1518 selfloop transitions, 255 changer transitions 0/1773 dead transitions. [2023-08-27 06:47:26,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 1773 transitions, 47828 flow [2023-08-27 06:47:26,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:47:26,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:47:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 06:47:26,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 06:47:26,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 06:47:26,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 06:47:26,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:47:26,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 06:47:26,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:26,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:26,455 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:26,455 INFO L175 Difference]: Start difference. First operand has 444 places, 1730 transitions, 43611 flow. Second operand 7 states and 600 transitions. [2023-08-27 06:47:26,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 1773 transitions, 47828 flow [2023-08-27 06:47:33,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 1773 transitions, 47124 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-27 06:47:33,708 INFO L231 Difference]: Finished difference. Result has 446 places, 1742 transitions, 43799 flow [2023-08-27 06:47:33,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=42925, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=43799, PETRI_PLACES=446, PETRI_TRANSITIONS=1742} [2023-08-27 06:47:33,709 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 417 predicate places. [2023-08-27 06:47:33,709 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 1742 transitions, 43799 flow [2023-08-27 06:47:33,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:33,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:47:33,709 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] [2023-08-27 06:47:33,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-27 06:47:33,709 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:47:33,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:47:33,709 INFO L85 PathProgramCache]: Analyzing trace with hash 128564496, now seen corresponding path program 11 times [2023-08-27 06:47:33,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:47:33,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234456441] [2023-08-27 06:47:33,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:47:33,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:47:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:47:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:33,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:47:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234456441] [2023-08-27 06:47:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234456441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:47:33,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:47:33,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:47:33,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204371591] [2023-08-27 06:47:33,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:47:33,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:47:33,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:47:33,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:47:33,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:47:33,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:47:33,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 1742 transitions, 43799 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:33,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:47:33,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:47:33,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:47:40,258 INFO L124 PetriNetUnfolderBase]: 11593/17155 cut-off events. [2023-08-27 06:47:40,258 INFO L125 PetriNetUnfolderBase]: For 614059/614059 co-relation queries the response was YES. [2023-08-27 06:47:40,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178968 conditions, 17155 events. 11593/17155 cut-off events. For 614059/614059 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 106874 event pairs, 2410 based on Foata normal form. 14/17169 useless extension candidates. Maximal degree in co-relation 178188. Up to 15895 conditions per place. [2023-08-27 06:47:40,519 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1523 selfloop transitions, 251 changer transitions 0/1774 dead transitions. [2023-08-27 06:47:40,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1774 transitions, 47689 flow [2023-08-27 06:47:40,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:47:40,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:47:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 06:47:40,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 06:47:40,520 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 06:47:40,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 06:47:40,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:47:40,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 06:47:40,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:40,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:40,522 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:40,522 INFO L175 Difference]: Start difference. First operand has 446 places, 1742 transitions, 43799 flow. Second operand 7 states and 598 transitions. [2023-08-27 06:47:40,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1774 transitions, 47689 flow [2023-08-27 06:47:47,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 1774 transitions, 47403 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-27 06:47:47,753 INFO L231 Difference]: Finished difference. Result has 450 places, 1744 transitions, 44096 flow [2023-08-27 06:47:47,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43513, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=44096, PETRI_PLACES=450, PETRI_TRANSITIONS=1744} [2023-08-27 06:47:47,754 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 421 predicate places. [2023-08-27 06:47:47,754 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 1744 transitions, 44096 flow [2023-08-27 06:47:47,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:47,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:47:47,754 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] [2023-08-27 06:47:47,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-27 06:47:47,754 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:47:47,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:47:47,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2061475308, now seen corresponding path program 12 times [2023-08-27 06:47:47,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:47:47,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679239255] [2023-08-27 06:47:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:47:47,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:47:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:47:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:47:47,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:47:47,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679239255] [2023-08-27 06:47:47,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679239255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:47:47,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:47:47,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:47:47,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985934655] [2023-08-27 06:47:47,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:47:47,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:47:47,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:47:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:47:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:47:47,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:47:47,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 1744 transitions, 44096 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:47,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:47:47,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:47:47,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:47:54,463 INFO L124 PetriNetUnfolderBase]: 11605/17175 cut-off events. [2023-08-27 06:47:54,463 INFO L125 PetriNetUnfolderBase]: For 628789/628789 co-relation queries the response was YES. [2023-08-27 06:47:54,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179413 conditions, 17175 events. 11605/17175 cut-off events. For 628789/628789 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 107078 event pairs, 2424 based on Foata normal form. 8/17183 useless extension candidates. Maximal degree in co-relation 178632. Up to 15939 conditions per place. [2023-08-27 06:47:54,715 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1521 selfloop transitions, 250 changer transitions 0/1771 dead transitions. [2023-08-27 06:47:54,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 1771 transitions, 47976 flow [2023-08-27 06:47:54,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:47:54,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:47:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 592 transitions. [2023-08-27 06:47:54,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44511278195488724 [2023-08-27 06:47:54,716 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 592 transitions. [2023-08-27 06:47:54,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 592 transitions. [2023-08-27 06:47:54,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:47:54,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 592 transitions. [2023-08-27 06:47:54,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.57142857142857) internal successors, (592), 7 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:54,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:54,717 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:47:54,717 INFO L175 Difference]: Start difference. First operand has 450 places, 1744 transitions, 44096 flow. Second operand 7 states and 592 transitions. [2023-08-27 06:47:54,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 1771 transitions, 47976 flow [2023-08-27 06:48:02,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1771 transitions, 47466 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 06:48:02,036 INFO L231 Difference]: Finished difference. Result has 452 places, 1747 transitions, 44177 flow [2023-08-27 06:48:02,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43592, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=44177, PETRI_PLACES=452, PETRI_TRANSITIONS=1747} [2023-08-27 06:48:02,037 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 423 predicate places. [2023-08-27 06:48:02,037 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 1747 transitions, 44177 flow [2023-08-27 06:48:02,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:02,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:48:02,037 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] [2023-08-27 06:48:02,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-27 06:48:02,037 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:48:02,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:48:02,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1573679163, now seen corresponding path program 6 times [2023-08-27 06:48:02,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:48:02,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211043052] [2023-08-27 06:48:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:48:02,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:48:02,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:48:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:02,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:48:02,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211043052] [2023-08-27 06:48:02,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211043052] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:48:02,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556719926] [2023-08-27 06:48:02,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-27 06:48:02,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:48:02,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:48:02,121 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:48:02,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-27 06:48:02,221 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-27 06:48:02,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:48:02,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-27 06:48:02,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:48:02,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:02,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:48:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:02,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556719926] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:48:02,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:48:02,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2023-08-27 06:48:02,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042537534] [2023-08-27 06:48:02,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:48:02,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-27 06:48:02,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:48:02,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-27 06:48:02,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-08-27 06:48:02,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:48:02,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1747 transitions, 44177 flow. Second operand has 14 states, 14 states have (on average 78.14285714285714) internal successors, (1094), 14 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:02,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:48:02,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:48:02,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:48:09,142 INFO L124 PetriNetUnfolderBase]: 11675/17287 cut-off events. [2023-08-27 06:48:09,143 INFO L125 PetriNetUnfolderBase]: For 629267/629267 co-relation queries the response was YES. [2023-08-27 06:48:09,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180486 conditions, 17287 events. 11675/17287 cut-off events. For 629267/629267 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 107984 event pairs, 2420 based on Foata normal form. 4/17291 useless extension candidates. Maximal degree in co-relation 179705. Up to 15967 conditions per place. [2023-08-27 06:48:09,409 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1532 selfloop transitions, 263 changer transitions 0/1795 dead transitions. [2023-08-27 06:48:09,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 1795 transitions, 48399 flow [2023-08-27 06:48:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 06:48:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 06:48:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 763 transitions. [2023-08-27 06:48:09,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461988304093567 [2023-08-27 06:48:09,411 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 763 transitions. [2023-08-27 06:48:09,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 763 transitions. [2023-08-27 06:48:09,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:48:09,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 763 transitions. [2023-08-27 06:48:09,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.77777777777777) internal successors, (763), 9 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:09,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 190.0) internal successors, (1900), 10 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:09,413 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 190.0) internal successors, (1900), 10 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:09,413 INFO L175 Difference]: Start difference. First operand has 452 places, 1747 transitions, 44177 flow. Second operand 9 states and 763 transitions. [2023-08-27 06:48:09,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 1795 transitions, 48399 flow [2023-08-27 06:48:16,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1795 transitions, 48116 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 06:48:16,922 INFO L231 Difference]: Finished difference. Result has 458 places, 1758 transitions, 44755 flow [2023-08-27 06:48:16,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=43902, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=44755, PETRI_PLACES=458, PETRI_TRANSITIONS=1758} [2023-08-27 06:48:16,923 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 429 predicate places. [2023-08-27 06:48:16,923 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 1758 transitions, 44755 flow [2023-08-27 06:48:16,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 78.14285714285714) internal successors, (1094), 14 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:16,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:48:16,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:48:16,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-27 06:48:17,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-08-27 06:48:17,124 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:48:17,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:48:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1476022069, now seen corresponding path program 7 times [2023-08-27 06:48:17,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:48:17,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956602653] [2023-08-27 06:48:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:48:17,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:48:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:48:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:17,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:48:17,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956602653] [2023-08-27 06:48:17,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956602653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:48:17,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15324049] [2023-08-27 06:48:17,201 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-27 06:48:17,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:48:17,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:48:17,202 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:48:17,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-27 06:48:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:48:17,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 06:48:17,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:48:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:17,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:48:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:17,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15324049] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:48:17,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:48:17,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-27 06:48:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239198431] [2023-08-27 06:48:17,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:48:17,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 06:48:17,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:48:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 06:48:17,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-08-27 06:48:17,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:48:17,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 1758 transitions, 44755 flow. Second operand has 13 states, 13 states have (on average 78.46153846153847) internal successors, (1020), 13 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:17,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:48:17,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:48:17,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:48:24,185 INFO L124 PetriNetUnfolderBase]: 11663/17261 cut-off events. [2023-08-27 06:48:24,185 INFO L125 PetriNetUnfolderBase]: For 641156/641156 co-relation queries the response was YES. [2023-08-27 06:48:24,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180681 conditions, 17261 events. 11663/17261 cut-off events. For 641156/641156 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 107705 event pairs, 2426 based on Foata normal form. 8/17269 useless extension candidates. Maximal degree in co-relation 179898. Up to 15967 conditions per place. [2023-08-27 06:48:24,454 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1524 selfloop transitions, 262 changer transitions 0/1786 dead transitions. [2023-08-27 06:48:24,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 1786 transitions, 48627 flow [2023-08-27 06:48:24,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:48:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:48:24,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 678 transitions. [2023-08-27 06:48:24,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44605263157894737 [2023-08-27 06:48:24,458 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 678 transitions. [2023-08-27 06:48:24,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 678 transitions. [2023-08-27 06:48:24,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:48:24,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 678 transitions. [2023-08-27 06:48:24,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.75) internal successors, (678), 8 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:24,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 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) [2023-08-27 06:48:24,460 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 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) [2023-08-27 06:48:24,460 INFO L175 Difference]: Start difference. First operand has 458 places, 1758 transitions, 44755 flow. Second operand 8 states and 678 transitions. [2023-08-27 06:48:24,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 1786 transitions, 48627 flow [2023-08-27 06:48:32,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1786 transitions, 48381 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 06:48:32,129 INFO L231 Difference]: Finished difference. Result has 462 places, 1757 transitions, 45008 flow [2023-08-27 06:48:32,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44484, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=45008, PETRI_PLACES=462, PETRI_TRANSITIONS=1757} [2023-08-27 06:48:32,131 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 433 predicate places. [2023-08-27 06:48:32,131 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1757 transitions, 45008 flow [2023-08-27 06:48:32,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 78.46153846153847) internal successors, (1020), 13 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:32,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:48:32,131 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] [2023-08-27 06:48:32,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-27 06:48:32,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:48:32,331 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:48:32,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:48:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash 877664846, now seen corresponding path program 13 times [2023-08-27 06:48:32,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:48:32,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937858210] [2023-08-27 06:48:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:48:32,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:48:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:48:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:32,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:48:32,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937858210] [2023-08-27 06:48:32,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937858210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:48:32,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:48:32,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:48:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607922710] [2023-08-27 06:48:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:48:32,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:48:32,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:48:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:48:32,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:48:32,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:48:32,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1757 transitions, 45008 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:32,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:48:32,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:48:32,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:48:38,946 INFO L124 PetriNetUnfolderBase]: 11592/17126 cut-off events. [2023-08-27 06:48:38,946 INFO L125 PetriNetUnfolderBase]: For 647515/647515 co-relation queries the response was YES. [2023-08-27 06:48:39,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179742 conditions, 17126 events. 11592/17126 cut-off events. For 647515/647515 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 106321 event pairs, 2213 based on Foata normal form. 58/17184 useless extension candidates. Maximal degree in co-relation 179139. Up to 15295 conditions per place. [2023-08-27 06:48:39,206 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1469 selfloop transitions, 337 changer transitions 0/1806 dead transitions. [2023-08-27 06:48:39,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1806 transitions, 49118 flow [2023-08-27 06:48:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:48:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:48:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2023-08-27 06:48:39,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45037593984962404 [2023-08-27 06:48:39,208 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2023-08-27 06:48:39,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2023-08-27 06:48:39,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:48:39,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2023-08-27 06:48:39,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:39,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:39,209 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:39,209 INFO L175 Difference]: Start difference. First operand has 462 places, 1757 transitions, 45008 flow. Second operand 7 states and 599 transitions. [2023-08-27 06:48:39,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1806 transitions, 49118 flow [2023-08-27 06:48:46,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1806 transitions, 48582 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-27 06:48:46,872 INFO L231 Difference]: Finished difference. Result has 462 places, 1763 transitions, 45326 flow [2023-08-27 06:48:46,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44480, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=331, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45326, PETRI_PLACES=462, PETRI_TRANSITIONS=1763} [2023-08-27 06:48:46,873 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 433 predicate places. [2023-08-27 06:48:46,873 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1763 transitions, 45326 flow [2023-08-27 06:48:46,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:46,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:48:46,873 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] [2023-08-27 06:48:46,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-27 06:48:46,873 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:48:46,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:48:46,873 INFO L85 PathProgramCache]: Analyzing trace with hash 441642440, now seen corresponding path program 14 times [2023-08-27 06:48:46,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:48:46,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123937271] [2023-08-27 06:48:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:48:46,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:48:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:48:46,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:48:46,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:48:46,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123937271] [2023-08-27 06:48:46,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123937271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:48:46,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:48:46,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:48:46,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39579906] [2023-08-27 06:48:46,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:48:46,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:48:46,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:48:46,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:48:46,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:48:46,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:48:46,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1763 transitions, 45326 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:46,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:48:46,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:48:46,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:48:53,563 INFO L124 PetriNetUnfolderBase]: 11593/17103 cut-off events. [2023-08-27 06:48:53,563 INFO L125 PetriNetUnfolderBase]: For 654288/654288 co-relation queries the response was YES. [2023-08-27 06:48:53,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180350 conditions, 17103 events. 11593/17103 cut-off events. For 654288/654288 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 105869 event pairs, 2348 based on Foata normal form. 14/17117 useless extension candidates. Maximal degree in co-relation 179746. Up to 15817 conditions per place. [2023-08-27 06:48:53,827 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1509 selfloop transitions, 294 changer transitions 0/1803 dead transitions. [2023-08-27 06:48:53,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1803 transitions, 49361 flow [2023-08-27 06:48:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:48:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:48:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2023-08-27 06:48:53,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2023-08-27 06:48:53,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2023-08-27 06:48:53,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2023-08-27 06:48:53,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:48:53,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2023-08-27 06:48:53,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:53,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:53,829 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:48:53,829 INFO L175 Difference]: Start difference. First operand has 462 places, 1763 transitions, 45326 flow. Second operand 7 states and 588 transitions. [2023-08-27 06:48:53,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1803 transitions, 49361 flow [2023-08-27 06:49:01,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1803 transitions, 48642 flow, removed 32 selfloop flow, removed 6 redundant places. [2023-08-27 06:49:01,404 INFO L231 Difference]: Finished difference. Result has 462 places, 1769 transitions, 45345 flow [2023-08-27 06:49:01,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44470, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=45345, PETRI_PLACES=462, PETRI_TRANSITIONS=1769} [2023-08-27 06:49:01,405 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 433 predicate places. [2023-08-27 06:49:01,405 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1769 transitions, 45345 flow [2023-08-27 06:49:01,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:01,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:49:01,405 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] [2023-08-27 06:49:01,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-27 06:49:01,405 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:49:01,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:49:01,406 INFO L85 PathProgramCache]: Analyzing trace with hash -868627026, now seen corresponding path program 15 times [2023-08-27 06:49:01,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:49:01,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032940197] [2023-08-27 06:49:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:49:01,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:49:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:49:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:49:01,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:49:01,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032940197] [2023-08-27 06:49:01,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032940197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:49:01,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:49:01,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:49:01,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503900903] [2023-08-27 06:49:01,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:49:01,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:49:01,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:49:01,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:49:01,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:49:01,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:49:01,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1769 transitions, 45345 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:01,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:49:01,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:49:01,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:49:08,091 INFO L124 PetriNetUnfolderBase]: 11671/17181 cut-off events. [2023-08-27 06:49:08,091 INFO L125 PetriNetUnfolderBase]: For 656413/656413 co-relation queries the response was YES. [2023-08-27 06:49:08,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181597 conditions, 17181 events. 11671/17181 cut-off events. For 656413/656413 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 105941 event pairs, 2298 based on Foata normal form. 60/17241 useless extension candidates. Maximal degree in co-relation 181096. Up to 15528 conditions per place. [2023-08-27 06:49:08,349 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1500 selfloop transitions, 326 changer transitions 0/1826 dead transitions. [2023-08-27 06:49:08,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1826 transitions, 49990 flow [2023-08-27 06:49:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:49:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:49:08,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 06:49:08,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 06:49:08,350 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 06:49:08,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 06:49:08,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:49:08,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 06:49:08,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:08,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:08,351 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:08,351 INFO L175 Difference]: Start difference. First operand has 462 places, 1769 transitions, 45345 flow. Second operand 7 states and 598 transitions. [2023-08-27 06:49:08,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1826 transitions, 49990 flow [2023-08-27 06:49:16,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 1826 transitions, 49386 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-27 06:49:16,160 INFO L231 Difference]: Finished difference. Result has 465 places, 1790 transitions, 46158 flow [2023-08-27 06:49:16,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=44747, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=46158, PETRI_PLACES=465, PETRI_TRANSITIONS=1790} [2023-08-27 06:49:16,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 436 predicate places. [2023-08-27 06:49:16,161 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 1790 transitions, 46158 flow [2023-08-27 06:49:16,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:16,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:49:16,161 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] [2023-08-27 06:49:16,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-27 06:49:16,162 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:49:16,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:49:16,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1968589468, now seen corresponding path program 26 times [2023-08-27 06:49:16,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:49:16,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594095742] [2023-08-27 06:49:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:49:16,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:49:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:49:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:49:16,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:49:16,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594095742] [2023-08-27 06:49:16,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594095742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:49:16,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:49:16,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:49:16,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315276714] [2023-08-27 06:49:16,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:49:16,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:49:16,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:49:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:49:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:49:16,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:49:16,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 1790 transitions, 46158 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:16,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:49:16,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:49:16,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:49:22,782 INFO L124 PetriNetUnfolderBase]: 11619/17069 cut-off events. [2023-08-27 06:49:22,782 INFO L125 PetriNetUnfolderBase]: For 661327/661327 co-relation queries the response was YES. [2023-08-27 06:49:22,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181297 conditions, 17069 events. 11619/17069 cut-off events. For 661327/661327 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 104986 event pairs, 2199 based on Foata normal form. 40/17109 useless extension candidates. Maximal degree in co-relation 180782. Up to 14941 conditions per place. [2023-08-27 06:49:23,046 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1498 selfloop transitions, 386 changer transitions 0/1884 dead transitions. [2023-08-27 06:49:23,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 1884 transitions, 51270 flow [2023-08-27 06:49:23,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:49:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:49:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-08-27 06:49:23,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45338345864661656 [2023-08-27 06:49:23,048 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-08-27 06:49:23,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-08-27 06:49:23,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:49:23,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-08-27 06:49:23,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:23,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:23,049 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:23,049 INFO L175 Difference]: Start difference. First operand has 465 places, 1790 transitions, 46158 flow. Second operand 7 states and 603 transitions. [2023-08-27 06:49:23,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 1884 transitions, 51270 flow [2023-08-27 06:49:30,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1884 transitions, 50744 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-08-27 06:49:30,620 INFO L231 Difference]: Finished difference. Result has 471 places, 1795 transitions, 46721 flow [2023-08-27 06:49:30,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=45613, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=46721, PETRI_PLACES=471, PETRI_TRANSITIONS=1795} [2023-08-27 06:49:30,621 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 442 predicate places. [2023-08-27 06:49:30,621 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 1795 transitions, 46721 flow [2023-08-27 06:49:30,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:30,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:49:30,621 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] [2023-08-27 06:49:30,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-27 06:49:30,621 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:49:30,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:49:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1259520142, now seen corresponding path program 27 times [2023-08-27 06:49:30,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:49:30,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033100849] [2023-08-27 06:49:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:49:30,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:49:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:49:30,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:49:30,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:49:30,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033100849] [2023-08-27 06:49:30,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033100849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:49:30,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:49:30,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:49:30,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879251348] [2023-08-27 06:49:30,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:49:30,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:49:30,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:49:30,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:49:30,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:49:30,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:49:30,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1795 transitions, 46721 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:30,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:49:30,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:49:30,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:49:37,373 INFO L124 PetriNetUnfolderBase]: 11597/17047 cut-off events. [2023-08-27 06:49:37,373 INFO L125 PetriNetUnfolderBase]: For 668031/668031 co-relation queries the response was YES. [2023-08-27 06:49:37,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181982 conditions, 17047 events. 11597/17047 cut-off events. For 668031/668031 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 104972 event pairs, 2312 based on Foata normal form. 22/17069 useless extension candidates. Maximal degree in co-relation 181474. Up to 15662 conditions per place. [2023-08-27 06:49:37,641 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1519 selfloop transitions, 312 changer transitions 0/1831 dead transitions. [2023-08-27 06:49:37,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1831 transitions, 50851 flow [2023-08-27 06:49:37,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:49:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:49:37,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-08-27 06:49:37,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-08-27 06:49:37,645 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-08-27 06:49:37,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-08-27 06:49:37,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:49:37,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-08-27 06:49:37,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:37,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:37,647 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:37,647 INFO L175 Difference]: Start difference. First operand has 471 places, 1795 transitions, 46721 flow. Second operand 7 states and 598 transitions. [2023-08-27 06:49:37,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 1831 transitions, 50851 flow [2023-08-27 06:49:45,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 1831 transitions, 50179 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-27 06:49:45,215 INFO L231 Difference]: Finished difference. Result has 476 places, 1798 transitions, 46782 flow [2023-08-27 06:49:45,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=46049, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=46782, PETRI_PLACES=476, PETRI_TRANSITIONS=1798} [2023-08-27 06:49:45,216 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 447 predicate places. [2023-08-27 06:49:45,216 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 1798 transitions, 46782 flow [2023-08-27 06:49:45,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:45,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:49:45,216 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] [2023-08-27 06:49:45,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-27 06:49:45,216 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:49:45,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:49:45,217 INFO L85 PathProgramCache]: Analyzing trace with hash -780133370, now seen corresponding path program 28 times [2023-08-27 06:49:45,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:49:45,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275153083] [2023-08-27 06:49:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:49:45,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:49:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:49:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:49:45,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:49:45,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275153083] [2023-08-27 06:49:45,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275153083] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:49:45,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214058823] [2023-08-27 06:49:45,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 06:49:45,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:49:45,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:49:45,288 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:49:45,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-27 06:49:45,405 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 06:49:45,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:49:45,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 06:49:45,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:49:45,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:49:45,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:49:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:49:45,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214058823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:49:45,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:49:45,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2023-08-27 06:49:45,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609003361] [2023-08-27 06:49:45,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:49:45,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 06:49:45,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:49:45,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 06:49:45,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-27 06:49:45,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:49:45,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 1798 transitions, 46782 flow. Second operand has 15 states, 15 states have (on average 78.46666666666667) internal successors, (1177), 15 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:45,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:49:45,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:49:45,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:49:53,418 INFO L124 PetriNetUnfolderBase]: 11931/17577 cut-off events. [2023-08-27 06:49:53,418 INFO L125 PetriNetUnfolderBase]: For 677335/677335 co-relation queries the response was YES. [2023-08-27 06:49:53,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186526 conditions, 17577 events. 11931/17577 cut-off events. For 677335/677335 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 109196 event pairs, 1733 based on Foata normal form. 36/17613 useless extension candidates. Maximal degree in co-relation 186016. Up to 13321 conditions per place. [2023-08-27 06:49:53,821 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1289 selfloop transitions, 835 changer transitions 0/2124 dead transitions. [2023-08-27 06:49:53,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 2124 transitions, 56361 flow [2023-08-27 06:49:53,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 06:49:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 06:49:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1934 transitions. [2023-08-27 06:49:53,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425629290617849 [2023-08-27 06:49:53,824 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1934 transitions. [2023-08-27 06:49:53,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1934 transitions. [2023-08-27 06:49:53,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:49:53,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1934 transitions. [2023-08-27 06:49:53,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 84.08695652173913) internal successors, (1934), 23 states have internal predecessors, (1934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:53,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 190.0) internal successors, (4560), 24 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:53,828 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 190.0) internal successors, (4560), 24 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:49:53,828 INFO L175 Difference]: Start difference. First operand has 476 places, 1798 transitions, 46782 flow. Second operand 23 states and 1934 transitions. [2023-08-27 06:49:53,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 2124 transitions, 56361 flow [2023-08-27 06:50:01,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 2124 transitions, 55666 flow, removed 34 selfloop flow, removed 4 redundant places. [2023-08-27 06:50:01,927 INFO L231 Difference]: Finished difference. Result has 508 places, 1969 transitions, 52251 flow [2023-08-27 06:50:01,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=46107, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=681, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1028, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=52251, PETRI_PLACES=508, PETRI_TRANSITIONS=1969} [2023-08-27 06:50:01,928 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 479 predicate places. [2023-08-27 06:50:01,928 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 1969 transitions, 52251 flow [2023-08-27 06:50:01,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 78.46666666666667) internal successors, (1177), 15 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:01,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:50:01,928 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] [2023-08-27 06:50:01,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-27 06:50:02,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:50:02,132 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:50:02,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:50:02,132 INFO L85 PathProgramCache]: Analyzing trace with hash -14970567, now seen corresponding path program 8 times [2023-08-27 06:50:02,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:50:02,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736277129] [2023-08-27 06:50:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:50:02,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:50:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:50:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:02,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:50:02,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736277129] [2023-08-27 06:50:02,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736277129] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:50:02,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437600710] [2023-08-27 06:50:02,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:50:02,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:50:02,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:50:02,220 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:50:02,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-27 06:50:02,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:50:02,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:50:02,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 06:50:02,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:50:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:02,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:50:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:02,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437600710] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:50:02,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:50:02,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2023-08-27 06:50:02,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192288839] [2023-08-27 06:50:02,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:50:02,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:50:02,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:50:02,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:50:02,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-08-27 06:50:02,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:50:02,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 1969 transitions, 52251 flow. Second operand has 17 states, 17 states have (on average 78.23529411764706) internal successors, (1330), 17 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:02,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:50:02,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:50:02,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:50:12,264 INFO L124 PetriNetUnfolderBase]: 14714/21456 cut-off events. [2023-08-27 06:50:12,264 INFO L125 PetriNetUnfolderBase]: For 888739/888739 co-relation queries the response was YES. [2023-08-27 06:50:12,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232076 conditions, 21456 events. 14714/21456 cut-off events. For 888739/888739 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 134256 event pairs, 1897 based on Foata normal form. 20/21476 useless extension candidates. Maximal degree in co-relation 231520. Up to 10115 conditions per place. [2023-08-27 06:50:12,633 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1595 selfloop transitions, 1000 changer transitions 0/2595 dead transitions. [2023-08-27 06:50:12,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 2595 transitions, 69912 flow [2023-08-27 06:50:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-27 06:50:12,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-27 06:50:12,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2107 transitions. [2023-08-27 06:50:12,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435789473684211 [2023-08-27 06:50:12,635 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2107 transitions. [2023-08-27 06:50:12,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2107 transitions. [2023-08-27 06:50:12,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:50:12,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2107 transitions. [2023-08-27 06:50:12,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 84.28) internal successors, (2107), 25 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:12,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 190.0) internal successors, (4940), 26 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:12,639 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 190.0) internal successors, (4940), 26 states have internal predecessors, (4940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:12,639 INFO L175 Difference]: Start difference. First operand has 508 places, 1969 transitions, 52251 flow. Second operand 25 states and 2107 transitions. [2023-08-27 06:50:12,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 2595 transitions, 69912 flow [2023-08-27 06:50:24,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 2595 transitions, 69193 flow, removed 264 selfloop flow, removed 5 redundant places. [2023-08-27 06:50:24,701 INFO L231 Difference]: Finished difference. Result has 541 places, 2246 transitions, 62080 flow [2023-08-27 06:50:24,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=51582, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1969, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=744, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=62080, PETRI_PLACES=541, PETRI_TRANSITIONS=2246} [2023-08-27 06:50:24,702 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 512 predicate places. [2023-08-27 06:50:24,702 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 2246 transitions, 62080 flow [2023-08-27 06:50:24,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 78.23529411764706) internal successors, (1330), 17 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:24,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:50:24,702 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] [2023-08-27 06:50:24,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-27 06:50:24,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:50:24,903 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:50:24,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:50:24,903 INFO L85 PathProgramCache]: Analyzing trace with hash 985467564, now seen corresponding path program 29 times [2023-08-27 06:50:24,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:50:24,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843101800] [2023-08-27 06:50:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:50:24,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:50:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:50:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:50:24,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843101800] [2023-08-27 06:50:24,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843101800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:50:24,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:50:24,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:50:24,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087219739] [2023-08-27 06:50:24,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:50:24,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:50:24,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:50:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:50:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:50:24,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:50:24,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 2246 transitions, 62080 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:24,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:50:24,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:50:24,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:50:34,949 INFO L124 PetriNetUnfolderBase]: 14734/21492 cut-off events. [2023-08-27 06:50:34,949 INFO L125 PetriNetUnfolderBase]: For 993233/993233 co-relation queries the response was YES. [2023-08-27 06:50:35,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243687 conditions, 21492 events. 14734/21492 cut-off events. For 993233/993233 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 134886 event pairs, 2901 based on Foata normal form. 16/21508 useless extension candidates. Maximal degree in co-relation 243139. Up to 19669 conditions per place. [2023-08-27 06:50:35,444 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1887 selfloop transitions, 389 changer transitions 0/2276 dead transitions. [2023-08-27 06:50:35,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 2276 transitions, 67128 flow [2023-08-27 06:50:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:50:35,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:50:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 594 transitions. [2023-08-27 06:50:35,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44661654135338347 [2023-08-27 06:50:35,445 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 594 transitions. [2023-08-27 06:50:35,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 594 transitions. [2023-08-27 06:50:35,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:50:35,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 594 transitions. [2023-08-27 06:50:35,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:35,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:35,447 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:35,447 INFO L175 Difference]: Start difference. First operand has 541 places, 2246 transitions, 62080 flow. Second operand 7 states and 594 transitions. [2023-08-27 06:50:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 2276 transitions, 67128 flow [2023-08-27 06:50:49,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 2276 transitions, 66447 flow, removed 277 selfloop flow, removed 2 redundant places. [2023-08-27 06:50:49,233 INFO L231 Difference]: Finished difference. Result has 546 places, 2250 transitions, 62363 flow [2023-08-27 06:50:49,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=61401, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1857, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=62363, PETRI_PLACES=546, PETRI_TRANSITIONS=2250} [2023-08-27 06:50:49,234 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 517 predicate places. [2023-08-27 06:50:49,234 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 2250 transitions, 62363 flow [2023-08-27 06:50:49,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:49,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:50:49,234 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] [2023-08-27 06:50:49,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-27 06:50:49,235 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:50:49,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:50:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash -964801567, now seen corresponding path program 9 times [2023-08-27 06:50:49,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:50:49,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243324160] [2023-08-27 06:50:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:50:49,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:50:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:50:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:49,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:50:49,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243324160] [2023-08-27 06:50:49,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243324160] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:50:49,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939822500] [2023-08-27 06:50:49,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 06:50:49,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:50:49,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:50:49,315 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:50:49,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-27 06:50:49,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 06:50:49,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:50:49,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 06:50:49,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:50:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:49,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:50:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:50:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939822500] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:50:49,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:50:49,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-27 06:50:49,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121442357] [2023-08-27 06:50:49,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:50:49,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-27 06:50:49,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:50:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-27 06:50:49,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-08-27 06:50:49,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 190 [2023-08-27 06:50:49,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 2250 transitions, 62363 flow. Second operand has 18 states, 18 states have (on average 73.22222222222223) internal successors, (1318), 18 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:50:49,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:50:49,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 190 [2023-08-27 06:50:49,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:51:00,291 INFO L124 PetriNetUnfolderBase]: 14893/21789 cut-off events. [2023-08-27 06:51:00,292 INFO L125 PetriNetUnfolderBase]: For 994838/994838 co-relation queries the response was YES. [2023-08-27 06:51:00,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245703 conditions, 21789 events. 14893/21789 cut-off events. For 994838/994838 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 137370 event pairs, 980 based on Foata normal form. 8/21797 useless extension candidates. Maximal degree in co-relation 245163. Up to 10737 conditions per place. [2023-08-27 06:51:00,682 INFO L140 encePairwiseOnDemand]: 180/190 looper letters, 1649 selfloop transitions, 867 changer transitions 0/2516 dead transitions. [2023-08-27 06:51:00,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 2516 transitions, 72107 flow [2023-08-27 06:51:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 06:51:00,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 06:51:00,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1207 transitions. [2023-08-27 06:51:00,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42350877192982456 [2023-08-27 06:51:00,683 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1207 transitions. [2023-08-27 06:51:00,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1207 transitions. [2023-08-27 06:51:00,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:51:00,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1207 transitions. [2023-08-27 06:51:00,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 80.46666666666667) internal successors, (1207), 15 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:00,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 190.0) internal successors, (3040), 16 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:00,686 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 190.0) internal successors, (3040), 16 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:00,686 INFO L175 Difference]: Start difference. First operand has 546 places, 2250 transitions, 62363 flow. Second operand 15 states and 1207 transitions. [2023-08-27 06:51:00,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 2516 transitions, 72107 flow [2023-08-27 06:51:14,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 2516 transitions, 71306 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-27 06:51:14,640 INFO L231 Difference]: Finished difference. Result has 557 places, 2259 transitions, 64507 flow [2023-08-27 06:51:14,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=61456, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=855, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=64507, PETRI_PLACES=557, PETRI_TRANSITIONS=2259} [2023-08-27 06:51:14,641 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 528 predicate places. [2023-08-27 06:51:14,642 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 2259 transitions, 64507 flow [2023-08-27 06:51:14,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.22222222222223) internal successors, (1318), 18 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:14,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:51:14,642 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] [2023-08-27 06:51:14,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-27 06:51:14,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2023-08-27 06:51:14,843 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:51:14,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:51:14,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1928307793, now seen corresponding path program 10 times [2023-08-27 06:51:14,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:51:14,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325588815] [2023-08-27 06:51:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:51:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:51:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:51:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:51:14,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:51:14,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325588815] [2023-08-27 06:51:14,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325588815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:51:14,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:51:14,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:51:14,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075137621] [2023-08-27 06:51:14,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:51:14,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:51:14,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:51:14,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:51:14,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:51:14,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:51:14,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 2259 transitions, 64507 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:14,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:51:14,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:51:14,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:51:25,584 INFO L124 PetriNetUnfolderBase]: 14897/21846 cut-off events. [2023-08-27 06:51:25,584 INFO L125 PetriNetUnfolderBase]: For 1091404/1091404 co-relation queries the response was YES. [2023-08-27 06:51:25,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251188 conditions, 21846 events. 14897/21846 cut-off events. For 1091404/1091404 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 138819 event pairs, 2616 based on Foata normal form. 36/21882 useless extension candidates. Maximal degree in co-relation 250643. Up to 18193 conditions per place. [2023-08-27 06:51:25,982 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1759 selfloop transitions, 553 changer transitions 13/2325 dead transitions. [2023-08-27 06:51:25,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 2325 transitions, 70286 flow [2023-08-27 06:51:25,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:51:25,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:51:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 603 transitions. [2023-08-27 06:51:25,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45338345864661656 [2023-08-27 06:51:25,983 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 603 transitions. [2023-08-27 06:51:25,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 603 transitions. [2023-08-27 06:51:25,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:51:25,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 603 transitions. [2023-08-27 06:51:25,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.14285714285714) internal successors, (603), 7 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:25,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:25,984 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:25,984 INFO L175 Difference]: Start difference. First operand has 557 places, 2259 transitions, 64507 flow. Second operand 7 states and 603 transitions. [2023-08-27 06:51:25,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 2325 transitions, 70286 flow [2023-08-27 06:51:40,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 2325 transitions, 69306 flow, removed 19 selfloop flow, removed 10 redundant places. [2023-08-27 06:51:40,807 INFO L231 Difference]: Finished difference. Result has 556 places, 2267 transitions, 65018 flow [2023-08-27 06:51:40,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=63547, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=545, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=65018, PETRI_PLACES=556, PETRI_TRANSITIONS=2267} [2023-08-27 06:51:40,808 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 527 predicate places. [2023-08-27 06:51:40,808 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 2267 transitions, 65018 flow [2023-08-27 06:51:40,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:40,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:51:40,809 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] [2023-08-27 06:51:40,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-27 06:51:40,809 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:51:40,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:51:40,809 INFO L85 PathProgramCache]: Analyzing trace with hash 628653514, now seen corresponding path program 16 times [2023-08-27 06:51:40,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:51:40,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448188792] [2023-08-27 06:51:40,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:51:40,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:51:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:51:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:51:40,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:51:40,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448188792] [2023-08-27 06:51:40,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448188792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:51:40,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:51:40,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:51:40,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154503125] [2023-08-27 06:51:40,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:51:40,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:51:40,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:51:40,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:51:40,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:51:40,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:51:40,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 2267 transitions, 65018 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:40,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:51:40,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:51:40,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:51:51,631 INFO L124 PetriNetUnfolderBase]: 14897/21918 cut-off events. [2023-08-27 06:51:51,632 INFO L125 PetriNetUnfolderBase]: For 1059539/1059539 co-relation queries the response was YES. [2023-08-27 06:51:51,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253144 conditions, 21918 events. 14897/21918 cut-off events. For 1059539/1059539 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 140160 event pairs, 2260 based on Foata normal form. 44/21962 useless extension candidates. Maximal degree in co-relation 252612. Up to 15697 conditions per place. [2023-08-27 06:51:52,058 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1613 selfloop transitions, 769 changer transitions 9/2391 dead transitions. [2023-08-27 06:51:52,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 2391 transitions, 72267 flow [2023-08-27 06:51:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:51:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:51:52,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 595 transitions. [2023-08-27 06:51:52,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2023-08-27 06:51:52,059 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 595 transitions. [2023-08-27 06:51:52,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 595 transitions. [2023-08-27 06:51:52,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:51:52,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 595 transitions. [2023-08-27 06:51:52,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:52,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:52,061 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:51:52,061 INFO L175 Difference]: Start difference. First operand has 556 places, 2267 transitions, 65018 flow. Second operand 7 states and 595 transitions. [2023-08-27 06:51:52,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 2391 transitions, 72267 flow [2023-08-27 06:52:06,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 2391 transitions, 71127 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-27 06:52:06,908 INFO L231 Difference]: Finished difference. Result has 560 places, 2285 transitions, 66293 flow [2023-08-27 06:52:06,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=63908, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=751, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=66293, PETRI_PLACES=560, PETRI_TRANSITIONS=2285} [2023-08-27 06:52:06,909 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 531 predicate places. [2023-08-27 06:52:06,909 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 2285 transitions, 66293 flow [2023-08-27 06:52:06,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:06,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:52:06,910 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] [2023-08-27 06:52:06,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-27 06:52:06,910 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:52:06,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:52:06,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1272576036, now seen corresponding path program 30 times [2023-08-27 06:52:06,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:52:06,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018472550] [2023-08-27 06:52:06,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:52:06,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:52:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:52:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:52:06,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:52:06,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018472550] [2023-08-27 06:52:06,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018472550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:52:06,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:52:06,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:52:06,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363700257] [2023-08-27 06:52:06,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:52:06,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:52:06,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:52:06,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:52:06,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:52:06,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:52:06,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 2285 transitions, 66293 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:06,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:52:06,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:52:06,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:52:18,310 INFO L124 PetriNetUnfolderBase]: 14973/21989 cut-off events. [2023-08-27 06:52:18,310 INFO L125 PetriNetUnfolderBase]: For 1105332/1105332 co-relation queries the response was YES. [2023-08-27 06:52:18,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256924 conditions, 21989 events. 14973/21989 cut-off events. For 1105332/1105332 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 140233 event pairs, 2671 based on Foata normal form. 30/22019 useless extension candidates. Maximal degree in co-relation 256611. Up to 18422 conditions per place. [2023-08-27 06:52:18,830 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1739 selfloop transitions, 634 changer transitions 0/2373 dead transitions. [2023-08-27 06:52:18,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 2373 transitions, 72653 flow [2023-08-27 06:52:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:52:18,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:52:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-27 06:52:18,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548872180451128 [2023-08-27 06:52:18,831 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-27 06:52:18,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-27 06:52:18,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:52:18,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-27 06:52:18,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:18,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:18,832 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:18,833 INFO L175 Difference]: Start difference. First operand has 560 places, 2285 transitions, 66293 flow. Second operand 7 states and 605 transitions. [2023-08-27 06:52:18,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 2373 transitions, 72653 flow [2023-08-27 06:52:33,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 2373 transitions, 71031 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-08-27 06:52:33,258 INFO L231 Difference]: Finished difference. Result has 563 places, 2309 transitions, 67121 flow [2023-08-27 06:52:33,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=64692, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=67121, PETRI_PLACES=563, PETRI_TRANSITIONS=2309} [2023-08-27 06:52:33,259 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 534 predicate places. [2023-08-27 06:52:33,259 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 2309 transitions, 67121 flow [2023-08-27 06:52:33,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:33,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:52:33,260 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] [2023-08-27 06:52:33,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-27 06:52:33,260 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:52:33,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:52:33,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1076895340, now seen corresponding path program 31 times [2023-08-27 06:52:33,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:52:33,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193229212] [2023-08-27 06:52:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:52:33,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:52:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:52:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:52:33,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:52:33,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193229212] [2023-08-27 06:52:33,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193229212] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:52:33,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:52:33,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:52:33,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926428285] [2023-08-27 06:52:33,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:52:33,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:52:33,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:52:33,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:52:33,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:52:33,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:52:33,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 2309 transitions, 67121 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:33,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:52:33,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:52:33,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:52:44,218 INFO L124 PetriNetUnfolderBase]: 14959/21941 cut-off events. [2023-08-27 06:52:44,219 INFO L125 PetriNetUnfolderBase]: For 1083433/1083433 co-relation queries the response was YES. [2023-08-27 06:52:44,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256486 conditions, 21941 events. 14959/21941 cut-off events. For 1083433/1083433 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 139600 event pairs, 2642 based on Foata normal form. 24/21965 useless extension candidates. Maximal degree in co-relation 255925. Up to 18159 conditions per place. [2023-08-27 06:52:44,752 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1719 selfloop transitions, 660 changer transitions 0/2379 dead transitions. [2023-08-27 06:52:44,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 2379 transitions, 72882 flow [2023-08-27 06:52:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:52:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:52:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 607 transitions. [2023-08-27 06:52:44,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456390977443609 [2023-08-27 06:52:44,753 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 607 transitions. [2023-08-27 06:52:44,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 607 transitions. [2023-08-27 06:52:44,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:52:44,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 607 transitions. [2023-08-27 06:52:44,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:44,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:44,755 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:44,755 INFO L175 Difference]: Start difference. First operand has 563 places, 2309 transitions, 67121 flow. Second operand 7 states and 607 transitions. [2023-08-27 06:52:44,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 2379 transitions, 72882 flow [2023-08-27 06:52:58,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 2379 transitions, 72255 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-08-27 06:52:58,722 INFO L231 Difference]: Finished difference. Result has 568 places, 2313 transitions, 68030 flow [2023-08-27 06:52:58,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=66500, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=68030, PETRI_PLACES=568, PETRI_TRANSITIONS=2313} [2023-08-27 06:52:58,723 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 539 predicate places. [2023-08-27 06:52:58,723 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 2313 transitions, 68030 flow [2023-08-27 06:52:58,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:58,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:52:58,723 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] [2023-08-27 06:52:58,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-27 06:52:58,723 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:52:58,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:52:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash -619196296, now seen corresponding path program 32 times [2023-08-27 06:52:58,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:52:58,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343157265] [2023-08-27 06:52:58,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:52:58,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:52:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:52:58,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:52:58,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:52:58,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343157265] [2023-08-27 06:52:58,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343157265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:52:58,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:52:58,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:52:58,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883020979] [2023-08-27 06:52:58,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:52:58,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:52:58,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:52:58,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:52:58,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:52:58,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:52:58,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 2313 transitions, 68030 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:52:58,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:52:58,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:52:58,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:53:09,674 INFO L124 PetriNetUnfolderBase]: 14958/21942 cut-off events. [2023-08-27 06:53:09,674 INFO L125 PetriNetUnfolderBase]: For 1108617/1108617 co-relation queries the response was YES. [2023-08-27 06:53:10,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257107 conditions, 21942 events. 14958/21942 cut-off events. For 1108617/1108617 co-relation queries the response was YES. Maximal size of possible extension queue 1297. Compared 139702 event pairs, 2697 based on Foata normal form. 2/21944 useless extension candidates. Maximal degree in co-relation 256545. Up to 18372 conditions per place. [2023-08-27 06:53:10,213 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1780 selfloop transitions, 559 changer transitions 2/2341 dead transitions. [2023-08-27 06:53:10,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 2341 transitions, 73096 flow [2023-08-27 06:53:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:53:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:53:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 06:53:10,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 06:53:10,215 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 06:53:10,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 06:53:10,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:53:10,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 06:53:10,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:53:10,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:53:10,216 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:53:10,216 INFO L175 Difference]: Start difference. First operand has 568 places, 2313 transitions, 68030 flow. Second operand 7 states and 590 transitions. [2023-08-27 06:53:10,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 2341 transitions, 73096 flow [2023-08-27 06:53:24,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 2341 transitions, 72031 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-27 06:53:24,579 INFO L231 Difference]: Finished difference. Result has 569 places, 2313 transitions, 68087 flow [2023-08-27 06:53:24,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=66967, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=559, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=68087, PETRI_PLACES=569, PETRI_TRANSITIONS=2313} [2023-08-27 06:53:24,580 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 540 predicate places. [2023-08-27 06:53:24,580 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 2313 transitions, 68087 flow [2023-08-27 06:53:24,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:53:24,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:53:24,580 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] [2023-08-27 06:53:24,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-27 06:53:24,580 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:53:24,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:53:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1081632670, now seen corresponding path program 33 times [2023-08-27 06:53:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:53:24,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735851352] [2023-08-27 06:53:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:53:24,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:53:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:53:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:53:24,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:53:24,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735851352] [2023-08-27 06:53:24,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735851352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:53:24,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:53:24,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:53:24,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474217971] [2023-08-27 06:53:24,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:53:24,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:53:24,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:53:24,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:53:24,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:53:24,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:53:24,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 2313 transitions, 68087 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:53:24,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:53:24,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:53:24,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:53:36,031 INFO L124 PetriNetUnfolderBase]: 15089/22182 cut-off events. [2023-08-27 06:53:36,032 INFO L125 PetriNetUnfolderBase]: For 1117406/1117406 co-relation queries the response was YES. [2023-08-27 06:53:36,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260291 conditions, 22182 events. 15089/22182 cut-off events. For 1117406/1117406 co-relation queries the response was YES. Maximal size of possible extension queue 1317. Compared 141727 event pairs, 1595 based on Foata normal form. 18/22200 useless extension candidates. Maximal degree in co-relation 259852. Up to 10593 conditions per place. [2023-08-27 06:53:36,459 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1730 selfloop transitions, 810 changer transitions 7/2547 dead transitions. [2023-08-27 06:53:36,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 2547 transitions, 78200 flow [2023-08-27 06:53:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:53:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:53:36,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 600 transitions. [2023-08-27 06:53:36,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45112781954887216 [2023-08-27 06:53:36,460 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 600 transitions. [2023-08-27 06:53:36,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 600 transitions. [2023-08-27 06:53:36,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:53:36,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 600 transitions. [2023-08-27 06:53:36,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:53:36,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:53:36,462 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:53:36,462 INFO L175 Difference]: Start difference. First operand has 569 places, 2313 transitions, 68087 flow. Second operand 7 states and 600 transitions. [2023-08-27 06:53:36,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 2547 transitions, 78200 flow [2023-08-27 06:53:52,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 2547 transitions, 76634 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-27 06:53:52,310 INFO L231 Difference]: Finished difference. Result has 574 places, 2345 transitions, 69924 flow [2023-08-27 06:53:52,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=66640, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=777, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=69924, PETRI_PLACES=574, PETRI_TRANSITIONS=2345} [2023-08-27 06:53:52,311 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 545 predicate places. [2023-08-27 06:53:52,311 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 2345 transitions, 69924 flow [2023-08-27 06:53:52,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:53:52,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:53:52,311 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] [2023-08-27 06:53:52,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-27 06:53:52,312 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:53:52,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:53:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1755131736, now seen corresponding path program 17 times [2023-08-27 06:53:52,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:53:52,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890529272] [2023-08-27 06:53:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:53:52,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:53:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:53:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:53:52,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:53:52,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890529272] [2023-08-27 06:53:52,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890529272] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:53:52,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390745252] [2023-08-27 06:53:52,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 06:53:52,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:53:52,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:53:52,390 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:53:52,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-27 06:53:52,514 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:53:52,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:53:52,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-27 06:53:52,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:53:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:53:52,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:53:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:53:52,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390745252] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-27 06:53:52,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-27 06:53:52,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2023-08-27 06:53:52,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835535147] [2023-08-27 06:53:52,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:53:52,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 06:53:52,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:53:52,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 06:53:52,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-27 06:53:52,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 190 [2023-08-27 06:53:52,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 2345 transitions, 69924 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:53:52,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:53:52,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 190 [2023-08-27 06:53:52,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:54:04,026 INFO L124 PetriNetUnfolderBase]: 14922/21915 cut-off events. [2023-08-27 06:54:04,026 INFO L125 PetriNetUnfolderBase]: For 1170835/1171286 co-relation queries the response was YES. [2023-08-27 06:54:04,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260895 conditions, 21915 events. 14922/21915 cut-off events. For 1170835/1171286 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 140061 event pairs, 1962 based on Foata normal form. 321/22159 useless extension candidates. Maximal degree in co-relation 260622. Up to 12905 conditions per place. [2023-08-27 06:54:04,444 INFO L140 encePairwiseOnDemand]: 183/190 looper letters, 1869 selfloop transitions, 500 changer transitions 0/2429 dead transitions. [2023-08-27 06:54:04,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 2429 transitions, 75922 flow [2023-08-27 06:54:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:54:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:54:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2023-08-27 06:54:04,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47719298245614034 [2023-08-27 06:54:04,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2023-08-27 06:54:04,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2023-08-27 06:54:04,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:54:04,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2023-08-27 06:54:04,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:54:04,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:54:04,447 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:54:04,447 INFO L175 Difference]: Start difference. First operand has 574 places, 2345 transitions, 69924 flow. Second operand 6 states and 544 transitions. [2023-08-27 06:54:04,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 2429 transitions, 75922 flow [2023-08-27 06:54:19,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 2429 transitions, 74408 flow, removed 104 selfloop flow, removed 6 redundant places. [2023-08-27 06:54:19,456 INFO L231 Difference]: Finished difference. Result has 573 places, 2347 transitions, 69599 flow [2023-08-27 06:54:19,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=68362, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1843, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=69599, PETRI_PLACES=573, PETRI_TRANSITIONS=2347} [2023-08-27 06:54:19,457 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 544 predicate places. [2023-08-27 06:54:19,457 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 2347 transitions, 69599 flow [2023-08-27 06:54:19,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:54:19,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:54:19,457 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] [2023-08-27 06:54:19,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-27 06:54:19,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:54:19,660 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:54:19,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:54:19,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2146327266, now seen corresponding path program 34 times [2023-08-27 06:54:19,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:54:19,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974032352] [2023-08-27 06:54:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:54:19,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:54:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:54:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:54:19,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:54:19,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974032352] [2023-08-27 06:54:19,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974032352] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:54:19,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:54:19,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:54:19,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652080598] [2023-08-27 06:54:19,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:54:19,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:54:19,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:54:19,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:54:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:54:19,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:54:19,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 2347 transitions, 69599 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:54:19,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:54:19,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:54:19,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:54:31,212 INFO L124 PetriNetUnfolderBase]: 15075/22143 cut-off events. [2023-08-27 06:54:31,212 INFO L125 PetriNetUnfolderBase]: For 1142045/1142045 co-relation queries the response was YES. [2023-08-27 06:54:31,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261271 conditions, 22143 events. 15075/22143 cut-off events. For 1142045/1142045 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 141485 event pairs, 2693 based on Foata normal form. 8/22151 useless extension candidates. Maximal degree in co-relation 260715. Up to 18482 conditions per place. [2023-08-27 06:54:31,644 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1788 selfloop transitions, 594 changer transitions 0/2382 dead transitions. [2023-08-27 06:54:31,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 2382 transitions, 74895 flow [2023-08-27 06:54:31,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:54:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:54:31,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 594 transitions. [2023-08-27 06:54:31,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44661654135338347 [2023-08-27 06:54:31,645 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 594 transitions. [2023-08-27 06:54:31,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 594 transitions. [2023-08-27 06:54:31,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:54:31,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 594 transitions. [2023-08-27 06:54:31,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:54:31,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:54:31,646 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:54:31,646 INFO L175 Difference]: Start difference. First operand has 573 places, 2347 transitions, 69599 flow. Second operand 7 states and 594 transitions. [2023-08-27 06:54:31,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 2382 transitions, 74895 flow [2023-08-27 06:54:47,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 2382 transitions, 74379 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-27 06:54:48,030 INFO L231 Difference]: Finished difference. Result has 575 places, 2349 transitions, 70345 flow [2023-08-27 06:54:48,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=69085, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70345, PETRI_PLACES=575, PETRI_TRANSITIONS=2349} [2023-08-27 06:54:48,031 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 546 predicate places. [2023-08-27 06:54:48,031 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 2349 transitions, 70345 flow [2023-08-27 06:54:48,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:54:48,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:54:48,031 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] [2023-08-27 06:54:48,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-27 06:54:48,032 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:54:48,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:54:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash -645454056, now seen corresponding path program 35 times [2023-08-27 06:54:48,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:54:48,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431200746] [2023-08-27 06:54:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:54:48,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:54:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:54:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:54:48,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:54:48,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431200746] [2023-08-27 06:54:48,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431200746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:54:48,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:54:48,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:54:48,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629458642] [2023-08-27 06:54:48,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:54:48,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:54:48,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:54:48,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:54:48,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:54:48,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:54:48,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 2349 transitions, 70345 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:54:48,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:54:48,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:54:48,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:54:59,485 INFO L124 PetriNetUnfolderBase]: 15073/22141 cut-off events. [2023-08-27 06:54:59,486 INFO L125 PetriNetUnfolderBase]: For 1150491/1150491 co-relation queries the response was YES. [2023-08-27 06:54:59,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263989 conditions, 22141 events. 15073/22141 cut-off events. For 1150491/1150491 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 141566 event pairs, 2691 based on Foata normal form. 2/22143 useless extension candidates. Maximal degree in co-relation 263423. Up to 18474 conditions per place. [2023-08-27 06:55:00,042 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1779 selfloop transitions, 596 changer transitions 2/2377 dead transitions. [2023-08-27 06:55:00,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 2377 transitions, 75496 flow [2023-08-27 06:55:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:55:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:55:00,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2023-08-27 06:55:00,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-27 06:55:00,043 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 590 transitions. [2023-08-27 06:55:00,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 590 transitions. [2023-08-27 06:55:00,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:55:00,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 590 transitions. [2023-08-27 06:55:00,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.28571428571429) internal successors, (590), 7 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:00,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:00,044 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:00,044 INFO L175 Difference]: Start difference. First operand has 575 places, 2349 transitions, 70345 flow. Second operand 7 states and 590 transitions. [2023-08-27 06:55:00,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 2377 transitions, 75496 flow [2023-08-27 06:55:15,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 2377 transitions, 74873 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-27 06:55:15,253 INFO L231 Difference]: Finished difference. Result has 578 places, 2349 transitions, 70922 flow [2023-08-27 06:55:15,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=69670, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=595, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1752, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70922, PETRI_PLACES=578, PETRI_TRANSITIONS=2349} [2023-08-27 06:55:15,254 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 549 predicate places. [2023-08-27 06:55:15,254 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 2349 transitions, 70922 flow [2023-08-27 06:55:15,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:15,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:55:15,254 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] [2023-08-27 06:55:15,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-27 06:55:15,254 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:55:15,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:55:15,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1813801420, now seen corresponding path program 36 times [2023-08-27 06:55:15,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:55:15,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741442519] [2023-08-27 06:55:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:55:15,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:55:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:55:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:55:15,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:55:15,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741442519] [2023-08-27 06:55:15,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741442519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:55:15,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:55:15,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:55:15,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360749253] [2023-08-27 06:55:15,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:55:15,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:55:15,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:55:15,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:55:15,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:55:15,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:55:15,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 2349 transitions, 70922 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:15,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:55:15,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:55:15,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:55:26,940 INFO L124 PetriNetUnfolderBase]: 15129/22250 cut-off events. [2023-08-27 06:55:26,940 INFO L125 PetriNetUnfolderBase]: For 1189626/1189626 co-relation queries the response was YES. [2023-08-27 06:55:27,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265665 conditions, 22250 events. 15129/22250 cut-off events. For 1189626/1189626 co-relation queries the response was YES. Maximal size of possible extension queue 1336. Compared 142707 event pairs, 2637 based on Foata normal form. 20/22270 useless extension candidates. Maximal degree in co-relation 265098. Up to 18426 conditions per place. [2023-08-27 06:55:27,367 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1749 selfloop transitions, 667 changer transitions 5/2421 dead transitions. [2023-08-27 06:55:27,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 2421 transitions, 77199 flow [2023-08-27 06:55:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:55:27,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:55:27,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 597 transitions. [2023-08-27 06:55:27,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4488721804511278 [2023-08-27 06:55:27,368 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 597 transitions. [2023-08-27 06:55:27,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 597 transitions. [2023-08-27 06:55:27,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:55:27,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 597 transitions. [2023-08-27 06:55:27,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.28571428571429) internal successors, (597), 7 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:27,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:27,369 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:27,370 INFO L175 Difference]: Start difference. First operand has 578 places, 2349 transitions, 70922 flow. Second operand 7 states and 597 transitions. [2023-08-27 06:55:27,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 2421 transitions, 77199 flow [2023-08-27 06:55:42,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 2421 transitions, 75968 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 06:55:42,977 INFO L231 Difference]: Finished difference. Result has 581 places, 2358 transitions, 71398 flow [2023-08-27 06:55:42,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=69702, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=657, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=71398, PETRI_PLACES=581, PETRI_TRANSITIONS=2358} [2023-08-27 06:55:42,978 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 552 predicate places. [2023-08-27 06:55:42,978 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 2358 transitions, 71398 flow [2023-08-27 06:55:42,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:42,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:55:42,979 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] [2023-08-27 06:55:42,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-27 06:55:42,979 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:55:42,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:55:42,979 INFO L85 PathProgramCache]: Analyzing trace with hash -548989458, now seen corresponding path program 37 times [2023-08-27 06:55:42,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:55:42,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326575056] [2023-08-27 06:55:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:55:42,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:55:42,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:55:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:55:43,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:55:43,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326575056] [2023-08-27 06:55:43,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326575056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:55:43,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:55:43,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:55:43,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100362231] [2023-08-27 06:55:43,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:55:43,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:55:43,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:55:43,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:55:43,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:55:43,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:55:43,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 2358 transitions, 71398 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:43,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:55:43,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:55:43,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:55:54,530 INFO L124 PetriNetUnfolderBase]: 15090/22156 cut-off events. [2023-08-27 06:55:54,531 INFO L125 PetriNetUnfolderBase]: For 1171734/1171734 co-relation queries the response was YES. [2023-08-27 06:55:54,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265263 conditions, 22156 events. 15090/22156 cut-off events. For 1171734/1171734 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 141346 event pairs, 2199 based on Foata normal form. 32/22188 useless extension candidates. Maximal degree in co-relation 264828. Up to 14431 conditions per place. [2023-08-27 06:55:54,966 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1824 selfloop transitions, 647 changer transitions 1/2472 dead transitions. [2023-08-27 06:55:54,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 2472 transitions, 78292 flow [2023-08-27 06:55:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:55:54,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:55:54,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 604 transitions. [2023-08-27 06:55:54,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45413533834586467 [2023-08-27 06:55:54,967 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 604 transitions. [2023-08-27 06:55:54,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 604 transitions. [2023-08-27 06:55:54,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:55:54,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 604 transitions. [2023-08-27 06:55:54,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.28571428571429) internal successors, (604), 7 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:54,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:54,968 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:55:54,968 INFO L175 Difference]: Start difference. First operand has 581 places, 2358 transitions, 71398 flow. Second operand 7 states and 604 transitions. [2023-08-27 06:55:54,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 2472 transitions, 78292 flow [2023-08-27 06:56:11,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 2472 transitions, 77453 flow, removed 43 selfloop flow, removed 6 redundant places. [2023-08-27 06:56:11,189 INFO L231 Difference]: Finished difference. Result has 581 places, 2358 transitions, 71979 flow [2023-08-27 06:56:11,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=70420, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=640, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=71979, PETRI_PLACES=581, PETRI_TRANSITIONS=2358} [2023-08-27 06:56:11,190 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 552 predicate places. [2023-08-27 06:56:11,191 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 2358 transitions, 71979 flow [2023-08-27 06:56:11,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:56:11,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:56:11,191 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] [2023-08-27 06:56:11,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-08-27 06:56:11,191 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:56:11,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:56:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash -2050924690, now seen corresponding path program 38 times [2023-08-27 06:56:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:56:11,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574666579] [2023-08-27 06:56:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:56:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:56:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:56:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:56:11,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:56:11,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574666579] [2023-08-27 06:56:11,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574666579] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:56:11,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139874836] [2023-08-27 06:56:11,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:56:11,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:56:11,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:56:11,274 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:56:11,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-27 06:56:11,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 06:56:11,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:56:11,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-27 06:56:11,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:56:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:56:11,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:56:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:56:11,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139874836] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:56:11,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:56:11,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-27 06:56:11,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316331058] [2023-08-27 06:56:11,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:56:11,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-27 06:56:11,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:56:11,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-27 06:56:11,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-08-27 06:56:11,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:56:11,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 2358 transitions, 71979 flow. Second operand has 17 states, 17 states have (on average 78.05882352941177) internal successors, (1327), 17 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:56:11,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:56:11,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:56:11,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:56:24,974 INFO L124 PetriNetUnfolderBase]: 16111/23943 cut-off events. [2023-08-27 06:56:24,974 INFO L125 PetriNetUnfolderBase]: For 1301575/1301575 co-relation queries the response was YES. [2023-08-27 06:56:25,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284896 conditions, 23943 events. 16111/23943 cut-off events. For 1301575/1301575 co-relation queries the response was YES. Maximal size of possible extension queue 1471. Compared 158581 event pairs, 1153 based on Foata normal form. 58/24001 useless extension candidates. Maximal degree in co-relation 284329. Up to 7753 conditions per place. [2023-08-27 06:56:25,449 INFO L140 encePairwiseOnDemand]: 181/190 looper letters, 1587 selfloop transitions, 1363 changer transitions 0/2950 dead transitions. [2023-08-27 06:56:25,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 2950 transitions, 89889 flow [2023-08-27 06:56:25,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-27 06:56:25,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-27 06:56:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2301 transitions. [2023-08-27 06:56:25,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44853801169590646 [2023-08-27 06:56:25,451 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2301 transitions. [2023-08-27 06:56:25,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2301 transitions. [2023-08-27 06:56:25,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:56:25,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2301 transitions. [2023-08-27 06:56:25,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 85.22222222222223) internal successors, (2301), 27 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:56:25,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 190.0) internal successors, (5320), 28 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:56:25,456 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 190.0) internal successors, (5320), 28 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:56:25,456 INFO L175 Difference]: Start difference. First operand has 581 places, 2358 transitions, 71979 flow. Second operand 27 states and 2301 transitions. [2023-08-27 06:56:25,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 2950 transitions, 89889 flow [2023-08-27 06:56:43,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 2950 transitions, 88320 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-27 06:56:44,025 INFO L231 Difference]: Finished difference. Result has 608 places, 2476 transitions, 78704 flow [2023-08-27 06:56:44,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=70404, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1038, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=78704, PETRI_PLACES=608, PETRI_TRANSITIONS=2476} [2023-08-27 06:56:44,026 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 579 predicate places. [2023-08-27 06:56:44,026 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 2476 transitions, 78704 flow [2023-08-27 06:56:44,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 78.05882352941177) internal successors, (1327), 17 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:56:44,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:56:44,026 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] [2023-08-27 06:56:44,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-27 06:56:44,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:56:44,226 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:56:44,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:56:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash 857965154, now seen corresponding path program 39 times [2023-08-27 06:56:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:56:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386258727] [2023-08-27 06:56:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:56:44,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:56:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:56:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:56:44,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:56:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386258727] [2023-08-27 06:56:44,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386258727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:56:44,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:56:44,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:56:44,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789465332] [2023-08-27 06:56:44,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:56:44,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:56:44,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:56:44,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:56:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:56:44,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:56:44,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 2476 transitions, 78704 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:56:44,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:56:44,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:56:44,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:56:57,803 INFO L124 PetriNetUnfolderBase]: 16166/24051 cut-off events. [2023-08-27 06:56:57,803 INFO L125 PetriNetUnfolderBase]: For 1423079/1423079 co-relation queries the response was YES. [2023-08-27 06:56:58,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292685 conditions, 24051 events. 16166/24051 cut-off events. For 1423079/1423079 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 159919 event pairs, 2848 based on Foata normal form. 14/24065 useless extension candidates. Maximal degree in co-relation 292118. Up to 19387 conditions per place. [2023-08-27 06:56:58,400 INFO L140 encePairwiseOnDemand]: 182/190 looper letters, 1757 selfloop transitions, 789 changer transitions 5/2551 dead transitions. [2023-08-27 06:56:58,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 2551 transitions, 85416 flow [2023-08-27 06:56:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:56:58,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 06:56:58,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 599 transitions. [2023-08-27 06:56:58,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45037593984962404 [2023-08-27 06:56:58,402 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 599 transitions. [2023-08-27 06:56:58,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 599 transitions. [2023-08-27 06:56:58,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:56:58,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 599 transitions. [2023-08-27 06:56:58,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.57142857142857) internal successors, (599), 7 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:56:58,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:56:58,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:56:58,403 INFO L175 Difference]: Start difference. First operand has 608 places, 2476 transitions, 78704 flow. Second operand 7 states and 599 transitions. [2023-08-27 06:56:58,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 2551 transitions, 85416 flow [2023-08-27 06:57:18,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 2551 transitions, 84024 flow, removed 198 selfloop flow, removed 3 redundant places. [2023-08-27 06:57:18,837 INFO L231 Difference]: Finished difference. Result has 614 places, 2490 transitions, 79537 flow [2023-08-27 06:57:18,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=77378, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=775, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=79537, PETRI_PLACES=614, PETRI_TRANSITIONS=2490} [2023-08-27 06:57:18,838 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 585 predicate places. [2023-08-27 06:57:18,838 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 2490 transitions, 79537 flow [2023-08-27 06:57:18,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:57:18,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:57:18,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:57:18,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-08-27 06:57:18,839 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:57:18,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:57:18,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1410385138, now seen corresponding path program 40 times [2023-08-27 06:57:18,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:57:18,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474364124] [2023-08-27 06:57:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:57:18,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:57:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:57:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:57:18,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:57:18,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474364124] [2023-08-27 06:57:18,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474364124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:57:18,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:57:18,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 06:57:18,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256628606] [2023-08-27 06:57:18,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:57:18,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:57:18,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:57:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:57:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:57:18,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 190 [2023-08-27 06:57:18,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 2490 transitions, 79537 flow. Second operand has 7 states, 7 states have (on average 78.85714285714286) internal successors, (552), 7 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 06:57:18,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:57:18,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 190 [2023-08-27 06:57:18,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-27 06:57:20,470 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 [2023-08-27 06:57:20,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 06:57:20,498 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2023-08-27 06:57:20,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-27 06:57:20,498 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 76/190 universal loopers) in iteration 68,while PetriNetUnfolder was constructing finite prefix that currently has 30675 conditions, 2349 events (1589/2348 cut-off events. For 180257/180257 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 14293 event pairs, 456 based on Foata normal form. 0/3138 useless extension candidates. Maximal degree in co-relation 30443. Up to 1788 conditions per place.). [2023-08-27 06:57:20,499 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-27 06:57:20,499 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-27 06:57:20,499 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-27 06:57:20,499 INFO L445 BasicCegarLoop]: Path program histogram: [40, 17, 10, 1] [2023-08-27 06:57:20,501 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 06:57:20,501 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 06:57:20,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:57:20 BasicIcfg [2023-08-27 06:57:20,503 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 06:57:20,503 INFO L158 Benchmark]: Toolchain (without parser) took 818237.32ms. Allocated memory was 371.2MB in the beginning and 10.2GB in the end (delta: 9.8GB). Free memory was 347.5MB in the beginning and 8.6GB in the end (delta: -8.2GB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2023-08-27 06:57:20,503 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 371.2MB. Free memory is still 350.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 06:57:20,503 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.51ms. Allocated memory is still 371.2MB. Free memory was 347.5MB in the beginning and 336.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 06:57:20,503 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.40ms. Allocated memory is still 371.2MB. Free memory was 336.9MB in the beginning and 335.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:57:20,503 INFO L158 Benchmark]: Boogie Preprocessor took 26.01ms. Allocated memory is still 371.2MB. Free memory was 335.4MB in the beginning and 333.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:57:20,504 INFO L158 Benchmark]: RCFGBuilder took 259.97ms. Allocated memory is still 371.2MB. Free memory was 333.4MB in the beginning and 319.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 06:57:20,504 INFO L158 Benchmark]: TraceAbstraction took 817711.33ms. Allocated memory was 371.2MB in the beginning and 10.2GB in the end (delta: 9.8GB). Free memory was 318.7MB in the beginning and 8.6GB in the end (delta: -8.3GB). Peak memory consumption was 2.7GB. Max. memory is 16.0GB. [2023-08-27 06:57:20,505 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 371.2MB. Free memory is still 350.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 201.51ms. Allocated memory is still 371.2MB. Free memory was 347.5MB in the beginning and 336.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.40ms. Allocated memory is still 371.2MB. Free memory was 336.9MB in the beginning and 335.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.01ms. Allocated memory is still 371.2MB. Free memory was 335.4MB in the beginning and 333.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 259.97ms. Allocated memory is still 371.2MB. Free memory was 333.4MB in the beginning and 319.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 817711.33ms. Allocated memory was 371.2MB in the beginning and 10.2GB in the end (delta: 9.8GB). Free memory was 318.7MB in the beginning and 8.6GB in the end (delta: -8.3GB). Peak memory consumption was 2.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 98 PlacesBefore, 29 PlacesAfterwards, 95 TransitionsBefore, 22 TransitionsAfterwards, 1518 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 81 TotalNumberOfCompositions, 1467 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1467, independent: 1467, independent conditional: 0, independent unconditional: 1467, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 809, independent: 809, independent conditional: 0, independent unconditional: 809, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1467, independent: 658, independent conditional: 0, independent unconditional: 658, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 809, unknown conditional: 0, unknown unconditional: 809] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 76/190 universal loopers) in iteration 68,while PetriNetUnfolder was constructing finite prefix that currently has 30675 conditions, 2349 events (1589/2348 cut-off events. For 180257/180257 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 14293 event pairs, 456 based on Foata normal form. 0/3138 useless extension candidates. Maximal degree in co-relation 30443. Up to 1788 conditions per place.). - TimeoutResultAtElement [Line: 73]: 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, 76/190 universal loopers) in iteration 68,while PetriNetUnfolder was constructing finite prefix that currently has 30675 conditions, 2349 events (1589/2348 cut-off events. For 180257/180257 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 14293 event pairs, 456 based on Foata normal form. 0/3138 useless extension candidates. Maximal degree in co-relation 30443. Up to 1788 conditions per place.). - TimeoutResultAtElement [Line: 74]: 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, 76/190 universal loopers) in iteration 68,while PetriNetUnfolder was constructing finite prefix that currently has 30675 conditions, 2349 events (1589/2348 cut-off events. For 180257/180257 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 14293 event pairs, 456 based on Foata normal form. 0/3138 useless extension candidates. Maximal degree in co-relation 30443. Up to 1788 conditions per place.). - TimeoutResultAtElement [Line: 72]: 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, 76/190 universal loopers) in iteration 68,while PetriNetUnfolder was constructing finite prefix that currently has 30675 conditions, 2349 events (1589/2348 cut-off events. For 180257/180257 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 14293 event pairs, 456 based on Foata normal form. 0/3138 useless extension candidates. Maximal degree in co-relation 30443. Up to 1788 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 136 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: 817.6s, OverallIterations: 68, TraceHistogramMax: 1, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 796.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3156 SdHoareTripleChecker+Valid, 13.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3156 mSDsluCounter, 2013 SdHoareTripleChecker+Invalid, 10.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1480 mSDsCounter, 187 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25121 IncrementalHoareTripleChecker+Invalid, 25308 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 187 mSolverCounterUnsat, 533 mSDtfsCounter, 25121 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1516 GetRequests, 814 SyntacticMatches, 26 SemanticMatches, 676 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2943 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79537occurred in iteration=67, InterpolantAutomatonStates: 660, 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: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 1799 NumberOfCodeBlocks, 1799 NumberOfCodeBlocksAsserted, 108 NumberOfCheckSat, 2127 ConstructedInterpolants, 0 QuantifiedInterpolants, 12132 SizeOfPredicates, 111 NumberOfNonLiveVariables, 3498 ConjunctsInSsa, 295 ConjunctsInUnsatCore, 112 InterpolantComputations, 53 PerfectInterpolantSequences, 52/111 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