/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 01:28:03,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 01:28:03,821 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 01:28:03,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 01:28:03,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 01:28:03,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 01:28:03,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 01:28:03,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 01:28:03,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 01:28:03,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 01:28:03,862 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 01:28:03,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 01:28:03,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 01:28:03,864 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 01:28:03,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 01:28:03,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 01:28:03,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 01:28:03,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 01:28:03,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 01:28:03,865 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 01:28:03,865 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 01:28:03,866 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 01:28:03,866 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 01:28:03,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 01:28:03,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 01:28:03,867 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 01:28:03,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 01:28:03,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:28:03,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 01:28:03,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 01:28:03,869 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 01:28:03,869 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 01:28:03,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 01:28:03,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 01:28:03,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 01:28:03,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 01:28:04,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 01:28:04,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 01:28:04,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 01:28:04,211 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 01:28:04,212 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 01:28:04,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2023-08-24 01:28:05,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 01:28:05,638 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 01:28:05,639 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2023-08-24 01:28:05,650 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd212dba/85442e83f7d44276b88363913c188ebc/FLAGacae7d86b [2023-08-24 01:28:05,664 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd212dba/85442e83f7d44276b88363913c188ebc [2023-08-24 01:28:05,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 01:28:05,670 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 01:28:05,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 01:28:05,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 01:28:05,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 01:28:05,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:05,678 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b45abf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05, skipping insertion in model container [2023-08-24 01:28:05,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:05,699 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 01:28:05,867 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c[2135,2148] [2023-08-24 01:28:05,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:28:05,885 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 01:28:05,916 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c[2135,2148] [2023-08-24 01:28:05,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:28:05,930 INFO L206 MainTranslator]: Completed translation [2023-08-24 01:28:05,930 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05 WrapperNode [2023-08-24 01:28:05,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 01:28:05,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 01:28:05,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 01:28:05,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 01:28:05,937 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:05,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:05,979 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-08-24 01:28:05,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 01:28:05,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 01:28:05,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 01:28:05,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 01:28:05,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:05,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:05,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:05,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:06,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:06,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:06,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:06,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:06,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 01:28:06,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 01:28:06,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 01:28:06,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 01:28:06,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (1/1) ... [2023-08-24 01:28:06,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:28:06,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:06,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 01:28:06,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 01:28:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 01:28:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 01:28:06,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 01:28:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 01:28:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 01:28:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 01:28:06,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 01:28:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 01:28:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 01:28:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 01:28:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 01:28:06,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 01:28:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 01:28:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 01:28:06,096 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 01:28:06,203 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 01:28:06,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 01:28:06,381 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 01:28:06,388 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 01:28:06,388 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 01:28:06,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:28:06 BoogieIcfgContainer [2023-08-24 01:28:06,390 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 01:28:06,392 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 01:28:06,392 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 01:28:06,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 01:28:06,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:28:05" (1/3) ... [2023-08-24 01:28:06,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3efb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:28:06, skipping insertion in model container [2023-08-24 01:28:06,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:28:05" (2/3) ... [2023-08-24 01:28:06,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3efb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:28:06, skipping insertion in model container [2023-08-24 01:28:06,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:28:06" (3/3) ... [2023-08-24 01:28:06,397 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2023-08-24 01:28:06,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 01:28:06,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 01:28:06,410 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 01:28:06,470 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 01:28:06,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions, 240 flow [2023-08-24 01:28:06,558 INFO L124 PetriNetUnfolderBase]: 7/105 cut-off events. [2023-08-24 01:28:06,559 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:28:06,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 105 events. 7/105 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-08-24 01:28:06,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 108 transitions, 240 flow [2023-08-24 01:28:06,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 95 transitions, 208 flow [2023-08-24 01:28:06,570 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 01:28:06,578 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 95 transitions, 208 flow [2023-08-24 01:28:06,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 95 transitions, 208 flow [2023-08-24 01:28:06,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 95 transitions, 208 flow [2023-08-24 01:28:06,608 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-08-24 01:28:06,608 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:28:06,609 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 78 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. [2023-08-24 01:28:06,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 1518 [2023-08-24 01:28:09,008 INFO L134 LiptonReduction]: Checked pairs total: 1429 [2023-08-24 01:28:09,009 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-24 01:28:09,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 01:28:09,026 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;@7c6313a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 01:28:09,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 01:28:09,033 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 01:28:09,033 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-08-24 01:28:09,033 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:28:09,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:09,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:09,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:09,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:09,038 INFO L85 PathProgramCache]: Analyzing trace with hash -146388736, now seen corresponding path program 1 times [2023-08-24 01:28:09,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:09,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259800976] [2023-08-24 01:28:09,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:09,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:09,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:09,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259800976] [2023-08-24 01:28:09,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259800976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:28:09,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:28:09,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 01:28:09,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266578379] [2023-08-24 01:28:09,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:28:09,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:28:09,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:09,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:28:09,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:28:09,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 187 [2023-08-24 01:28:09,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:09,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:09,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 187 [2023-08-24 01:28:09,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:09,774 INFO L124 PetriNetUnfolderBase]: 359/506 cut-off events. [2023-08-24 01:28:09,774 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-24 01:28:09,778 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 1596 event pairs, 39 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2023-08-24 01:28:09,782 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-08-24 01:28:09,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 179 flow [2023-08-24 01:28:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:28:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:28:09,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2023-08-24 01:28:09,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-08-24 01:28:09,801 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2023-08-24 01:28:09,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2023-08-24 01:28:09,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:09,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2023-08-24 01:28:09,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:09,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:09,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:09,816 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 306 transitions. [2023-08-24 01:28:09,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 179 flow [2023-08-24 01:28:09,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 01:28:09,820 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2023-08-24 01:28:09,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, 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} [2023-08-24 01:28:09,824 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-08-24 01:28:09,824 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2023-08-24 01:28:09,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:09,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:09,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:09,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 01:28:09,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:09,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:09,825 INFO L85 PathProgramCache]: Analyzing trace with hash -448044843, now seen corresponding path program 1 times [2023-08-24 01:28:09,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:09,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053783502] [2023-08-24 01:28:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:09,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:09,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:09,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053783502] [2023-08-24 01:28:09,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053783502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:28:09,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:28:09,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 01:28:10,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024216576] [2023-08-24 01:28:10,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:28:10,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:28:10,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:10,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:28:10,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:28:10,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:28:10,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:10,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:28:10,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:10,154 INFO L124 PetriNetUnfolderBase]: 478/727 cut-off events. [2023-08-24 01:28:10,155 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2023-08-24 01:28:10,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 727 events. 478/727 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2828 event pairs, 119 based on Foata normal form. 56/777 useless extension candidates. Maximal degree in co-relation 381. Up to 391 conditions per place. [2023-08-24 01:28:10,159 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 47 selfloop transitions, 6 changer transitions 2/56 dead transitions. [2023-08-24 01:28:10,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 56 transitions, 269 flow [2023-08-24 01:28:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:28:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:28:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 459 transitions. [2023-08-24 01:28:10,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2023-08-24 01:28:10,161 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 459 transitions. [2023-08-24 01:28:10,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 459 transitions. [2023-08-24 01:28:10,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:10,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 459 transitions. [2023-08-24 01:28:10,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,167 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,167 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 5 states and 459 transitions. [2023-08-24 01:28:10,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 56 transitions, 269 flow [2023-08-24 01:28:10,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 56 transitions, 263 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 01:28:10,170 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 127 flow [2023-08-24 01:28:10,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, 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=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=32, PETRI_TRANSITIONS=29} [2023-08-24 01:28:10,171 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-08-24 01:28:10,171 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 127 flow [2023-08-24 01:28:10,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:10,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:10,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 01:28:10,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:10,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:10,177 INFO L85 PathProgramCache]: Analyzing trace with hash 807203915, now seen corresponding path program 2 times [2023-08-24 01:28:10,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:10,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367395044] [2023-08-24 01:28:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:10,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:10,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:10,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367395044] [2023-08-24 01:28:10,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367395044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:28:10,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:28:10,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:28:10,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179038425] [2023-08-24 01:28:10,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:28:10,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:28:10,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:10,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:28:10,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:28:10,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-08-24 01:28:10,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 29 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:10,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-08-24 01:28:10,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:10,380 INFO L124 PetriNetUnfolderBase]: 456/690 cut-off events. [2023-08-24 01:28:10,380 INFO L125 PetriNetUnfolderBase]: For 1030/1160 co-relation queries the response was YES. [2023-08-24 01:28:10,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 690 events. 456/690 cut-off events. For 1030/1160 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2697 event pairs, 80 based on Foata normal form. 134/803 useless extension candidates. Maximal degree in co-relation 629. Up to 440 conditions per place. [2023-08-24 01:28:10,385 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 42 selfloop transitions, 5 changer transitions 6/56 dead transitions. [2023-08-24 01:28:10,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 56 transitions, 333 flow [2023-08-24 01:28:10,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:28:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:28:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2023-08-24 01:28:10,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187165775401069 [2023-08-24 01:28:10,387 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2023-08-24 01:28:10,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2023-08-24 01:28:10,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:10,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2023-08-24 01:28:10,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,390 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,390 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 127 flow. Second operand 4 states and 388 transitions. [2023-08-24 01:28:10,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 56 transitions, 333 flow [2023-08-24 01:28:10,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 56 transitions, 323 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-24 01:28:10,393 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 153 flow [2023-08-24 01:28:10,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-24 01:28:10,394 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-08-24 01:28:10,394 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 153 flow [2023-08-24 01:28:10,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:10,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:10,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 01:28:10,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:10,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:10,396 INFO L85 PathProgramCache]: Analyzing trace with hash -224015934, now seen corresponding path program 1 times [2023-08-24 01:28:10,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:10,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444117829] [2023-08-24 01:28:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:10,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:10,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444117829] [2023-08-24 01:28:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444117829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:28:10,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:28:10,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 01:28:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479345082] [2023-08-24 01:28:10,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:28:10,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:28:10,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:28:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:28:10,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:28:10,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:10,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:28:10,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:10,699 INFO L124 PetriNetUnfolderBase]: 607/975 cut-off events. [2023-08-24 01:28:10,699 INFO L125 PetriNetUnfolderBase]: For 2613/2717 co-relation queries the response was YES. [2023-08-24 01:28:10,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3310 conditions, 975 events. 607/975 cut-off events. For 2613/2717 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4216 event pairs, 161 based on Foata normal form. 164/1127 useless extension candidates. Maximal degree in co-relation 1700. Up to 527 conditions per place. [2023-08-24 01:28:10,705 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 54 selfloop transitions, 8 changer transitions 6/70 dead transitions. [2023-08-24 01:28:10,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 70 transitions, 450 flow [2023-08-24 01:28:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:28:10,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:28:10,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2023-08-24 01:28:10,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49518716577540106 [2023-08-24 01:28:10,707 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2023-08-24 01:28:10,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2023-08-24 01:28:10,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:10,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2023-08-24 01:28:10,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.6) internal successors, (463), 5 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,711 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 153 flow. Second operand 5 states and 463 transitions. [2023-08-24 01:28:10,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 70 transitions, 450 flow [2023-08-24 01:28:10,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 70 transitions, 441 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 01:28:10,715 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 226 flow [2023-08-24 01:28:10,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-24 01:28:10,716 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-08-24 01:28:10,716 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 226 flow [2023-08-24 01:28:10,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:10,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:10,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 01:28:10,717 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:10,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:10,717 INFO L85 PathProgramCache]: Analyzing trace with hash -336778223, now seen corresponding path program 3 times [2023-08-24 01:28:10,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:10,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758330252] [2023-08-24 01:28:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:10,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:10,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:10,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758330252] [2023-08-24 01:28:10,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758330252] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:28:10,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:28:10,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 01:28:10,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172049308] [2023-08-24 01:28:10,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:28:10,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:28:10,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:10,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:28:10,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:28:10,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:28:10,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:10,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:28:10,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:10,982 INFO L124 PetriNetUnfolderBase]: 860/1318 cut-off events. [2023-08-24 01:28:10,982 INFO L125 PetriNetUnfolderBase]: For 4981/5236 co-relation queries the response was YES. [2023-08-24 01:28:10,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5563 conditions, 1318 events. 860/1318 cut-off events. For 4981/5236 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5909 event pairs, 315 based on Foata normal form. 169/1449 useless extension candidates. Maximal degree in co-relation 2235. Up to 941 conditions per place. [2023-08-24 01:28:10,990 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 50 selfloop transitions, 15 changer transitions 7/74 dead transitions. [2023-08-24 01:28:10,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 74 transitions, 672 flow [2023-08-24 01:28:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:28:10,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:28:10,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-24 01:28:10,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48128342245989303 [2023-08-24 01:28:10,993 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-24 01:28:10,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-24 01:28:10,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:10,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-24 01:28:10,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:10,996 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 226 flow. Second operand 5 states and 450 transitions. [2023-08-24 01:28:10,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 74 transitions, 672 flow [2023-08-24 01:28:11,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 74 transitions, 650 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 01:28:11,002 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 398 flow [2023-08-24 01:28:11,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-08-24 01:28:11,003 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-08-24 01:28:11,003 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 398 flow [2023-08-24 01:28:11,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:11,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:11,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 01:28:11,004 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:11,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash 395655605, now seen corresponding path program 4 times [2023-08-24 01:28:11,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:11,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063077804] [2023-08-24 01:28:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:11,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:11,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063077804] [2023-08-24 01:28:11,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063077804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:28:11,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:28:11,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 01:28:11,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006411005] [2023-08-24 01:28:11,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:28:11,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:28:11,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:11,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:28:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:28:11,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:28:11,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 398 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:11,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:28:11,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:11,266 INFO L124 PetriNetUnfolderBase]: 875/1342 cut-off events. [2023-08-24 01:28:11,267 INFO L125 PetriNetUnfolderBase]: For 7081/7330 co-relation queries the response was YES. [2023-08-24 01:28:11,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6556 conditions, 1342 events. 875/1342 cut-off events. For 7081/7330 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6049 event pairs, 336 based on Foata normal form. 165/1471 useless extension candidates. Maximal degree in co-relation 2467. Up to 1080 conditions per place. [2023-08-24 01:28:11,276 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 51 selfloop transitions, 21 changer transitions 4/78 dead transitions. [2023-08-24 01:28:11,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 78 transitions, 826 flow [2023-08-24 01:28:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:28:11,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:28:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-24 01:28:11,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48128342245989303 [2023-08-24 01:28:11,278 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-24 01:28:11,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-24 01:28:11,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:11,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-24 01:28:11,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,281 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,281 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 398 flow. Second operand 5 states and 450 transitions. [2023-08-24 01:28:11,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 78 transitions, 826 flow [2023-08-24 01:28:11,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 780 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-08-24 01:28:11,291 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 571 flow [2023-08-24 01:28:11,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=571, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2023-08-24 01:28:11,292 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2023-08-24 01:28:11,292 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 571 flow [2023-08-24 01:28:11,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:11,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:11,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 01:28:11,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:11,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:11,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1347830343, now seen corresponding path program 5 times [2023-08-24 01:28:11,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:11,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317533169] [2023-08-24 01:28:11,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:11,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:11,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:11,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317533169] [2023-08-24 01:28:11,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317533169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:28:11,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:28:11,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 01:28:11,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978087315] [2023-08-24 01:28:11,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:28:11,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:28:11,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:11,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:28:11,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:28:11,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:28:11,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 571 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:11,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:28:11,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:11,580 INFO L124 PetriNetUnfolderBase]: 887/1406 cut-off events. [2023-08-24 01:28:11,580 INFO L125 PetriNetUnfolderBase]: For 9184/9463 co-relation queries the response was YES. [2023-08-24 01:28:11,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7183 conditions, 1406 events. 887/1406 cut-off events. For 9184/9463 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6732 event pairs, 319 based on Foata normal form. 196/1559 useless extension candidates. Maximal degree in co-relation 4325. Up to 824 conditions per place. [2023-08-24 01:28:11,611 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 62 selfloop transitions, 18 changer transitions 5/87 dead transitions. [2023-08-24 01:28:11,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 87 transitions, 938 flow [2023-08-24 01:28:11,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:28:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:28:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2023-08-24 01:28:11,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48663101604278075 [2023-08-24 01:28:11,613 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2023-08-24 01:28:11,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2023-08-24 01:28:11,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:11,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2023-08-24 01:28:11,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,616 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,616 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 571 flow. Second operand 5 states and 455 transitions. [2023-08-24 01:28:11,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 87 transitions, 938 flow [2023-08-24 01:28:11,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 87 transitions, 890 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-24 01:28:11,631 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 620 flow [2023-08-24 01:28:11,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=620, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-08-24 01:28:11,632 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2023-08-24 01:28:11,632 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 620 flow [2023-08-24 01:28:11,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:11,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:11,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 01:28:11,636 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:11,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:11,637 INFO L85 PathProgramCache]: Analyzing trace with hash 227849201, now seen corresponding path program 1 times [2023-08-24 01:28:11,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:11,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781704939] [2023-08-24 01:28:11,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:11,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:11,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:11,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:11,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781704939] [2023-08-24 01:28:11,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781704939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:28:11,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:28:11,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:28:11,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867300139] [2023-08-24 01:28:11,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:28:11,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:28:11,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:11,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:28:11,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:28:11,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-08-24 01:28:11,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 620 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:11,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-08-24 01:28:11,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:11,904 INFO L124 PetriNetUnfolderBase]: 882/1411 cut-off events. [2023-08-24 01:28:11,904 INFO L125 PetriNetUnfolderBase]: For 12452/12812 co-relation queries the response was YES. [2023-08-24 01:28:11,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7726 conditions, 1411 events. 882/1411 cut-off events. For 12452/12812 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6869 event pairs, 304 based on Foata normal form. 307/1657 useless extension candidates. Maximal degree in co-relation 4154. Up to 1017 conditions per place. [2023-08-24 01:28:11,915 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 56 selfloop transitions, 12 changer transitions 23/97 dead transitions. [2023-08-24 01:28:11,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 1133 flow [2023-08-24 01:28:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:28:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:28:11,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2023-08-24 01:28:11,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516042780748663 [2023-08-24 01:28:11,917 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 386 transitions. [2023-08-24 01:28:11,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 386 transitions. [2023-08-24 01:28:11,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:11,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 386 transitions. [2023-08-24 01:28:11,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,920 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,920 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 620 flow. Second operand 4 states and 386 transitions. [2023-08-24 01:28:11,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 1133 flow [2023-08-24 01:28:11,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 1074 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-24 01:28:11,945 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 647 flow [2023-08-24 01:28:11,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=647, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-08-24 01:28:11,945 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2023-08-24 01:28:11,946 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 647 flow [2023-08-24 01:28:11,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:11,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:11,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:11,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 01:28:11,947 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:11,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:11,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1338267923, now seen corresponding path program 6 times [2023-08-24 01:28:11,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:11,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440422178] [2023-08-24 01:28:11,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:11,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:12,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:12,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440422178] [2023-08-24 01:28:12,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440422178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:28:12,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:28:12,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:28:12,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863055032] [2023-08-24 01:28:12,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:28:12,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:28:12,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:12,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:28:12,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:28:12,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-08-24 01:28:12,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 647 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:12,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-08-24 01:28:12,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:12,216 INFO L124 PetriNetUnfolderBase]: 1002/1602 cut-off events. [2023-08-24 01:28:12,216 INFO L125 PetriNetUnfolderBase]: For 13173/13486 co-relation queries the response was YES. [2023-08-24 01:28:12,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8750 conditions, 1602 events. 1002/1602 cut-off events. For 13173/13486 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7751 event pairs, 308 based on Foata normal form. 237/1758 useless extension candidates. Maximal degree in co-relation 4803. Up to 1150 conditions per place. [2023-08-24 01:28:12,229 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 60 selfloop transitions, 9 changer transitions 19/96 dead transitions. [2023-08-24 01:28:12,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 96 transitions, 1122 flow [2023-08-24 01:28:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:28:12,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:28:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2023-08-24 01:28:12,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187165775401069 [2023-08-24 01:28:12,231 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2023-08-24 01:28:12,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2023-08-24 01:28:12,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:12,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2023-08-24 01:28:12,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,234 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,234 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 647 flow. Second operand 4 states and 388 transitions. [2023-08-24 01:28:12,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 96 transitions, 1122 flow [2023-08-24 01:28:12,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 1075 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-08-24 01:28:12,247 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 645 flow [2023-08-24 01:28:12,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=645, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2023-08-24 01:28:12,247 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2023-08-24 01:28:12,248 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 645 flow [2023-08-24 01:28:12,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:12,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:12,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 01:28:12,248 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:12,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:12,249 INFO L85 PathProgramCache]: Analyzing trace with hash -963156035, now seen corresponding path program 7 times [2023-08-24 01:28:12,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:12,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152281512] [2023-08-24 01:28:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:12,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:12,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:12,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:12,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152281512] [2023-08-24 01:28:12,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152281512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:28:12,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:28:12,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:28:12,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45535755] [2023-08-24 01:28:12,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:28:12,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:28:12,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:12,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:28:12,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:28:12,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-08-24 01:28:12,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 645 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:12,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-08-24 01:28:12,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:12,535 INFO L124 PetriNetUnfolderBase]: 992/1546 cut-off events. [2023-08-24 01:28:12,535 INFO L125 PetriNetUnfolderBase]: For 15077/15619 co-relation queries the response was YES. [2023-08-24 01:28:12,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8890 conditions, 1546 events. 992/1546 cut-off events. For 15077/15619 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7285 event pairs, 323 based on Foata normal form. 309/1773 useless extension candidates. Maximal degree in co-relation 5243. Up to 1072 conditions per place. [2023-08-24 01:28:12,549 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 65 selfloop transitions, 18 changer transitions 11/102 dead transitions. [2023-08-24 01:28:12,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 1307 flow [2023-08-24 01:28:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:28:12,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:28:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 382 transitions. [2023-08-24 01:28:12,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106951871657754 [2023-08-24 01:28:12,551 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 382 transitions. [2023-08-24 01:28:12,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 382 transitions. [2023-08-24 01:28:12,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:12,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 382 transitions. [2023-08-24 01:28:12,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,554 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,554 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 645 flow. Second operand 4 states and 382 transitions. [2023-08-24 01:28:12,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 1307 flow [2023-08-24 01:28:12,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 102 transitions, 1272 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-08-24 01:28:12,567 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 902 flow [2023-08-24 01:28:12,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=902, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2023-08-24 01:28:12,568 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-08-24 01:28:12,568 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 902 flow [2023-08-24 01:28:12,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:12,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:12,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 01:28:12,569 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:12,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:12,570 INFO L85 PathProgramCache]: Analyzing trace with hash -963570300, now seen corresponding path program 2 times [2023-08-24 01:28:12,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:12,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192665613] [2023-08-24 01:28:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:12,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:12,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:12,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192665613] [2023-08-24 01:28:12,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192665613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:28:12,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:28:12,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:28:12,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71384340] [2023-08-24 01:28:12,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:28:12,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:28:12,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:12,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:28:12,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:28:12,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-08-24 01:28:12,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 902 flow. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:12,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-08-24 01:28:12,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:12,830 INFO L124 PetriNetUnfolderBase]: 905/1344 cut-off events. [2023-08-24 01:28:12,830 INFO L125 PetriNetUnfolderBase]: For 15668/16047 co-relation queries the response was YES. [2023-08-24 01:28:12,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8587 conditions, 1344 events. 905/1344 cut-off events. For 15668/16047 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5658 event pairs, 240 based on Foata normal form. 215/1515 useless extension candidates. Maximal degree in co-relation 5458. Up to 941 conditions per place. [2023-08-24 01:28:12,841 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 54 selfloop transitions, 36 changer transitions 9/105 dead transitions. [2023-08-24 01:28:12,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 1450 flow [2023-08-24 01:28:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:28:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:28:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2023-08-24 01:28:12,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080213903743316 [2023-08-24 01:28:12,843 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2023-08-24 01:28:12,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2023-08-24 01:28:12,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:12,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2023-08-24 01:28:12,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,846 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,846 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 902 flow. Second operand 4 states and 380 transitions. [2023-08-24 01:28:12,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 1450 flow [2023-08-24 01:28:12,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 105 transitions, 1364 flow, removed 30 selfloop flow, removed 3 redundant places. [2023-08-24 01:28:12,858 INFO L231 Difference]: Finished difference. Result has 64 places, 78 transitions, 1074 flow [2023-08-24 01:28:12,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1074, PETRI_PLACES=64, PETRI_TRANSITIONS=78} [2023-08-24 01:28:12,859 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-08-24 01:28:12,859 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 78 transitions, 1074 flow [2023-08-24 01:28:12,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:12,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:12,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:12,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 01:28:12,860 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:12,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:12,860 INFO L85 PathProgramCache]: Analyzing trace with hash -646001861, now seen corresponding path program 1 times [2023-08-24 01:28:12,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:12,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303662114] [2023-08-24 01:28:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:12,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:28:12,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303662114] [2023-08-24 01:28:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303662114] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269682040] [2023-08-24 01:28:12,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:12,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:12,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:12,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:28:12,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 01:28:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:13,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 01:28:13,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:13,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:13,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269682040] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:13,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:13,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2023-08-24 01:28:13,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123308511] [2023-08-24 01:28:13,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:13,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 01:28:13,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:13,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 01:28:13,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-24 01:28:13,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 01:28:13,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 78 transitions, 1074 flow. Second operand has 9 states, 9 states have (on average 80.77777777777777) internal successors, (727), 9 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:13,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:13,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 01:28:13,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:13,571 INFO L124 PetriNetUnfolderBase]: 1164/1671 cut-off events. [2023-08-24 01:28:13,571 INFO L125 PetriNetUnfolderBase]: For 16650/16650 co-relation queries the response was YES. [2023-08-24 01:28:13,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11200 conditions, 1671 events. 1164/1671 cut-off events. For 16650/16650 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6525 event pairs, 211 based on Foata normal form. 48/1719 useless extension candidates. Maximal degree in co-relation 7832. Up to 863 conditions per place. [2023-08-24 01:28:13,590 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 84 selfloop transitions, 81 changer transitions 2/167 dead transitions. [2023-08-24 01:28:13,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 167 transitions, 2349 flow [2023-08-24 01:28:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 01:28:13,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 01:28:13,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 862 transitions. [2023-08-24 01:28:13,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46096256684491976 [2023-08-24 01:28:13,593 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 862 transitions. [2023-08-24 01:28:13,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 862 transitions. [2023-08-24 01:28:13,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:13,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 862 transitions. [2023-08-24 01:28:13,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 86.2) internal successors, (862), 10 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:13,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 187.0) internal successors, (2057), 11 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:13,598 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 187.0) internal successors, (2057), 11 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:13,599 INFO L175 Difference]: Start difference. First operand has 64 places, 78 transitions, 1074 flow. Second operand 10 states and 862 transitions. [2023-08-24 01:28:13,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 167 transitions, 2349 flow [2023-08-24 01:28:13,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 167 transitions, 2160 flow, removed 80 selfloop flow, removed 2 redundant places. [2023-08-24 01:28:13,619 INFO L231 Difference]: Finished difference. Result has 73 places, 116 transitions, 1793 flow [2023-08-24 01:28:13,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1793, PETRI_PLACES=73, PETRI_TRANSITIONS=116} [2023-08-24 01:28:13,621 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2023-08-24 01:28:13,621 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 116 transitions, 1793 flow [2023-08-24 01:28:13,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.77777777777777) internal successors, (727), 9 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:13,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:13,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:13,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-24 01:28:13,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-24 01:28:13,831 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:13,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:13,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1069550080, now seen corresponding path program 1 times [2023-08-24 01:28:13,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:13,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345409851] [2023-08-24 01:28:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:13,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:14,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:14,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345409851] [2023-08-24 01:28:14,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345409851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:14,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991130768] [2023-08-24 01:28:14,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:14,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:14,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:14,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:28:14,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 01:28:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:14,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 01:28:14,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:14,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:14,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:15,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:15,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991130768] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:15,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:15,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-24 01:28:15,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268349535] [2023-08-24 01:28:15,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:15,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:28:15,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:15,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:28:15,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-24 01:28:15,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 01:28:15,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 116 transitions, 1793 flow. Second operand has 11 states, 11 states have (on average 90.27272727272727) internal successors, (993), 11 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:15,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:15,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 01:28:15,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:15,424 INFO L124 PetriNetUnfolderBase]: 1455/2077 cut-off events. [2023-08-24 01:28:15,424 INFO L125 PetriNetUnfolderBase]: For 28720/29436 co-relation queries the response was YES. [2023-08-24 01:28:15,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15083 conditions, 2077 events. 1455/2077 cut-off events. For 28720/29436 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8348 event pairs, 48 based on Foata normal form. 161/2120 useless extension candidates. Maximal degree in co-relation 13698. Up to 1471 conditions per place. [2023-08-24 01:28:15,444 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 134 selfloop transitions, 61 changer transitions 2/213 dead transitions. [2023-08-24 01:28:15,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 213 transitions, 3019 flow [2023-08-24 01:28:15,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:28:15,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:28:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 876 transitions. [2023-08-24 01:28:15,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204991087344029 [2023-08-24 01:28:15,447 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 876 transitions. [2023-08-24 01:28:15,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 876 transitions. [2023-08-24 01:28:15,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:15,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 876 transitions. [2023-08-24 01:28:15,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.33333333333333) internal successors, (876), 9 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) [2023-08-24 01:28:15,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:15,452 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:15,452 INFO L175 Difference]: Start difference. First operand has 73 places, 116 transitions, 1793 flow. Second operand 9 states and 876 transitions. [2023-08-24 01:28:15,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 213 transitions, 3019 flow [2023-08-24 01:28:15,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 213 transitions, 2611 flow, removed 113 selfloop flow, removed 6 redundant places. [2023-08-24 01:28:15,479 INFO L231 Difference]: Finished difference. Result has 78 places, 153 transitions, 2255 flow [2023-08-24 01:28:15,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2255, PETRI_PLACES=78, PETRI_TRANSITIONS=153} [2023-08-24 01:28:15,480 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2023-08-24 01:28:15,480 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 153 transitions, 2255 flow [2023-08-24 01:28:15,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 90.27272727272727) internal successors, (993), 11 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:15,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:15,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:15,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 01:28:15,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-24 01:28:15,684 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:15,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:15,684 INFO L85 PathProgramCache]: Analyzing trace with hash 838882518, now seen corresponding path program 2 times [2023-08-24 01:28:15,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:15,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341667522] [2023-08-24 01:28:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:15,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:15,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:15,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341667522] [2023-08-24 01:28:15,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341667522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:15,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862051419] [2023-08-24 01:28:15,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:28:15,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:15,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:15,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:28:15,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 01:28:16,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:28:16,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:28:16,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 01:28:16,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:16,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:17,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862051419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:17,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:17,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-24 01:28:17,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264114696] [2023-08-24 01:28:17,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:17,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:28:17,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:17,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:28:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-24 01:28:17,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 01:28:17,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 153 transitions, 2255 flow. Second operand has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:17,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:17,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 01:28:17,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:17,600 INFO L124 PetriNetUnfolderBase]: 1789/2567 cut-off events. [2023-08-24 01:28:17,600 INFO L125 PetriNetUnfolderBase]: For 31257/31966 co-relation queries the response was YES. [2023-08-24 01:28:17,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17639 conditions, 2567 events. 1789/2567 cut-off events. For 31257/31966 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10782 event pairs, 188 based on Foata normal form. 143/2572 useless extension candidates. Maximal degree in co-relation 16924. Up to 1995 conditions per place. [2023-08-24 01:28:17,622 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 149 selfloop transitions, 61 changer transitions 2/228 dead transitions. [2023-08-24 01:28:17,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 228 transitions, 3200 flow [2023-08-24 01:28:17,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:28:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:28:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 872 transitions. [2023-08-24 01:28:17,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181224004753416 [2023-08-24 01:28:17,625 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 872 transitions. [2023-08-24 01:28:17,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 872 transitions. [2023-08-24 01:28:17,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:17,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 872 transitions. [2023-08-24 01:28:17,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.88888888888889) internal successors, (872), 9 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) [2023-08-24 01:28:17,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:17,631 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:17,631 INFO L175 Difference]: Start difference. First operand has 78 places, 153 transitions, 2255 flow. Second operand 9 states and 872 transitions. [2023-08-24 01:28:17,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 228 transitions, 3200 flow [2023-08-24 01:28:17,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 228 transitions, 2942 flow, removed 117 selfloop flow, removed 1 redundant places. [2023-08-24 01:28:17,663 INFO L231 Difference]: Finished difference. Result has 88 places, 172 transitions, 2503 flow [2023-08-24 01:28:17,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2503, PETRI_PLACES=88, PETRI_TRANSITIONS=172} [2023-08-24 01:28:17,664 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2023-08-24 01:28:17,664 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 172 transitions, 2503 flow [2023-08-24 01:28:17,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:17,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:17,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:17,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-24 01:28:17,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:17,871 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:17,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:17,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1234219720, now seen corresponding path program 3 times [2023-08-24 01:28:17,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:17,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212576997] [2023-08-24 01:28:17,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:17,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:18,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:18,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212576997] [2023-08-24 01:28:18,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212576997] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:18,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171078893] [2023-08-24 01:28:18,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:28:18,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:18,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:18,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:28:18,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 01:28:18,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 01:28:18,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:28:18,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 01:28:18,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:18,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:18,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171078893] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:18,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:18,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-24 01:28:18,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700410028] [2023-08-24 01:28:18,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:18,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:28:18,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:18,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:28:18,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-24 01:28:18,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 01:28:18,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 172 transitions, 2503 flow. Second operand has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:18,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:18,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 01:28:18,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:19,243 INFO L124 PetriNetUnfolderBase]: 2249/3233 cut-off events. [2023-08-24 01:28:19,243 INFO L125 PetriNetUnfolderBase]: For 39322/40111 co-relation queries the response was YES. [2023-08-24 01:28:19,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21467 conditions, 3233 events. 2249/3233 cut-off events. For 39322/40111 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 14222 event pairs, 350 based on Foata normal form. 177/3252 useless extension candidates. Maximal degree in co-relation 20978. Up to 2645 conditions per place. [2023-08-24 01:28:19,277 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 186 selfloop transitions, 64 changer transitions 2/268 dead transitions. [2023-08-24 01:28:19,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 268 transitions, 3832 flow [2023-08-24 01:28:19,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:28:19,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:28:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 872 transitions. [2023-08-24 01:28:19,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181224004753416 [2023-08-24 01:28:19,280 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 872 transitions. [2023-08-24 01:28:19,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 872 transitions. [2023-08-24 01:28:19,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:19,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 872 transitions. [2023-08-24 01:28:19,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.88888888888889) internal successors, (872), 9 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) [2023-08-24 01:28:19,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:19,285 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:19,285 INFO L175 Difference]: Start difference. First operand has 88 places, 172 transitions, 2503 flow. Second operand 9 states and 872 transitions. [2023-08-24 01:28:19,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 268 transitions, 3832 flow [2023-08-24 01:28:19,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 268 transitions, 3570 flow, removed 106 selfloop flow, removed 2 redundant places. [2023-08-24 01:28:19,323 INFO L231 Difference]: Finished difference. Result has 98 places, 212 transitions, 3114 flow [2023-08-24 01:28:19,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3114, PETRI_PLACES=98, PETRI_TRANSITIONS=212} [2023-08-24 01:28:19,323 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2023-08-24 01:28:19,323 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 212 transitions, 3114 flow [2023-08-24 01:28:19,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:19,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:19,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:19,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 01:28:19,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 01:28:19,533 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:19,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:19,533 INFO L85 PathProgramCache]: Analyzing trace with hash 815568354, now seen corresponding path program 4 times [2023-08-24 01:28:19,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:19,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050779130] [2023-08-24 01:28:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:19,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:19,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:19,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050779130] [2023-08-24 01:28:19,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050779130] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:19,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599693036] [2023-08-24 01:28:19,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:28:19,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:19,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:19,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:28:19,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 01:28:19,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:28:19,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:28:19,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 01:28:19,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:19,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:20,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599693036] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:20,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:20,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-24 01:28:20,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841748089] [2023-08-24 01:28:20,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:20,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:28:20,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:20,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:28:20,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-24 01:28:20,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 01:28:20,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 212 transitions, 3114 flow. Second operand has 10 states, 10 states have (on average 90.7) internal successors, (907), 10 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:20,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:20,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 01:28:20,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:20,975 INFO L124 PetriNetUnfolderBase]: 2557/3685 cut-off events. [2023-08-24 01:28:20,975 INFO L125 PetriNetUnfolderBase]: For 45098/45929 co-relation queries the response was YES. [2023-08-24 01:28:20,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24318 conditions, 3685 events. 2557/3685 cut-off events. For 45098/45929 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 16654 event pairs, 494 based on Foata normal form. 175/3696 useless extension candidates. Maximal degree in co-relation 23816. Up to 3161 conditions per place. [2023-08-24 01:28:21,012 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 199 selfloop transitions, 64 changer transitions 2/281 dead transitions. [2023-08-24 01:28:21,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 281 transitions, 4204 flow [2023-08-24 01:28:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:28:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:28:21,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 866 transitions. [2023-08-24 01:28:21,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145573380867499 [2023-08-24 01:28:21,016 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 866 transitions. [2023-08-24 01:28:21,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 866 transitions. [2023-08-24 01:28:21,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:21,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 866 transitions. [2023-08-24 01:28:21,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.22222222222223) internal successors, (866), 9 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:21,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:21,022 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:21,022 INFO L175 Difference]: Start difference. First operand has 98 places, 212 transitions, 3114 flow. Second operand 9 states and 866 transitions. [2023-08-24 01:28:21,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 281 transitions, 4204 flow [2023-08-24 01:28:21,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 281 transitions, 3864 flow, removed 158 selfloop flow, removed 1 redundant places. [2023-08-24 01:28:21,080 INFO L231 Difference]: Finished difference. Result has 108 places, 231 transitions, 3330 flow [2023-08-24 01:28:21,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3330, PETRI_PLACES=108, PETRI_TRANSITIONS=231} [2023-08-24 01:28:21,081 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2023-08-24 01:28:21,081 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 231 transitions, 3330 flow [2023-08-24 01:28:21,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.7) internal successors, (907), 10 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:21,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:21,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:21,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 01:28:21,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-24 01:28:21,290 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:21,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2005633492, now seen corresponding path program 5 times [2023-08-24 01:28:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:21,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055074376] [2023-08-24 01:28:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:21,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:21,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:21,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055074376] [2023-08-24 01:28:21,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055074376] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:21,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47976613] [2023-08-24 01:28:21,504 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 01:28:21,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:21,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:21,505 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:28:21,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 01:28:21,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 01:28:21,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:28:21,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 01:28:21,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:21,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:28:24,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47976613] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:24,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:24,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-24 01:28:24,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774805326] [2023-08-24 01:28:24,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:24,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:28:24,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:24,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:28:24,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-24 01:28:24,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 01:28:24,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 231 transitions, 3330 flow. Second operand has 11 states, 11 states have (on average 90.45454545454545) internal successors, (995), 11 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:24,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:24,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 01:28:24,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:24,754 INFO L124 PetriNetUnfolderBase]: 2931/4229 cut-off events. [2023-08-24 01:28:24,754 INFO L125 PetriNetUnfolderBase]: For 51073/51960 co-relation queries the response was YES. [2023-08-24 01:28:24,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27354 conditions, 4229 events. 2931/4229 cut-off events. For 51073/51960 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 19673 event pairs, 614 based on Foata normal form. 183/4234 useless extension candidates. Maximal degree in co-relation 26810. Up to 3717 conditions per place. [2023-08-24 01:28:24,790 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 237 selfloop transitions, 56 changer transitions 2/311 dead transitions. [2023-08-24 01:28:24,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 311 transitions, 4730 flow [2023-08-24 01:28:24,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:28:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:28:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 864 transitions. [2023-08-24 01:28:24,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133689839572193 [2023-08-24 01:28:24,793 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 864 transitions. [2023-08-24 01:28:24,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 864 transitions. [2023-08-24 01:28:24,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:24,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 864 transitions. [2023-08-24 01:28:24,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.0) internal successors, (864), 9 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) [2023-08-24 01:28:24,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:24,799 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:24,799 INFO L175 Difference]: Start difference. First operand has 108 places, 231 transitions, 3330 flow. Second operand 9 states and 864 transitions. [2023-08-24 01:28:24,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 311 transitions, 4730 flow [2023-08-24 01:28:24,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 311 transitions, 4417 flow, removed 131 selfloop flow, removed 2 redundant places. [2023-08-24 01:28:24,860 INFO L231 Difference]: Finished difference. Result has 118 places, 263 transitions, 3841 flow [2023-08-24 01:28:24,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3841, PETRI_PLACES=118, PETRI_TRANSITIONS=263} [2023-08-24 01:28:24,861 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2023-08-24 01:28:24,861 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 263 transitions, 3841 flow [2023-08-24 01:28:24,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 90.45454545454545) internal successors, (995), 11 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:24,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:24,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:24,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-24 01:28:25,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-24 01:28:25,068 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:25,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1790587700, now seen corresponding path program 6 times [2023-08-24 01:28:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252641773] [2023-08-24 01:28:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:25,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:25,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252641773] [2023-08-24 01:28:25,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252641773] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:25,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549463197] [2023-08-24 01:28:25,273 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 01:28:25,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:25,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:25,286 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:28:25,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 01:28:25,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-24 01:28:25,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:28:25,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 01:28:25,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:25,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:27,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549463197] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:27,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:27,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-24 01:28:27,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394192398] [2023-08-24 01:28:27,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:27,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:28:27,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:27,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:28:27,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-24 01:28:27,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 01:28:27,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 263 transitions, 3841 flow. Second operand has 11 states, 11 states have (on average 89.9090909090909) internal successors, (989), 11 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:27,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:27,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 01:28:27,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:28,658 INFO L124 PetriNetUnfolderBase]: 3265/4719 cut-off events. [2023-08-24 01:28:28,658 INFO L125 PetriNetUnfolderBase]: For 57866/58727 co-relation queries the response was YES. [2023-08-24 01:28:28,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30533 conditions, 4719 events. 3265/4719 cut-off events. For 57866/58727 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 22495 event pairs, 766 based on Foata normal form. 191/4728 useless extension candidates. Maximal degree in co-relation 29946. Up to 4175 conditions per place. [2023-08-24 01:28:28,695 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 258 selfloop transitions, 56 changer transitions 2/332 dead transitions. [2023-08-24 01:28:28,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 332 transitions, 5137 flow [2023-08-24 01:28:28,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:28:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:28:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 866 transitions. [2023-08-24 01:28:28,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145573380867499 [2023-08-24 01:28:28,700 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 866 transitions. [2023-08-24 01:28:28,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 866 transitions. [2023-08-24 01:28:28,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:28,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 866 transitions. [2023-08-24 01:28:28,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.22222222222223) internal successors, (866), 9 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:28,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:28,705 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:28,705 INFO L175 Difference]: Start difference. First operand has 118 places, 263 transitions, 3841 flow. Second operand 9 states and 866 transitions. [2023-08-24 01:28:28,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 332 transitions, 5137 flow [2023-08-24 01:28:28,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 332 transitions, 4749 flow, removed 182 selfloop flow, removed 1 redundant places. [2023-08-24 01:28:28,782 INFO L231 Difference]: Finished difference. Result has 128 places, 282 transitions, 4075 flow [2023-08-24 01:28:28,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=3453, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4075, PETRI_PLACES=128, PETRI_TRANSITIONS=282} [2023-08-24 01:28:28,783 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2023-08-24 01:28:28,783 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 282 transitions, 4075 flow [2023-08-24 01:28:28,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 89.9090909090909) internal successors, (989), 11 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:28,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:28,784 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:28,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 01:28:28,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:28,990 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:28,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:28,990 INFO L85 PathProgramCache]: Analyzing trace with hash 548279165, now seen corresponding path program 7 times [2023-08-24 01:28:28,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:28,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481953893] [2023-08-24 01:28:28,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:28,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:29,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:29,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481953893] [2023-08-24 01:28:29,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481953893] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:29,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373506830] [2023-08-24 01:28:29,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 01:28:29,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:29,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:29,106 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:28:29,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 01:28:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:29,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:28:29,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:29,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:29,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373506830] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:29,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:29,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-08-24 01:28:29,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063728167] [2023-08-24 01:28:29,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:29,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:28:29,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:29,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:28:29,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-24 01:28:29,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:28:29,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 282 transitions, 4075 flow. Second operand has 12 states, 12 states have (on average 84.83333333333333) internal successors, (1018), 12 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:29,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:29,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:28:29,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:30,428 INFO L124 PetriNetUnfolderBase]: 5216/7472 cut-off events. [2023-08-24 01:28:30,428 INFO L125 PetriNetUnfolderBase]: For 87226/87417 co-relation queries the response was YES. [2023-08-24 01:28:30,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46844 conditions, 7472 events. 5216/7472 cut-off events. For 87226/87417 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 36872 event pairs, 514 based on Foata normal form. 133/7569 useless extension candidates. Maximal degree in co-relation 45685. Up to 2629 conditions per place. [2023-08-24 01:28:30,480 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 520 selfloop transitions, 142 changer transitions 0/666 dead transitions. [2023-08-24 01:28:30,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 666 transitions, 10412 flow [2023-08-24 01:28:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 01:28:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 01:28:30,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1186 transitions. [2023-08-24 01:28:30,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878650761003702 [2023-08-24 01:28:30,483 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1186 transitions. [2023-08-24 01:28:30,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1186 transitions. [2023-08-24 01:28:30,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:30,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1186 transitions. [2023-08-24 01:28:30,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 91.23076923076923) internal successors, (1186), 13 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:30,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 187.0) internal successors, (2618), 14 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:30,489 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 187.0) internal successors, (2618), 14 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:30,490 INFO L175 Difference]: Start difference. First operand has 128 places, 282 transitions, 4075 flow. Second operand 13 states and 1186 transitions. [2023-08-24 01:28:30,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 666 transitions, 10412 flow [2023-08-24 01:28:30,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 666 transitions, 9501 flow, removed 431 selfloop flow, removed 2 redundant places. [2023-08-24 01:28:30,609 INFO L231 Difference]: Finished difference. Result has 148 places, 359 transitions, 5438 flow [2023-08-24 01:28:30,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=3689, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5438, PETRI_PLACES=148, PETRI_TRANSITIONS=359} [2023-08-24 01:28:30,610 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2023-08-24 01:28:30,610 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 359 transitions, 5438 flow [2023-08-24 01:28:30,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 84.83333333333333) internal successors, (1018), 12 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:30,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:30,611 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:30,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 01:28:30,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:30,817 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:30,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:30,817 INFO L85 PathProgramCache]: Analyzing trace with hash 390393696, now seen corresponding path program 8 times [2023-08-24 01:28:30,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:30,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561992904] [2023-08-24 01:28:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:30,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:28:30,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:30,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561992904] [2023-08-24 01:28:30,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561992904] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:30,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119768365] [2023-08-24 01:28:30,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:28:30,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:30,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:30,959 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) [2023-08-24 01:28:30,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 01:28:31,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:28:31,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:28:31,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:28:31,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:31,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:28:31,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:28:31,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119768365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:31,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:31,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-24 01:28:31,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127693985] [2023-08-24 01:28:31,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:31,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 01:28:31,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:31,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 01:28:31,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-24 01:28:31,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:28:31,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 359 transitions, 5438 flow. Second operand has 16 states, 16 states have (on average 83.0625) internal successors, (1329), 16 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:31,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:31,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:28:31,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:32,522 INFO L124 PetriNetUnfolderBase]: 6020/8502 cut-off events. [2023-08-24 01:28:32,522 INFO L125 PetriNetUnfolderBase]: For 134051/134327 co-relation queries the response was YES. [2023-08-24 01:28:32,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59477 conditions, 8502 events. 6020/8502 cut-off events. For 134051/134327 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 41371 event pairs, 1538 based on Foata normal form. 155/8593 useless extension candidates. Maximal degree in co-relation 57993. Up to 6168 conditions per place. [2023-08-24 01:28:32,586 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 423 selfloop transitions, 263 changer transitions 0/690 dead transitions. [2023-08-24 01:28:32,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 690 transitions, 11341 flow [2023-08-24 01:28:32,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 01:28:32,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 01:28:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1527 transitions. [2023-08-24 01:28:32,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48033972947467757 [2023-08-24 01:28:32,590 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1527 transitions. [2023-08-24 01:28:32,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1527 transitions. [2023-08-24 01:28:32,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:32,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1527 transitions. [2023-08-24 01:28:32,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 89.82352941176471) internal successors, (1527), 17 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:32,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 187.0) internal successors, (3366), 18 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:32,597 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 187.0) internal successors, (3366), 18 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:32,597 INFO L175 Difference]: Start difference. First operand has 148 places, 359 transitions, 5438 flow. Second operand 17 states and 1527 transitions. [2023-08-24 01:28:32,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 690 transitions, 11341 flow [2023-08-24 01:28:33,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 690 transitions, 10794 flow, removed 246 selfloop flow, removed 1 redundant places. [2023-08-24 01:28:33,102 INFO L231 Difference]: Finished difference. Result has 170 places, 517 transitions, 8465 flow [2023-08-24 01:28:33,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=5097, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8465, PETRI_PLACES=170, PETRI_TRANSITIONS=517} [2023-08-24 01:28:33,102 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2023-08-24 01:28:33,103 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 517 transitions, 8465 flow [2023-08-24 01:28:33,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 83.0625) internal successors, (1329), 16 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:33,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:33,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:33,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 01:28:33,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:33,309 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:33,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:33,309 INFO L85 PathProgramCache]: Analyzing trace with hash -446599991, now seen corresponding path program 9 times [2023-08-24 01:28:33,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:33,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725093412] [2023-08-24 01:28:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:33,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:33,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:33,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725093412] [2023-08-24 01:28:33,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725093412] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:33,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929611611] [2023-08-24 01:28:33,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:28:33,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:33,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:33,472 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) [2023-08-24 01:28:33,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 01:28:33,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-24 01:28:33,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:28:33,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:28:33,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:33,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:33,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929611611] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:33,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:33,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-24 01:28:33,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976461338] [2023-08-24 01:28:33,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:33,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 01:28:33,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:33,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 01:28:33,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-08-24 01:28:33,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 01:28:33,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 517 transitions, 8465 flow. Second operand has 17 states, 17 states have (on average 79.3529411764706) internal successors, (1349), 17 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:33,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:33,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 01:28:33,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:37,554 INFO L124 PetriNetUnfolderBase]: 8629/11916 cut-off events. [2023-08-24 01:28:37,554 INFO L125 PetriNetUnfolderBase]: For 211795/211795 co-relation queries the response was YES. [2023-08-24 01:28:37,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93594 conditions, 11916 events. 8629/11916 cut-off events. For 211795/211795 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 58349 event pairs, 1030 based on Foata normal form. 374/12290 useless extension candidates. Maximal degree in co-relation 91658. Up to 5309 conditions per place. [2023-08-24 01:28:37,636 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 544 selfloop transitions, 1049 changer transitions 0/1593 dead transitions. [2023-08-24 01:28:37,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1593 transitions, 29742 flow [2023-08-24 01:28:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-08-24 01:28:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-08-24 01:28:37,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 6651 transitions. [2023-08-24 01:28:37,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502132268327354 [2023-08-24 01:28:37,644 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 6651 transitions. [2023-08-24 01:28:37,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 6651 transitions. [2023-08-24 01:28:37,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:37,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 6651 transitions. [2023-08-24 01:28:37,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 84.18987341772151) internal successors, (6651), 79 states have internal predecessors, (6651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:37,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 187.0) internal successors, (14960), 80 states have internal predecessors, (14960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:37,673 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 187.0) internal successors, (14960), 80 states have internal predecessors, (14960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:37,673 INFO L175 Difference]: Start difference. First operand has 170 places, 517 transitions, 8465 flow. Second operand 79 states and 6651 transitions. [2023-08-24 01:28:37,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 1593 transitions, 29742 flow [2023-08-24 01:28:38,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 1593 transitions, 27079 flow, removed 1073 selfloop flow, removed 3 redundant places. [2023-08-24 01:28:38,805 INFO L231 Difference]: Finished difference. Result has 298 places, 1316 transitions, 25638 flow [2023-08-24 01:28:38,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=7701, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=366, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=25638, PETRI_PLACES=298, PETRI_TRANSITIONS=1316} [2023-08-24 01:28:38,808 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 269 predicate places. [2023-08-24 01:28:38,809 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 1316 transitions, 25638 flow [2023-08-24 01:28:38,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.3529411764706) internal successors, (1349), 17 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:38,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:38,809 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:38,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 01:28:39,014 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,SelfDestructingSolverStorable20 [2023-08-24 01:28:39,015 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:39,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1647327573, now seen corresponding path program 10 times [2023-08-24 01:28:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:39,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936356367] [2023-08-24 01:28:39,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:39,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:39,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:39,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936356367] [2023-08-24 01:28:39,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936356367] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:39,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480131614] [2023-08-24 01:28:39,185 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:28:39,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:39,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:39,189 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) [2023-08-24 01:28:39,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 01:28:39,286 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:28:39,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:28:39,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:28:39,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:28:39,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:28:39,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480131614] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:39,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:39,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2023-08-24 01:28:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380017007] [2023-08-24 01:28:39,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:39,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 01:28:39,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:39,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 01:28:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-24 01:28:39,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 01:28:39,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 1316 transitions, 25638 flow. Second operand has 13 states, 13 states have (on average 80.07692307692308) internal successors, (1041), 13 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:39,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:39,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 01:28:39,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:44,320 INFO L124 PetriNetUnfolderBase]: 9510/13359 cut-off events. [2023-08-24 01:28:44,320 INFO L125 PetriNetUnfolderBase]: For 318482/318482 co-relation queries the response was YES. [2023-08-24 01:28:44,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118767 conditions, 13359 events. 9510/13359 cut-off events. For 318482/318482 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 69341 event pairs, 1081 based on Foata normal form. 424/13783 useless extension candidates. Maximal degree in co-relation 118303. Up to 4761 conditions per place. [2023-08-24 01:28:44,453 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 751 selfloop transitions, 818 changer transitions 100/1669 dead transitions. [2023-08-24 01:28:44,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 1669 transitions, 34046 flow [2023-08-24 01:28:44,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-24 01:28:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-24 01:28:44,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2902 transitions. [2023-08-24 01:28:44,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564328405158855 [2023-08-24 01:28:44,459 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2902 transitions. [2023-08-24 01:28:44,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2902 transitions. [2023-08-24 01:28:44,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:44,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2902 transitions. [2023-08-24 01:28:44,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 85.3529411764706) internal successors, (2902), 34 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:44,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 187.0) internal successors, (6545), 35 states have internal predecessors, (6545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:44,469 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 187.0) internal successors, (6545), 35 states have internal predecessors, (6545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:44,469 INFO L175 Difference]: Start difference. First operand has 298 places, 1316 transitions, 25638 flow. Second operand 34 states and 2902 transitions. [2023-08-24 01:28:44,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 1669 transitions, 34046 flow [2023-08-24 01:28:47,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 1669 transitions, 26604 flow, removed 3502 selfloop flow, removed 5 redundant places. [2023-08-24 01:28:47,122 INFO L231 Difference]: Finished difference. Result has 346 places, 1383 transitions, 22687 flow [2023-08-24 01:28:47,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=18285, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=689, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=22687, PETRI_PLACES=346, PETRI_TRANSITIONS=1383} [2023-08-24 01:28:47,123 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 317 predicate places. [2023-08-24 01:28:47,123 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 1383 transitions, 22687 flow [2023-08-24 01:28:47,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.07692307692308) internal successors, (1041), 13 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:47,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:47,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:47,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 01:28:47,324 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,SelfDestructingSolverStorable21 [2023-08-24 01:28:47,324 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:47,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:47,324 INFO L85 PathProgramCache]: Analyzing trace with hash -873179864, now seen corresponding path program 11 times [2023-08-24 01:28:47,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:47,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465911262] [2023-08-24 01:28:47,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:47,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:47,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:47,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:47,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465911262] [2023-08-24 01:28:47,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465911262] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:47,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832201155] [2023-08-24 01:28:47,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 01:28:47,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:47,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:47,449 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) [2023-08-24 01:28:47,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-24 01:28:47,529 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:28:47,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:28:47,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 01:28:47,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:47,576 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:28:47,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832201155] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:47,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:47,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2023-08-24 01:28:47,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263124420] [2023-08-24 01:28:47,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:47,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:28:47,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:47,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:28:47,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-08-24 01:28:47,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 01:28:47,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 1383 transitions, 22687 flow. Second operand has 12 states, 12 states have (on average 79.83333333333333) internal successors, (958), 12 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:47,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:47,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 01:28:47,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:28:52,415 INFO L124 PetriNetUnfolderBase]: 10598/14935 cut-off events. [2023-08-24 01:28:52,415 INFO L125 PetriNetUnfolderBase]: For 363215/363215 co-relation queries the response was YES. [2023-08-24 01:28:52,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130999 conditions, 14935 events. 10598/14935 cut-off events. For 363215/363215 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 79736 event pairs, 1551 based on Foata normal form. 136/15071 useless extension candidates. Maximal degree in co-relation 130467. Up to 7542 conditions per place. [2023-08-24 01:28:52,588 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 1409 selfloop transitions, 482 changer transitions 122/2013 dead transitions. [2023-08-24 01:28:52,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 2013 transitions, 38439 flow [2023-08-24 01:28:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 01:28:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 01:28:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1113 transitions. [2023-08-24 01:28:52,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45783628136569315 [2023-08-24 01:28:52,591 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1113 transitions. [2023-08-24 01:28:52,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1113 transitions. [2023-08-24 01:28:52,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:28:52,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1113 transitions. [2023-08-24 01:28:52,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.61538461538461) internal successors, (1113), 13 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:52,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 187.0) internal successors, (2618), 14 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:52,596 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 187.0) internal successors, (2618), 14 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:52,596 INFO L175 Difference]: Start difference. First operand has 346 places, 1383 transitions, 22687 flow. Second operand 13 states and 1113 transitions. [2023-08-24 01:28:52,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 2013 transitions, 38439 flow [2023-08-24 01:28:55,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 2013 transitions, 36468 flow, removed 349 selfloop flow, removed 13 redundant places. [2023-08-24 01:28:55,937 INFO L231 Difference]: Finished difference. Result has 349 places, 1523 transitions, 25392 flow [2023-08-24 01:28:55,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=21197, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=938, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=25392, PETRI_PLACES=349, PETRI_TRANSITIONS=1523} [2023-08-24 01:28:55,938 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 320 predicate places. [2023-08-24 01:28:55,939 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 1523 transitions, 25392 flow [2023-08-24 01:28:55,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 79.83333333333333) internal successors, (958), 12 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:55,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:28:55,939 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:28:55,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-24 01:28:56,140 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,SelfDestructingSolverStorable22 [2023-08-24 01:28:56,140 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:28:56,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:28:56,140 INFO L85 PathProgramCache]: Analyzing trace with hash 545044568, now seen corresponding path program 12 times [2023-08-24 01:28:56,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:28:56,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642782290] [2023-08-24 01:28:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:28:56,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:28:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:28:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:28:56,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:28:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642782290] [2023-08-24 01:28:56,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642782290] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:28:56,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572878629] [2023-08-24 01:28:56,278 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 01:28:56,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:56,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:28:56,284 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) [2023-08-24 01:28:56,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-24 01:28:56,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-24 01:28:56,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:28:56,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:28:56,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:28:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:28:56,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:28:56,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:28:56,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572878629] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:28:56,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:28:56,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-24 01:28:56,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456158339] [2023-08-24 01:28:56,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:28:56,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:28:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:28:56,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:28:56,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-24 01:28:56,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:28:56,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 1523 transitions, 25392 flow. Second operand has 12 states, 12 states have (on average 83.91666666666667) internal successors, (1007), 12 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:28:56,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:28:56,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:28:56,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:29:01,529 INFO L124 PetriNetUnfolderBase]: 10386/14834 cut-off events. [2023-08-24 01:29:01,529 INFO L125 PetriNetUnfolderBase]: For 392827/393229 co-relation queries the response was YES. [2023-08-24 01:29:01,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133810 conditions, 14834 events. 10386/14834 cut-off events. For 392827/393229 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 82158 event pairs, 1878 based on Foata normal form. 451/15210 useless extension candidates. Maximal degree in co-relation 133356. Up to 8333 conditions per place. [2023-08-24 01:29:01,706 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 1157 selfloop transitions, 395 changer transitions 76/1648 dead transitions. [2023-08-24 01:29:01,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 1648 transitions, 30353 flow [2023-08-24 01:29:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 01:29:01,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 01:29:01,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 734 transitions. [2023-08-24 01:29:01,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49064171122994654 [2023-08-24 01:29:01,707 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 734 transitions. [2023-08-24 01:29:01,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 734 transitions. [2023-08-24 01:29:01,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:29:01,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 734 transitions. [2023-08-24 01:29:01,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.75) internal successors, (734), 8 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:01,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:01,710 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:01,710 INFO L175 Difference]: Start difference. First operand has 349 places, 1523 transitions, 25392 flow. Second operand 8 states and 734 transitions. [2023-08-24 01:29:01,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 1648 transitions, 30353 flow [2023-08-24 01:29:05,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 1648 transitions, 29483 flow, removed 324 selfloop flow, removed 2 redundant places. [2023-08-24 01:29:05,099 INFO L231 Difference]: Finished difference. Result has 356 places, 1496 transitions, 25048 flow [2023-08-24 01:29:05,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=24607, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=378, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25048, PETRI_PLACES=356, PETRI_TRANSITIONS=1496} [2023-08-24 01:29:05,100 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 327 predicate places. [2023-08-24 01:29:05,101 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 1496 transitions, 25048 flow [2023-08-24 01:29:05,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 83.91666666666667) internal successors, (1007), 12 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:05,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:29:05,101 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:29:05,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-24 01:29:05,306 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,SelfDestructingSolverStorable23 [2023-08-24 01:29:05,306 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:29:05,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:29:05,307 INFO L85 PathProgramCache]: Analyzing trace with hash 582363563, now seen corresponding path program 13 times [2023-08-24 01:29:05,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:29:05,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567155450] [2023-08-24 01:29:05,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:29:05,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:29:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:29:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:29:05,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:29:05,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567155450] [2023-08-24 01:29:05,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567155450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:29:05,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133426527] [2023-08-24 01:29:05,409 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 01:29:05,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:29:05,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:29:05,413 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) [2023-08-24 01:29:05,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-24 01:29:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:29:05,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:29:05,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:29:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:29:05,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:29:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:29:05,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133426527] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:29:05,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:29:05,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-08-24 01:29:05,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864360351] [2023-08-24 01:29:05,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:29:05,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 01:29:05,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:29:05,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 01:29:05,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-08-24 01:29:05,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 01:29:05,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 1496 transitions, 25048 flow. Second operand has 15 states, 15 states have (on average 80.26666666666667) internal successors, (1204), 15 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:05,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:29:05,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 01:29:05,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:29:12,648 INFO L124 PetriNetUnfolderBase]: 12236/17337 cut-off events. [2023-08-24 01:29:12,648 INFO L125 PetriNetUnfolderBase]: For 482309/482309 co-relation queries the response was YES. [2023-08-24 01:29:12,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166247 conditions, 17337 events. 12236/17337 cut-off events. For 482309/482309 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 97181 event pairs, 803 based on Foata normal form. 518/17847 useless extension candidates. Maximal degree in co-relation 165692. Up to 4845 conditions per place. [2023-08-24 01:29:12,858 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 1471 selfloop transitions, 998 changer transitions 67/2536 dead transitions. [2023-08-24 01:29:12,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 2536 transitions, 50976 flow [2023-08-24 01:29:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-24 01:29:12,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-24 01:29:12,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4175 transitions. [2023-08-24 01:29:12,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556368001746153 [2023-08-24 01:29:12,862 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 4175 transitions. [2023-08-24 01:29:12,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 4175 transitions. [2023-08-24 01:29:12,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:29:12,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 4175 transitions. [2023-08-24 01:29:12,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 85.20408163265306) internal successors, (4175), 49 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:12,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 187.0) internal successors, (9350), 50 states have internal predecessors, (9350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:12,876 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 187.0) internal successors, (9350), 50 states have internal predecessors, (9350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:12,876 INFO L175 Difference]: Start difference. First operand has 356 places, 1496 transitions, 25048 flow. Second operand 49 states and 4175 transitions. [2023-08-24 01:29:12,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 2536 transitions, 50976 flow [2023-08-24 01:29:17,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 2536 transitions, 49579 flow, removed 159 selfloop flow, removed 5 redundant places. [2023-08-24 01:29:17,963 INFO L231 Difference]: Finished difference. Result has 440 places, 1891 transitions, 38107 flow [2023-08-24 01:29:17,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=23997, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=624, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=836, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=38107, PETRI_PLACES=440, PETRI_TRANSITIONS=1891} [2023-08-24 01:29:17,964 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 411 predicate places. [2023-08-24 01:29:17,964 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 1891 transitions, 38107 flow [2023-08-24 01:29:17,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.26666666666667) internal successors, (1204), 15 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:17,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:29:17,965 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:29:17,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-24 01:29:18,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:29:18,170 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:29:18,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:29:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1497854770, now seen corresponding path program 14 times [2023-08-24 01:29:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:29:18,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299494873] [2023-08-24 01:29:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:29:18,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:29:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:29:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:29:18,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:29:18,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299494873] [2023-08-24 01:29:18,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299494873] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:29:18,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428453121] [2023-08-24 01:29:18,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:29:18,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:29:18,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:29:18,321 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) [2023-08-24 01:29:18,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-24 01:29:18,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:29:18,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:29:18,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:29:18,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:29:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:29:18,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:29:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:29:18,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428453121] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:29:18,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:29:18,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-24 01:29:18,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595968260] [2023-08-24 01:29:18,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:29:18,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 01:29:18,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:29:18,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 01:29:18,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-08-24 01:29:18,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 01:29:18,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 1891 transitions, 38107 flow. Second operand has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:18,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:29:18,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 01:29:18,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:29:27,455 INFO L124 PetriNetUnfolderBase]: 13363/18658 cut-off events. [2023-08-24 01:29:27,455 INFO L125 PetriNetUnfolderBase]: For 740720/740720 co-relation queries the response was YES. [2023-08-24 01:29:27,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206439 conditions, 18658 events. 13363/18658 cut-off events. For 740720/740720 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 101721 event pairs, 514 based on Foata normal form. 496/19146 useless extension candidates. Maximal degree in co-relation 205603. Up to 5871 conditions per place. [2023-08-24 01:29:27,746 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 1375 selfloop transitions, 1280 changer transitions 39/2694 dead transitions. [2023-08-24 01:29:27,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 2694 transitions, 60899 flow [2023-08-24 01:29:27,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-24 01:29:27,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-24 01:29:27,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3253 transitions. [2023-08-24 01:29:27,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577821559245708 [2023-08-24 01:29:27,750 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3253 transitions. [2023-08-24 01:29:27,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3253 transitions. [2023-08-24 01:29:27,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:29:27,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3253 transitions. [2023-08-24 01:29:27,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 85.60526315789474) internal successors, (3253), 38 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:27,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 187.0) internal successors, (7293), 39 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:27,763 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 187.0) internal successors, (7293), 39 states have internal predecessors, (7293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:27,763 INFO L175 Difference]: Start difference. First operand has 440 places, 1891 transitions, 38107 flow. Second operand 38 states and 3253 transitions. [2023-08-24 01:29:27,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 2694 transitions, 60899 flow [2023-08-24 01:29:36,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 2694 transitions, 55154 flow, removed 2682 selfloop flow, removed 6 redundant places. [2023-08-24 01:29:36,681 INFO L231 Difference]: Finished difference. Result has 489 places, 2138 transitions, 43838 flow [2023-08-24 01:29:36,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=32648, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1821, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=939, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=43838, PETRI_PLACES=489, PETRI_TRANSITIONS=2138} [2023-08-24 01:29:36,683 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 460 predicate places. [2023-08-24 01:29:36,683 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 2138 transitions, 43838 flow [2023-08-24 01:29:36,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:36,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:29:36,684 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:29:36,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-24 01:29:36,889 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,SelfDestructingSolverStorable25 [2023-08-24 01:29:36,889 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:29:36,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:29:36,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1321961705, now seen corresponding path program 15 times [2023-08-24 01:29:36,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:29:36,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956721441] [2023-08-24 01:29:36,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:29:36,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:29:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:29:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:29:37,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:29:37,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956721441] [2023-08-24 01:29:37,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956721441] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:29:37,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701482825] [2023-08-24 01:29:37,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:29:37,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:29:37,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:29:37,045 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) [2023-08-24 01:29:37,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-24 01:29:37,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 01:29:37,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:29:37,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:29:37,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:29:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:29:37,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:29:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:29:37,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701482825] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:29:37,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:29:37,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-08-24 01:29:37,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166829949] [2023-08-24 01:29:37,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:29:37,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 01:29:37,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:29:37,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 01:29:37,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-24 01:29:37,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 01:29:37,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 2138 transitions, 43838 flow. Second operand has 16 states, 16 states have (on average 79.4375) internal successors, (1271), 16 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:37,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:29:37,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 01:29:37,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:29:47,446 INFO L124 PetriNetUnfolderBase]: 15006/20791 cut-off events. [2023-08-24 01:29:47,446 INFO L125 PetriNetUnfolderBase]: For 818284/818284 co-relation queries the response was YES. [2023-08-24 01:29:47,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226029 conditions, 20791 events. 15006/20791 cut-off events. For 818284/818284 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 113038 event pairs, 1918 based on Foata normal form. 208/20999 useless extension candidates. Maximal degree in co-relation 225427. Up to 11118 conditions per place. [2023-08-24 01:29:47,768 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 1564 selfloop transitions, 1205 changer transitions 39/2808 dead transitions. [2023-08-24 01:29:47,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 2808 transitions, 62566 flow [2023-08-24 01:29:47,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-24 01:29:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-24 01:29:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2132 transitions. [2023-08-24 01:29:47,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560427807486631 [2023-08-24 01:29:47,771 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2132 transitions. [2023-08-24 01:29:47,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2132 transitions. [2023-08-24 01:29:47,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:29:47,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2132 transitions. [2023-08-24 01:29:47,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 85.28) internal successors, (2132), 25 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:47,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:47,779 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:47,779 INFO L175 Difference]: Start difference. First operand has 489 places, 2138 transitions, 43838 flow. Second operand 25 states and 2132 transitions. [2023-08-24 01:29:47,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 2808 transitions, 62566 flow [2023-08-24 01:29:57,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 2808 transitions, 57968 flow, removed 1026 selfloop flow, removed 22 redundant places. [2023-08-24 01:29:57,808 INFO L231 Difference]: Finished difference. Result has 501 places, 2416 transitions, 48883 flow [2023-08-24 01:29:57,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=39987, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=959, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1089, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=48883, PETRI_PLACES=501, PETRI_TRANSITIONS=2416} [2023-08-24 01:29:57,809 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 472 predicate places. [2023-08-24 01:29:57,809 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 2416 transitions, 48883 flow [2023-08-24 01:29:57,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.4375) internal successors, (1271), 16 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:57,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:29:57,810 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:29:57,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-24 01:29:58,010 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,SelfDestructingSolverStorable26 [2023-08-24 01:29:58,011 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:29:58,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:29:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1035886221, now seen corresponding path program 16 times [2023-08-24 01:29:58,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:29:58,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613672822] [2023-08-24 01:29:58,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:29:58,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:29:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:29:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:29:58,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:29:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613672822] [2023-08-24 01:29:58,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613672822] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:29:58,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210995659] [2023-08-24 01:29:58,159 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:29:58,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:29:58,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:29:58,160 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) [2023-08-24 01:29:58,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-24 01:29:58,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:29:58,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:29:58,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:29:58,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:29:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:29:58,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:29:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:29:58,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210995659] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:29:58,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:29:58,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-08-24 01:29:58,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231138060] [2023-08-24 01:29:58,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:29:58,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 01:29:58,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:29:58,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 01:29:58,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-08-24 01:29:58,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 01:29:58,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 2416 transitions, 48883 flow. Second operand has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:29:58,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:29:58,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 01:29:58,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:10,990 INFO L124 PetriNetUnfolderBase]: 17279/23890 cut-off events. [2023-08-24 01:30:10,990 INFO L125 PetriNetUnfolderBase]: For 877097/877097 co-relation queries the response was YES. [2023-08-24 01:30:11,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258147 conditions, 23890 events. 17279/23890 cut-off events. For 877097/877097 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 132133 event pairs, 2376 based on Foata normal form. 348/24238 useless extension candidates. Maximal degree in co-relation 256943. Up to 14098 conditions per place. [2023-08-24 01:30:11,417 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 1714 selfloop transitions, 1440 changer transitions 67/3221 dead transitions. [2023-08-24 01:30:11,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 3221 transitions, 69979 flow [2023-08-24 01:30:11,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-24 01:30:11,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-24 01:30:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3868 transitions. [2023-08-24 01:30:11,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44966286910020925 [2023-08-24 01:30:11,423 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3868 transitions. [2023-08-24 01:30:11,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3868 transitions. [2023-08-24 01:30:11,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:11,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3868 transitions. [2023-08-24 01:30:11,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 84.08695652173913) internal successors, (3868), 46 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:30:11,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 187.0) internal successors, (8789), 47 states have internal predecessors, (8789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:30:11,434 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 187.0) internal successors, (8789), 47 states have internal predecessors, (8789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:30:11,434 INFO L175 Difference]: Start difference. First operand has 501 places, 2416 transitions, 48883 flow. Second operand 46 states and 3868 transitions. [2023-08-24 01:30:11,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 3221 transitions, 69979 flow [2023-08-24 01:30:24,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 3221 transitions, 68438 flow, removed 529 selfloop flow, removed 7 redundant places. [2023-08-24 01:30:24,610 INFO L231 Difference]: Finished difference. Result has 566 places, 2787 transitions, 60016 flow [2023-08-24 01:30:24,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=47289, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1051, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=60016, PETRI_PLACES=566, PETRI_TRANSITIONS=2787} [2023-08-24 01:30:24,612 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 537 predicate places. [2023-08-24 01:30:24,612 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 2787 transitions, 60016 flow [2023-08-24 01:30:24,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:30:24,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:30:24,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:30:24,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-24 01:30:24,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-24 01:30:24,817 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:30:24,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:30:24,817 INFO L85 PathProgramCache]: Analyzing trace with hash -578957957, now seen corresponding path program 17 times [2023-08-24 01:30:24,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:30:24,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181864875] [2023-08-24 01:30:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:30:24,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:30:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:30:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:30:24,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:30:24,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181864875] [2023-08-24 01:30:24,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181864875] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:30:24,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576353751] [2023-08-24 01:30:24,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 01:30:24,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:30:24,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:30:24,925 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) [2023-08-24 01:30:24,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-24 01:30:25,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:30:25,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:30:25,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:30:25,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:30:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:30:25,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:30:25,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:30:25,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576353751] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:30:25,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:30:25,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-08-24 01:30:25,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025406698] [2023-08-24 01:30:25,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:30:25,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 01:30:25,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:30:25,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 01:30:25,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-08-24 01:30:25,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 01:30:25,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 2787 transitions, 60016 flow. Second operand has 15 states, 15 states have (on average 79.93333333333334) internal successors, (1199), 15 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:30:25,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:30:25,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 01:30:25,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:30:43,151 INFO L124 PetriNetUnfolderBase]: 22113/30274 cut-off events. [2023-08-24 01:30:43,151 INFO L125 PetriNetUnfolderBase]: For 1075096/1075096 co-relation queries the response was YES. [2023-08-24 01:30:43,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345183 conditions, 30274 events. 22113/30274 cut-off events. For 1075096/1075096 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 168805 event pairs, 706 based on Foata normal form. 356/30630 useless extension candidates. Maximal degree in co-relation 344425. Up to 9117 conditions per place. [2023-08-24 01:30:44,052 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 3032 selfloop transitions, 1997 changer transitions 173/5202 dead transitions. [2023-08-24 01:30:44,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 5202 transitions, 126759 flow [2023-08-24 01:30:44,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-24 01:30:44,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-24 01:30:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4207 transitions. [2023-08-24 01:30:44,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4499465240641711 [2023-08-24 01:30:44,056 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 4207 transitions. [2023-08-24 01:30:44,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 4207 transitions. [2023-08-24 01:30:44,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:30:44,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 4207 transitions. [2023-08-24 01:30:44,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 84.14) internal successors, (4207), 50 states have internal predecessors, (4207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:30:44,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 187.0) internal successors, (9537), 51 states have internal predecessors, (9537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:30:44,073 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 187.0) internal successors, (9537), 51 states have internal predecessors, (9537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:30:44,073 INFO L175 Difference]: Start difference. First operand has 566 places, 2787 transitions, 60016 flow. Second operand 50 states and 4207 transitions. [2023-08-24 01:30:44,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 5202 transitions, 126759 flow [2023-08-24 01:31:04,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 5202 transitions, 124893 flow, removed 832 selfloop flow, removed 11 redundant places. [2023-08-24 01:31:05,009 INFO L231 Difference]: Finished difference. Result has 635 places, 3691 transitions, 88876 flow [2023-08-24 01:31:05,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=58899, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1088, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=88876, PETRI_PLACES=635, PETRI_TRANSITIONS=3691} [2023-08-24 01:31:05,013 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 606 predicate places. [2023-08-24 01:31:05,013 INFO L495 AbstractCegarLoop]: Abstraction has has 635 places, 3691 transitions, 88876 flow [2023-08-24 01:31:05,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.93333333333334) internal successors, (1199), 15 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:31:05,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:31:05,013 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:31:05,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-24 01:31:05,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-24 01:31:05,221 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:31:05,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:31:05,221 INFO L85 PathProgramCache]: Analyzing trace with hash -505830649, now seen corresponding path program 18 times [2023-08-24 01:31:05,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:31:05,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54045088] [2023-08-24 01:31:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:31:05,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:31:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:31:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:31:05,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:31:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54045088] [2023-08-24 01:31:05,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54045088] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:31:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561382413] [2023-08-24 01:31:05,318 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 01:31:05,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:31:05,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:31:05,319 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) [2023-08-24 01:31:05,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-24 01:31:05,422 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 01:31:05,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:31:05,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:31:05,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:31:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:31:05,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:31:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:31:05,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561382413] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:31:05,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:31:05,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-08-24 01:31:05,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678742945] [2023-08-24 01:31:05,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:31:05,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 01:31:05,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:31:05,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 01:31:05,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-08-24 01:31:05,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:31:05,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 3691 transitions, 88876 flow. Second operand has 15 states, 15 states have (on average 83.6) internal successors, (1254), 15 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:31:05,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:31:05,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:31:05,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:31:34,931 INFO L124 PetriNetUnfolderBase]: 28002/38232 cut-off events. [2023-08-24 01:31:34,931 INFO L125 PetriNetUnfolderBase]: For 1795680/1795825 co-relation queries the response was YES. [2023-08-24 01:31:36,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479894 conditions, 38232 events. 28002/38232 cut-off events. For 1795680/1795825 co-relation queries the response was YES. Maximal size of possible extension queue 1739. Compared 219785 event pairs, 1592 based on Foata normal form. 1196/39400 useless extension candidates. Maximal degree in co-relation 479106. Up to 13072 conditions per place. [2023-08-24 01:31:36,621 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 3327 selfloop transitions, 2177 changer transitions 59/5635 dead transitions. [2023-08-24 01:31:36,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 5635 transitions, 151616 flow [2023-08-24 01:31:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 01:31:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 01:31:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2132 transitions. [2023-08-24 01:31:36,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750445632798574 [2023-08-24 01:31:36,624 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2132 transitions. [2023-08-24 01:31:36,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2132 transitions. [2023-08-24 01:31:36,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:31:36,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2132 transitions. [2023-08-24 01:31:36,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 88.83333333333333) internal successors, (2132), 24 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:31:36,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 187.0) internal successors, (4675), 25 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:31:36,630 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 187.0) internal successors, (4675), 25 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:31:36,630 INFO L175 Difference]: Start difference. First operand has 635 places, 3691 transitions, 88876 flow. Second operand 24 states and 2132 transitions. [2023-08-24 01:31:36,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 5635 transitions, 151616 flow [2023-08-24 01:32:17,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 5635 transitions, 146240 flow, removed 1679 selfloop flow, removed 11 redundant places. [2023-08-24 01:32:17,142 INFO L231 Difference]: Finished difference. Result has 657 places, 4501 transitions, 113019 flow [2023-08-24 01:32:17,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=85117, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1441, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2023, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=113019, PETRI_PLACES=657, PETRI_TRANSITIONS=4501} [2023-08-24 01:32:17,145 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 628 predicate places. [2023-08-24 01:32:17,145 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 4501 transitions, 113019 flow [2023-08-24 01:32:17,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 83.6) internal successors, (1254), 15 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:32:17,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:32:17,146 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:32:17,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-24 01:32:17,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:32:17,346 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:32:17,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:32:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash 480064711, now seen corresponding path program 19 times [2023-08-24 01:32:17,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:32:17,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297311418] [2023-08-24 01:32:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:32:17,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:32:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:32:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:32:17,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:32:17,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297311418] [2023-08-24 01:32:17,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297311418] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:32:17,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966491726] [2023-08-24 01:32:17,441 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 01:32:17,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:32:17,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:32:17,445 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) [2023-08-24 01:32:17,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-24 01:32:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:32:17,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:32:17,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:32:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:32:17,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:32:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:32:17,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966491726] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:32:17,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:32:17,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-08-24 01:32:17,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252456013] [2023-08-24 01:32:17,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:32:17,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 01:32:17,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:32:17,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 01:32:17,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-24 01:32:17,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:32:17,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 4501 transitions, 113019 flow. Second operand has 14 states, 14 states have (on average 83.28571428571429) internal successors, (1166), 14 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:32:17,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:32:17,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:32:17,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:32:58,679 INFO L124 PetriNetUnfolderBase]: 34329/46478 cut-off events. [2023-08-24 01:32:58,680 INFO L125 PetriNetUnfolderBase]: For 2237061/2237174 co-relation queries the response was YES. [2023-08-24 01:33:00,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604911 conditions, 46478 events. 34329/46478 cut-off events. For 2237061/2237174 co-relation queries the response was YES. Maximal size of possible extension queue 2066. Compared 267716 event pairs, 5173 based on Foata normal form. 546/46964 useless extension candidates. Maximal degree in co-relation 604087. Up to 37940 conditions per place. [2023-08-24 01:33:00,633 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 4605 selfloop transitions, 1452 changer transitions 42/6171 dead transitions. [2023-08-24 01:33:00,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 6171 transitions, 164774 flow [2023-08-24 01:33:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 01:33:00,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 01:33:00,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1242 transitions. [2023-08-24 01:33:00,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744079449961803 [2023-08-24 01:33:00,635 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1242 transitions. [2023-08-24 01:33:00,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1242 transitions. [2023-08-24 01:33:00,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:33:00,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1242 transitions. [2023-08-24 01:33:00,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 88.71428571428571) internal successors, (1242), 14 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:33:00,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 187.0) internal successors, (2805), 15 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:33:00,638 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 187.0) internal successors, (2805), 15 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:33:00,638 INFO L175 Difference]: Start difference. First operand has 657 places, 4501 transitions, 113019 flow. Second operand 14 states and 1242 transitions. [2023-08-24 01:33:00,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 6171 transitions, 164774 flow [2023-08-24 01:34:03,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 6171 transitions, 160047 flow, removed 1537 selfloop flow, removed 3 redundant places. [2023-08-24 01:34:03,611 INFO L231 Difference]: Finished difference. Result has 677 places, 5445 transitions, 135961 flow [2023-08-24 01:34:03,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=108719, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=784, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=135961, PETRI_PLACES=677, PETRI_TRANSITIONS=5445} [2023-08-24 01:34:03,615 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 648 predicate places. [2023-08-24 01:34:03,615 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 5445 transitions, 135961 flow [2023-08-24 01:34:03,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.28571428571429) internal successors, (1166), 14 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:34:03,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:34:03,616 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:34:03,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-24 01:34:03,816 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,SelfDestructingSolverStorable30 [2023-08-24 01:34:03,816 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:34:03,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:34:03,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1834528069, now seen corresponding path program 20 times [2023-08-24 01:34:03,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:34:03,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465230276] [2023-08-24 01:34:03,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:34:03,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:34:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:34:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:34:03,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:34:03,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465230276] [2023-08-24 01:34:03,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465230276] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:34:03,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605752069] [2023-08-24 01:34:03,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:34:03,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:34:03,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:34:03,909 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) [2023-08-24 01:34:03,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-24 01:34:04,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:34:04,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:34:04,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:34:04,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:34:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:34:04,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:34:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:34:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605752069] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:34:04,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:34:04,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-08-24 01:34:04,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833246338] [2023-08-24 01:34:04,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:34:04,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 01:34:04,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:34:04,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 01:34:04,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-24 01:34:04,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:34:04,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 5445 transitions, 135961 flow. Second operand has 14 states, 14 states have (on average 83.78571428571429) internal successors, (1173), 14 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:34:04,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:34:04,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:34:04,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:34:54,591 INFO L124 PetriNetUnfolderBase]: 38278/52119 cut-off events. [2023-08-24 01:34:54,591 INFO L125 PetriNetUnfolderBase]: For 2514496/2514690 co-relation queries the response was YES. [2023-08-24 01:34:56,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692276 conditions, 52119 events. 38278/52119 cut-off events. For 2514496/2514690 co-relation queries the response was YES. Maximal size of possible extension queue 2370. Compared 309962 event pairs, 2367 based on Foata normal form. 532/52615 useless extension candidates. Maximal degree in co-relation 691430. Up to 18365 conditions per place. [2023-08-24 01:34:57,258 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 4312 selfloop transitions, 2481 changer transitions 42/6907 dead transitions. [2023-08-24 01:34:57,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 6907 transitions, 190391 flow [2023-08-24 01:34:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-24 01:34:57,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-24 01:34:57,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2042 transitions. [2023-08-24 01:34:57,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47477330853289934 [2023-08-24 01:34:57,261 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2042 transitions. [2023-08-24 01:34:57,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2042 transitions. [2023-08-24 01:34:57,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:34:57,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2042 transitions. [2023-08-24 01:34:57,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 88.78260869565217) internal successors, (2042), 23 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:34:57,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 187.0) internal successors, (4488), 24 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:34:57,266 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 187.0) internal successors, (4488), 24 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:34:57,266 INFO L175 Difference]: Start difference. First operand has 677 places, 5445 transitions, 135961 flow. Second operand 23 states and 2042 transitions. [2023-08-24 01:34:57,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 6907 transitions, 190391 flow [2023-08-24 01:36:22,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 6907 transitions, 188228 flow, removed 1054 selfloop flow, removed 2 redundant places. [2023-08-24 01:36:22,155 INFO L231 Difference]: Finished difference. Result has 708 places, 5884 transitions, 153048 flow [2023-08-24 01:36:22,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=134098, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=153048, PETRI_PLACES=708, PETRI_TRANSITIONS=5884} [2023-08-24 01:36:22,159 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 679 predicate places. [2023-08-24 01:36:22,159 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 5884 transitions, 153048 flow [2023-08-24 01:36:22,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.78571428571429) internal successors, (1173), 14 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:36:22,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:36:22,159 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:36:22,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-24 01:36:22,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:36:22,360 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:36:22,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:36:22,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1361342201, now seen corresponding path program 21 times [2023-08-24 01:36:22,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:36:22,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614521190] [2023-08-24 01:36:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:36:22,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:36:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:36:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:36:22,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:36:22,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614521190] [2023-08-24 01:36:22,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614521190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:36:22,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725593722] [2023-08-24 01:36:22,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:36:22,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:36:22,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:36:22,453 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) [2023-08-24 01:36:22,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-24 01:36:22,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 01:36:22,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:36:22,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:36:22,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:36:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:36:22,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:36:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:36:22,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725593722] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:36:22,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:36:22,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-08-24 01:36:22,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981032236] [2023-08-24 01:36:22,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:36:22,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 01:36:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:36:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 01:36:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-24 01:36:22,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 01:36:22,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 5884 transitions, 153048 flow. Second operand has 14 states, 14 states have (on average 83.35714285714286) internal successors, (1167), 14 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:36:22,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:36:22,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 01:36:22,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:37:21,317 INFO L124 PetriNetUnfolderBase]: 38653/52782 cut-off events. [2023-08-24 01:37:21,317 INFO L125 PetriNetUnfolderBase]: For 2608422/2608543 co-relation queries the response was YES. [2023-08-24 01:37:23,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709610 conditions, 52782 events. 38653/52782 cut-off events. For 2608422/2608543 co-relation queries the response was YES. Maximal size of possible extension queue 2419. Compared 317431 event pairs, 2633 based on Foata normal form. 331/53078 useless extension candidates. Maximal degree in co-relation 708712. Up to 19774 conditions per place. [2023-08-24 01:37:23,976 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 4022 selfloop transitions, 2804 changer transitions 78/6976 dead transitions. [2023-08-24 01:37:23,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 6976 transitions, 196114 flow [2023-08-24 01:37:23,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 01:37:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 01:37:23,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1683 transitions. [2023-08-24 01:37:23,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-08-24 01:37:23,979 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1683 transitions. [2023-08-24 01:37:23,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1683 transitions. [2023-08-24 01:37:23,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:37:23,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1683 transitions. [2023-08-24 01:37:23,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 88.57894736842105) internal successors, (1683), 19 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:37:23,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 187.0) internal successors, (3740), 20 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:37:23,984 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 187.0) internal successors, (3740), 20 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:37:23,984 INFO L175 Difference]: Start difference. First operand has 708 places, 5884 transitions, 153048 flow. Second operand 19 states and 1683 transitions. [2023-08-24 01:37:23,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 6976 transitions, 196114 flow [2023-08-24 01:38:53,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 6976 transitions, 194972 flow, removed 300 selfloop flow, removed 3 redundant places. [2023-08-24 01:38:53,594 INFO L231 Difference]: Finished difference. Result has 724 places, 5889 transitions, 157786 flow [2023-08-24 01:38:53,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=151910, PETRI_DIFFERENCE_MINUEND_PLACES=705, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5884, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2786, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3098, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=157786, PETRI_PLACES=724, PETRI_TRANSITIONS=5889} [2023-08-24 01:38:53,600 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 695 predicate places. [2023-08-24 01:38:53,600 INFO L495 AbstractCegarLoop]: Abstraction has has 724 places, 5889 transitions, 157786 flow [2023-08-24 01:38:53,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 83.35714285714286) internal successors, (1167), 14 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:38:53,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:38:53,600 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:38:53,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-24 01:38:53,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:38:53,806 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:38:53,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:38:53,807 INFO L85 PathProgramCache]: Analyzing trace with hash 27806599, now seen corresponding path program 22 times [2023-08-24 01:38:53,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:38:53,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852672014] [2023-08-24 01:38:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:38:53,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:38:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:38:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:38:53,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:38:53,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852672014] [2023-08-24 01:38:53,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852672014] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:38:53,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678936357] [2023-08-24 01:38:53,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:38:53,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:38:53,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:38:53,945 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:38:53,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-24 01:38:54,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:38:54,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:38:54,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 01:38:54,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:38:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:38:54,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:38:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:38:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678936357] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:38:54,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:38:54,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-24 01:38:54,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047153052] [2023-08-24 01:38:54,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:38:54,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 01:38:54,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:38:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 01:38:54,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-08-24 01:38:54,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 01:38:54,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 5889 transitions, 157786 flow. Second operand has 16 states, 16 states have (on average 79.875) internal successors, (1278), 16 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:38:54,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:38:54,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 01:38:54,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:40:21,590 INFO L124 PetriNetUnfolderBase]: 50438/68823 cut-off events. [2023-08-24 01:40:21,590 INFO L125 PetriNetUnfolderBase]: For 4134816/4134816 co-relation queries the response was YES. [2023-08-24 01:40:24,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978953 conditions, 68823 events. 50438/68823 cut-off events. For 4134816/4134816 co-relation queries the response was YES. Maximal size of possible extension queue 3141. Compared 428433 event pairs, 5671 based on Foata normal form. 1454/70277 useless extension candidates. Maximal degree in co-relation 977941. Up to 40819 conditions per place. [2023-08-24 01:40:25,649 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 5865 selfloop transitions, 3084 changer transitions 96/9045 dead transitions. [2023-08-24 01:40:25,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 783 places, 9045 transitions, 267711 flow [2023-08-24 01:40:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-08-24 01:40:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-08-24 01:40:25,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 5155 transitions. [2023-08-24 01:40:25,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45191549048829666 [2023-08-24 01:40:25,654 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 5155 transitions. [2023-08-24 01:40:25,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 5155 transitions. [2023-08-24 01:40:25,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:40:25,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 5155 transitions. [2023-08-24 01:40:25,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 84.50819672131148) internal successors, (5155), 61 states have internal predecessors, (5155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:40:25,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 187.0) internal successors, (11594), 62 states have internal predecessors, (11594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:40:25,668 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 187.0) internal successors, (11594), 62 states have internal predecessors, (11594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:40:25,668 INFO L175 Difference]: Start difference. First operand has 724 places, 5889 transitions, 157786 flow. Second operand 61 states and 5155 transitions. [2023-08-24 01:40:25,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 783 places, 9045 transitions, 267711 flow Received shutdown request... [2023-08-24 01:41:25,482 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 01:41:25,482 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 01:41:25,544 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 01:41:25,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-24 01:41:25,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:41:25,747 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-24 01:41:25,755 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 01:41:25,755 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 01:41:25,755 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 01:41:25,755 INFO L445 BasicCegarLoop]: Path program histogram: [22, 7, 2, 1, 1, 1] [2023-08-24 01:41:25,758 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 01:41:25,758 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 01:41:25,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:41:25 BasicIcfg [2023-08-24 01:41:25,760 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 01:41:25,761 INFO L158 Benchmark]: Toolchain (without parser) took 800090.56ms. Allocated memory was 383.8MB in the beginning and 14.7GB in the end (delta: 14.3GB). Free memory was 360.4MB in the beginning and 7.6GB in the end (delta: -7.3GB). Peak memory consumption was 7.4GB. Max. memory is 16.0GB. [2023-08-24 01:41:25,761 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory is still 360.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:41:25,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.58ms. Allocated memory is still 383.8MB. Free memory was 360.4MB in the beginning and 349.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-24 01:41:25,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.17ms. Allocated memory is still 383.8MB. Free memory was 349.1MB in the beginning and 347.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 01:41:25,762 INFO L158 Benchmark]: Boogie Preprocessor took 33.49ms. Allocated memory is still 383.8MB. Free memory was 347.4MB in the beginning and 346.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 01:41:25,762 INFO L158 Benchmark]: RCFGBuilder took 375.03ms. Allocated memory is still 383.8MB. Free memory was 346.3MB in the beginning and 332.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 01:41:25,762 INFO L158 Benchmark]: TraceAbstraction took 799368.59ms. Allocated memory was 383.8MB in the beginning and 14.7GB in the end (delta: 14.3GB). Free memory was 332.1MB in the beginning and 7.6GB in the end (delta: -7.3GB). Peak memory consumption was 7.4GB. Max. memory is 16.0GB. [2023-08-24 01:41:25,763 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory is still 360.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 257.58ms. Allocated memory is still 383.8MB. Free memory was 360.4MB in the beginning and 349.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.17ms. Allocated memory is still 383.8MB. Free memory was 349.1MB in the beginning and 347.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.49ms. Allocated memory is still 383.8MB. Free memory was 347.4MB in the beginning and 346.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 375.03ms. Allocated memory is still 383.8MB. Free memory was 346.3MB in the beginning and 332.8MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 799368.59ms. Allocated memory was 383.8MB in the beginning and 14.7GB in the end (delta: 14.3GB). Free memory was 332.1MB in the beginning and 7.6GB in the end (delta: -7.3GB). Peak memory consumption was 7.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 98 PlacesBefore, 29 PlacesAfterwards, 95 TransitionsBefore, 22 TransitionsAfterwards, 1518 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 4 ChoiceCompositions, 79 TotalNumberOfCompositions, 1429 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1429, independent: 1429, independent conditional: 0, independent unconditional: 1429, 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: 799, independent: 799, independent conditional: 0, independent unconditional: 799, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1429, independent: 630, independent conditional: 0, independent unconditional: 630, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 799, unknown conditional: 0, unknown unconditional: 799] , 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: 81]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - 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 executing RemoveRedundantFlow. - 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 executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 135 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: 799.3s, OverallIterations: 34, TraceHistogramMax: 2, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 774.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3069 SdHoareTripleChecker+Valid, 9.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3069 mSDsluCounter, 1063 SdHoareTripleChecker+Invalid, 7.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 842 mSDsCounter, 246 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16281 IncrementalHoareTripleChecker+Invalid, 16527 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 246 mSolverCounterUnsat, 221 mSDtfsCounter, 16281 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1642 GetRequests, 967 SyntacticMatches, 38 SemanticMatches, 637 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7494 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157786occurred in iteration=33, InterpolantAutomatonStates: 564, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 1261 NumberOfCodeBlocks, 1244 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 1702 ConstructedInterpolants, 0 QuantifiedInterpolants, 12144 SizeOfPredicates, 48 NumberOfNonLiveVariables, 3817 ConjunctsInSsa, 269 ConjunctsInUnsatCore, 80 InterpolantComputations, 11 PerfectInterpolantSequences, 131/310 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