/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 08:03:06,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 08:03:07,009 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 08:03:07,012 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 08:03:07,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 08:03:07,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 08:03:07,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 08:03:07,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 08:03:07,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 08:03:07,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 08:03:07,030 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 08:03:07,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 08:03:07,031 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 08:03:07,031 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 08:03:07,031 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 08:03:07,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 08:03:07,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 08:03:07,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 08:03:07,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 08:03:07,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 08:03:07,038 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 08:03:07,040 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 08:03:07,040 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 08:03:07,040 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 08:03:07,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 08:03:07,041 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 08:03:07,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 08:03:07,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:03:07,041 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 08:03:07,042 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 08:03:07,042 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 08:03:07,042 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 08:03:07,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 08:03:07,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 08:03:07,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 08:03:07,043 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 08:03:07,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 08:03:07,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 08:03:07,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 08:03:07,321 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 08:03:07,322 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 08:03:07,327 INFO L431 ainManager$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 08:03:08,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 08:03:08,526 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 08:03:08,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2023-08-24 08:03:08,531 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7137dcf67/27e79a1765844085b706264b7fcc1fe1/FLAG9e249aeb5 [2023-08-24 08:03:08,540 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7137dcf67/27e79a1765844085b706264b7fcc1fe1 [2023-08-24 08:03:08,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 08:03:08,542 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 08:03:08,543 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 08:03:08,543 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 08:03:08,545 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 08:03:08,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d12d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08, skipping insertion in model container [2023-08-24 08:03:08,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,558 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 08:03:08,671 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 08:03:08,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:03:08,679 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 08:03:08,699 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 08:03:08,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:03:08,714 INFO L206 MainTranslator]: Completed translation [2023-08-24 08:03:08,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08 WrapperNode [2023-08-24 08:03:08,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 08:03:08,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 08:03:08,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 08:03:08,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 08:03:08,719 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,735 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-08-24 08:03:08,735 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 08:03:08,735 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 08:03:08,735 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 08:03:08,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 08:03:08,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,767 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 08:03:08,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 08:03:08,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 08:03:08,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 08:03:08,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (1/1) ... [2023-08-24 08:03:08,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:03:08,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:08,799 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 08:03:08,809 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 08:03:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 08:03:08,835 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 08:03:08,835 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 08:03:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 08:03:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 08:03:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 08:03:08,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 08:03:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 08:03:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 08:03:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 08:03:08,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 08:03:08,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 08:03:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 08:03:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 08:03:08,838 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 08:03:08,906 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 08:03:08,908 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 08:03:09,112 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 08:03:09,117 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 08:03:09,117 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 08:03:09,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:03:09 BoogieIcfgContainer [2023-08-24 08:03:09,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 08:03:09,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 08:03:09,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 08:03:09,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 08:03:09,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 08:03:08" (1/3) ... [2023-08-24 08:03:09,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431d1bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:03:09, skipping insertion in model container [2023-08-24 08:03:09,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:03:08" (2/3) ... [2023-08-24 08:03:09,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@431d1bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:03:09, skipping insertion in model container [2023-08-24 08:03:09,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:03:09" (3/3) ... [2023-08-24 08:03:09,124 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2023-08-24 08:03:09,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 08:03:09,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 08:03:09,136 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 08:03:09,222 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 08:03:09,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 108 transitions, 240 flow [2023-08-24 08:03:09,298 INFO L124 PetriNetUnfolderBase]: 7/105 cut-off events. [2023-08-24 08:03:09,298 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 08:03:09,302 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 08:03:09,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 108 transitions, 240 flow [2023-08-24 08:03:09,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 95 transitions, 208 flow [2023-08-24 08:03:09,306 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 08:03:09,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 95 transitions, 208 flow [2023-08-24 08:03:09,314 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 95 transitions, 208 flow [2023-08-24 08:03:09,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 95 transitions, 208 flow [2023-08-24 08:03:09,363 INFO L124 PetriNetUnfolderBase]: 7/95 cut-off events. [2023-08-24 08:03:09,363 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 08:03:09,364 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 08:03:09,366 INFO L119 LiptonReduction]: Number of co-enabled transitions 1518 [2023-08-24 08:03:11,271 INFO L134 LiptonReduction]: Checked pairs total: 1429 [2023-08-24 08:03:11,271 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-24 08:03:11,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 08:03:11,295 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;@1b7d8814, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 08:03:11,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 08:03:11,305 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 08:03:11,305 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-08-24 08:03:11,305 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 08:03:11,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:11,306 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 08:03:11,307 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 08:03:11,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:11,311 INFO L85 PathProgramCache]: Analyzing trace with hash -146388736, now seen corresponding path program 1 times [2023-08-24 08:03:11,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:11,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517266739] [2023-08-24 08:03:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:11,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:11,859 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 08:03:11,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:11,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517266739] [2023-08-24 08:03:11,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517266739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:03:11,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:03:11,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 08:03:11,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980825368] [2023-08-24 08:03:11,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:03:11,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 08:03:11,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:11,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 08:03:11,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 08:03:11,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 187 [2023-08-24 08:03:11,892 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 08:03:11,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:11,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 187 [2023-08-24 08:03:11,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:11,995 INFO L124 PetriNetUnfolderBase]: 359/506 cut-off events. [2023-08-24 08:03:11,995 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-24 08:03:11,998 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 08:03:12,001 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-08-24 08:03:12,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 179 flow [2023-08-24 08:03:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 08:03:12,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 08:03:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2023-08-24 08:03:12,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2023-08-24 08:03:12,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2023-08-24 08:03:12,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2023-08-24 08:03:12,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:12,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2023-08-24 08:03:12,026 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 08:03:12,029 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 08:03:12,030 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 08:03:12,031 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 306 transitions. [2023-08-24 08:03:12,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 179 flow [2023-08-24 08:03:12,036 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 08:03:12,037 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2023-08-24 08:03:12,039 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 08:03:12,041 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-08-24 08:03:12,041 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2023-08-24 08:03:12,042 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 08:03:12,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:12,042 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 08:03:12,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 08:03:12,043 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 08:03:12,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:12,049 INFO L85 PathProgramCache]: Analyzing trace with hash -448044843, now seen corresponding path program 1 times [2023-08-24 08:03:12,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:12,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579047487] [2023-08-24 08:03:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:12,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:12,160 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 08:03:12,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:12,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579047487] [2023-08-24 08:03:12,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579047487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:03:12,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:03:12,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 08:03:12,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320385655] [2023-08-24 08:03:12,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:03:12,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 08:03:12,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:12,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 08:03:12,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 08:03:12,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:03:12,165 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 08:03:12,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:12,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:03:12,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:12,323 INFO L124 PetriNetUnfolderBase]: 478/727 cut-off events. [2023-08-24 08:03:12,323 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2023-08-24 08:03:12,325 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 08:03:12,328 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 47 selfloop transitions, 6 changer transitions 2/56 dead transitions. [2023-08-24 08:03:12,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 56 transitions, 269 flow [2023-08-24 08:03:12,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 08:03:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 08:03:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 459 transitions. [2023-08-24 08:03:12,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2023-08-24 08:03:12,330 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 459 transitions. [2023-08-24 08:03:12,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 459 transitions. [2023-08-24 08:03:12,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:12,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 459 transitions. [2023-08-24 08:03:12,331 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 08:03:12,334 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 08:03:12,335 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 08:03:12,335 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 5 states and 459 transitions. [2023-08-24 08:03:12,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 56 transitions, 269 flow [2023-08-24 08:03:12,336 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 08:03:12,337 INFO L231 Difference]: Finished difference. Result has 32 places, 29 transitions, 127 flow [2023-08-24 08:03:12,337 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 08:03:12,338 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-08-24 08:03:12,338 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 29 transitions, 127 flow [2023-08-24 08:03:12,339 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 08:03:12,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:12,339 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 08:03:12,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 08:03:12,340 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 08:03:12,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:12,344 INFO L85 PathProgramCache]: Analyzing trace with hash 807203915, now seen corresponding path program 2 times [2023-08-24 08:03:12,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:12,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201958580] [2023-08-24 08:03:12,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:12,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:12,442 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 08:03:12,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:12,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201958580] [2023-08-24 08:03:12,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201958580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:03:12,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:03:12,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 08:03:12,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282381764] [2023-08-24 08:03:12,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:03:12,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:03:12,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:03:12,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:03:12,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-08-24 08:03:12,447 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 08:03:12,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:12,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-08-24 08:03:12,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:12,557 INFO L124 PetriNetUnfolderBase]: 456/690 cut-off events. [2023-08-24 08:03:12,558 INFO L125 PetriNetUnfolderBase]: For 1030/1160 co-relation queries the response was YES. [2023-08-24 08:03:12,559 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 08:03:12,561 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 42 selfloop transitions, 5 changer transitions 6/56 dead transitions. [2023-08-24 08:03:12,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 56 transitions, 333 flow [2023-08-24 08:03:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 08:03:12,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 08:03:12,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2023-08-24 08:03:12,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187165775401069 [2023-08-24 08:03:12,562 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2023-08-24 08:03:12,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2023-08-24 08:03:12,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:12,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2023-08-24 08:03:12,563 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 08:03:12,564 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 08:03:12,565 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 08:03:12,565 INFO L175 Difference]: Start difference. First operand has 32 places, 29 transitions, 127 flow. Second operand 4 states and 388 transitions. [2023-08-24 08:03:12,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 56 transitions, 333 flow [2023-08-24 08:03:12,566 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 08:03:12,566 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 153 flow [2023-08-24 08:03:12,566 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 08:03:12,567 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-08-24 08:03:12,567 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 153 flow [2023-08-24 08:03:12,567 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 08:03:12,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:12,567 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 08:03:12,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 08:03:12,568 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 08:03:12,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:12,568 INFO L85 PathProgramCache]: Analyzing trace with hash -224015934, now seen corresponding path program 1 times [2023-08-24 08:03:12,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:12,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471013427] [2023-08-24 08:03:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:12,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:12,661 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 08:03:12,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:12,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471013427] [2023-08-24 08:03:12,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471013427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:03:12,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:03:12,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 08:03:12,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719794287] [2023-08-24 08:03:12,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:03:12,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 08:03:12,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:12,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 08:03:12,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 08:03:12,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:03:12,664 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 08:03:12,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:12,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:03:12,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:12,795 INFO L124 PetriNetUnfolderBase]: 607/975 cut-off events. [2023-08-24 08:03:12,795 INFO L125 PetriNetUnfolderBase]: For 2613/2717 co-relation queries the response was YES. [2023-08-24 08:03:12,796 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 08:03:12,799 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 54 selfloop transitions, 8 changer transitions 6/70 dead transitions. [2023-08-24 08:03:12,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 70 transitions, 450 flow [2023-08-24 08:03:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 08:03:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 08:03:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 463 transitions. [2023-08-24 08:03:12,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49518716577540106 [2023-08-24 08:03:12,800 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 463 transitions. [2023-08-24 08:03:12,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 463 transitions. [2023-08-24 08:03:12,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:12,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 463 transitions. [2023-08-24 08:03:12,801 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 08:03:12,803 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 08:03:12,803 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 08:03:12,803 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 153 flow. Second operand 5 states and 463 transitions. [2023-08-24 08:03:12,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 70 transitions, 450 flow [2023-08-24 08:03:12,807 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 08:03:12,808 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 226 flow [2023-08-24 08:03:12,808 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 08:03:12,809 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-08-24 08:03:12,809 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 226 flow [2023-08-24 08:03:12,809 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 08:03:12,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:12,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:03:12,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 08:03:12,810 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 08:03:12,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:12,810 INFO L85 PathProgramCache]: Analyzing trace with hash -336778223, now seen corresponding path program 3 times [2023-08-24 08:03:12,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:12,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541736748] [2023-08-24 08:03:12,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:12,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:12,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:12,867 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 08:03:12,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:12,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541736748] [2023-08-24 08:03:12,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541736748] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:03:12,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:03:12,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 08:03:12,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624835936] [2023-08-24 08:03:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:03:12,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 08:03:12,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 08:03:12,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 08:03:12,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:03:12,870 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 08:03:12,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:12,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:03:12,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:13,018 INFO L124 PetriNetUnfolderBase]: 860/1318 cut-off events. [2023-08-24 08:03:13,018 INFO L125 PetriNetUnfolderBase]: For 4981/5236 co-relation queries the response was YES. [2023-08-24 08:03:13,020 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 08:03:13,025 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 50 selfloop transitions, 15 changer transitions 7/74 dead transitions. [2023-08-24 08:03:13,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 74 transitions, 672 flow [2023-08-24 08:03:13,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 08:03:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 08:03:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-24 08:03:13,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48128342245989303 [2023-08-24 08:03:13,026 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-24 08:03:13,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-24 08:03:13,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:13,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-24 08:03:13,027 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 08:03:13,028 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 08:03:13,028 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 08:03:13,028 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 226 flow. Second operand 5 states and 450 transitions. [2023-08-24 08:03:13,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 74 transitions, 672 flow [2023-08-24 08:03:13,031 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 08:03:13,032 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 398 flow [2023-08-24 08:03:13,032 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 08:03:13,033 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-08-24 08:03:13,033 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 398 flow [2023-08-24 08:03:13,033 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 08:03:13,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:13,033 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 08:03:13,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 08:03:13,033 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 08:03:13,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:13,034 INFO L85 PathProgramCache]: Analyzing trace with hash 395655605, now seen corresponding path program 4 times [2023-08-24 08:03:13,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:13,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447205831] [2023-08-24 08:03:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:13,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:13,114 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 08:03:13,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:13,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447205831] [2023-08-24 08:03:13,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447205831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:03:13,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:03:13,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 08:03:13,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942798878] [2023-08-24 08:03:13,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:03:13,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 08:03:13,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:13,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 08:03:13,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 08:03:13,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:03:13,116 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 08:03:13,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:13,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:03:13,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:13,269 INFO L124 PetriNetUnfolderBase]: 875/1342 cut-off events. [2023-08-24 08:03:13,269 INFO L125 PetriNetUnfolderBase]: For 7081/7330 co-relation queries the response was YES. [2023-08-24 08:03:13,271 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 08:03:13,276 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 51 selfloop transitions, 21 changer transitions 4/78 dead transitions. [2023-08-24 08:03:13,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 78 transitions, 826 flow [2023-08-24 08:03:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 08:03:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 08:03:13,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-24 08:03:13,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48128342245989303 [2023-08-24 08:03:13,277 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-24 08:03:13,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-24 08:03:13,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:13,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-24 08:03:13,278 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 08:03:13,279 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 08:03:13,280 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 08:03:13,280 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 398 flow. Second operand 5 states and 450 transitions. [2023-08-24 08:03:13,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 78 transitions, 826 flow [2023-08-24 08:03:13,285 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 08:03:13,286 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 571 flow [2023-08-24 08:03:13,286 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 08:03:13,287 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2023-08-24 08:03:13,287 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 571 flow [2023-08-24 08:03:13,287 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 08:03:13,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:13,287 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 08:03:13,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 08:03:13,288 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 08:03:13,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1347830343, now seen corresponding path program 5 times [2023-08-24 08:03:13,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:13,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940315376] [2023-08-24 08:03:13,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:13,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:13,339 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 08:03:13,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:13,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940315376] [2023-08-24 08:03:13,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940315376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:03:13,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:03:13,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 08:03:13,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411157191] [2023-08-24 08:03:13,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:03:13,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 08:03:13,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 08:03:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 08:03:13,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:03:13,341 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 08:03:13,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:13,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:03:13,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:13,490 INFO L124 PetriNetUnfolderBase]: 887/1406 cut-off events. [2023-08-24 08:03:13,490 INFO L125 PetriNetUnfolderBase]: For 9184/9463 co-relation queries the response was YES. [2023-08-24 08:03:13,493 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 08:03:13,499 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 62 selfloop transitions, 18 changer transitions 5/87 dead transitions. [2023-08-24 08:03:13,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 87 transitions, 938 flow [2023-08-24 08:03:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 08:03:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 08:03:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2023-08-24 08:03:13,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48663101604278075 [2023-08-24 08:03:13,500 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2023-08-24 08:03:13,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2023-08-24 08:03:13,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:13,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2023-08-24 08:03:13,502 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 08:03:13,503 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 08:03:13,503 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 08:03:13,503 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 571 flow. Second operand 5 states and 455 transitions. [2023-08-24 08:03:13,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 87 transitions, 938 flow [2023-08-24 08:03:13,513 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 08:03:13,514 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 620 flow [2023-08-24 08:03:13,514 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 08:03:13,515 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2023-08-24 08:03:13,515 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 620 flow [2023-08-24 08:03:13,515 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 08:03:13,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:13,515 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 08:03:13,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 08:03:13,515 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 08:03:13,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:13,516 INFO L85 PathProgramCache]: Analyzing trace with hash 227849201, now seen corresponding path program 1 times [2023-08-24 08:03:13,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:13,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484197382] [2023-08-24 08:03:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:13,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:13,574 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 08:03:13,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:13,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484197382] [2023-08-24 08:03:13,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484197382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:03:13,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:03:13,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 08:03:13,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422932604] [2023-08-24 08:03:13,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:03:13,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:03:13,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:13,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:03:13,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:03:13,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-08-24 08:03:13,576 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 08:03:13,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:13,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-08-24 08:03:13,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:13,733 INFO L124 PetriNetUnfolderBase]: 882/1411 cut-off events. [2023-08-24 08:03:13,733 INFO L125 PetriNetUnfolderBase]: For 12452/12812 co-relation queries the response was YES. [2023-08-24 08:03:13,736 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 08:03:13,741 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 56 selfloop transitions, 12 changer transitions 23/97 dead transitions. [2023-08-24 08:03:13,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 97 transitions, 1133 flow [2023-08-24 08:03:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 08:03:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 08:03:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 386 transitions. [2023-08-24 08:03:13,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516042780748663 [2023-08-24 08:03:13,743 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 386 transitions. [2023-08-24 08:03:13,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 386 transitions. [2023-08-24 08:03:13,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:13,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 386 transitions. [2023-08-24 08:03:13,744 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 08:03:13,745 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 08:03:13,745 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 08:03:13,745 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 620 flow. Second operand 4 states and 386 transitions. [2023-08-24 08:03:13,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 97 transitions, 1133 flow [2023-08-24 08:03:13,761 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 08:03:13,763 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 647 flow [2023-08-24 08:03:13,763 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 08:03:13,766 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2023-08-24 08:03:13,766 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 647 flow [2023-08-24 08:03:13,766 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 08:03:13,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:13,767 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 08:03:13,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 08:03:13,767 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 08:03:13,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:13,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1338267923, now seen corresponding path program 6 times [2023-08-24 08:03:13,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:13,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105551592] [2023-08-24 08:03:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:13,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:13,836 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 08:03:13,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:13,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105551592] [2023-08-24 08:03:13,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105551592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:03:13,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:03:13,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 08:03:13,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000881702] [2023-08-24 08:03:13,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:03:13,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:03:13,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:13,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:03:13,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:03:13,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-08-24 08:03:13,840 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 08:03:13,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:13,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-08-24 08:03:13,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:13,992 INFO L124 PetriNetUnfolderBase]: 1002/1602 cut-off events. [2023-08-24 08:03:13,993 INFO L125 PetriNetUnfolderBase]: For 13173/13486 co-relation queries the response was YES. [2023-08-24 08:03:13,995 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 08:03:14,005 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 60 selfloop transitions, 9 changer transitions 19/96 dead transitions. [2023-08-24 08:03:14,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 96 transitions, 1122 flow [2023-08-24 08:03:14,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 08:03:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 08:03:14,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 388 transitions. [2023-08-24 08:03:14,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5187165775401069 [2023-08-24 08:03:14,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 388 transitions. [2023-08-24 08:03:14,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 388 transitions. [2023-08-24 08:03:14,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:14,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 388 transitions. [2023-08-24 08:03:14,007 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 08:03:14,008 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 08:03:14,008 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 08:03:14,008 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 647 flow. Second operand 4 states and 388 transitions. [2023-08-24 08:03:14,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 96 transitions, 1122 flow [2023-08-24 08:03:14,017 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 08:03:14,018 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 645 flow [2023-08-24 08:03:14,019 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 08:03:14,019 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2023-08-24 08:03:14,019 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 645 flow [2023-08-24 08:03:14,020 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 08:03:14,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:14,020 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 08:03:14,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 08:03:14,020 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 08:03:14,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:14,020 INFO L85 PathProgramCache]: Analyzing trace with hash -963156035, now seen corresponding path program 7 times [2023-08-24 08:03:14,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:14,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150083599] [2023-08-24 08:03:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:14,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:14,096 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 08:03:14,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:14,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150083599] [2023-08-24 08:03:14,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150083599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:03:14,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:03:14,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 08:03:14,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913583774] [2023-08-24 08:03:14,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:03:14,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:03:14,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:03:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:03:14,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-08-24 08:03:14,099 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 08:03:14,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:14,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-08-24 08:03:14,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:14,263 INFO L124 PetriNetUnfolderBase]: 992/1546 cut-off events. [2023-08-24 08:03:14,263 INFO L125 PetriNetUnfolderBase]: For 15077/15619 co-relation queries the response was YES. [2023-08-24 08:03:14,266 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 08:03:14,273 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 65 selfloop transitions, 18 changer transitions 11/102 dead transitions. [2023-08-24 08:03:14,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 102 transitions, 1307 flow [2023-08-24 08:03:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 08:03:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 08:03:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 382 transitions. [2023-08-24 08:03:14,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106951871657754 [2023-08-24 08:03:14,274 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 382 transitions. [2023-08-24 08:03:14,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 382 transitions. [2023-08-24 08:03:14,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:14,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 382 transitions. [2023-08-24 08:03:14,275 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 08:03:14,276 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 08:03:14,276 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 08:03:14,276 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 645 flow. Second operand 4 states and 382 transitions. [2023-08-24 08:03:14,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 102 transitions, 1307 flow [2023-08-24 08:03:14,285 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 08:03:14,286 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 902 flow [2023-08-24 08:03:14,286 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 08:03:14,286 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-08-24 08:03:14,286 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 902 flow [2023-08-24 08:03:14,287 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 08:03:14,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:14,287 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 08:03:14,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 08:03:14,287 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 08:03:14,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:14,287 INFO L85 PathProgramCache]: Analyzing trace with hash -963570300, now seen corresponding path program 2 times [2023-08-24 08:03:14,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:14,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450905041] [2023-08-24 08:03:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:14,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:14,333 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 08:03:14,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:14,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450905041] [2023-08-24 08:03:14,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450905041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:03:14,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:03:14,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 08:03:14,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120526470] [2023-08-24 08:03:14,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:03:14,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:03:14,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:14,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:03:14,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:03:14,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-08-24 08:03:14,335 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 08:03:14,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:14,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-08-24 08:03:14,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:14,475 INFO L124 PetriNetUnfolderBase]: 905/1344 cut-off events. [2023-08-24 08:03:14,475 INFO L125 PetriNetUnfolderBase]: For 15668/16047 co-relation queries the response was YES. [2023-08-24 08:03:14,477 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 08:03:14,483 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 54 selfloop transitions, 36 changer transitions 9/105 dead transitions. [2023-08-24 08:03:14,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 1450 flow [2023-08-24 08:03:14,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 08:03:14,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 08:03:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2023-08-24 08:03:14,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080213903743316 [2023-08-24 08:03:14,484 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2023-08-24 08:03:14,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2023-08-24 08:03:14,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:14,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2023-08-24 08:03:14,485 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 08:03:14,486 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 08:03:14,486 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 08:03:14,486 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 902 flow. Second operand 4 states and 380 transitions. [2023-08-24 08:03:14,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 1450 flow [2023-08-24 08:03:14,493 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 08:03:14,494 INFO L231 Difference]: Finished difference. Result has 64 places, 78 transitions, 1074 flow [2023-08-24 08:03:14,494 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 08:03:14,495 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-08-24 08:03:14,495 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 78 transitions, 1074 flow [2023-08-24 08:03:14,495 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 08:03:14,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:14,495 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 08:03:14,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 08:03:14,495 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 08:03:14,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:14,496 INFO L85 PathProgramCache]: Analyzing trace with hash -646001861, now seen corresponding path program 1 times [2023-08-24 08:03:14,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:14,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359523218] [2023-08-24 08:03:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:14,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:14,550 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 08:03:14,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:14,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359523218] [2023-08-24 08:03:14,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359523218] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:14,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373276414] [2023-08-24 08:03:14,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:14,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:14,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:14,554 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 08:03:14,615 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 08:03:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:14,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 08:03:14,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:14,746 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 08:03:14,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:14,787 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 08:03:14,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373276414] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:14,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:14,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2023-08-24 08:03:14,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905715146] [2023-08-24 08:03:14,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:14,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 08:03:14,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:14,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 08:03:14,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-24 08:03:14,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 08:03:14,791 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 08:03:14,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:14,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 08:03:14,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:15,051 INFO L124 PetriNetUnfolderBase]: 1164/1671 cut-off events. [2023-08-24 08:03:15,051 INFO L125 PetriNetUnfolderBase]: For 16650/16650 co-relation queries the response was YES. [2023-08-24 08:03:15,054 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 08:03:15,063 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 84 selfloop transitions, 81 changer transitions 2/167 dead transitions. [2023-08-24 08:03:15,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 167 transitions, 2349 flow [2023-08-24 08:03:15,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 08:03:15,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 08:03:15,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 862 transitions. [2023-08-24 08:03:15,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46096256684491976 [2023-08-24 08:03:15,065 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 862 transitions. [2023-08-24 08:03:15,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 862 transitions. [2023-08-24 08:03:15,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:15,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 862 transitions. [2023-08-24 08:03:15,067 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 08:03:15,068 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 08:03:15,069 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 08:03:15,069 INFO L175 Difference]: Start difference. First operand has 64 places, 78 transitions, 1074 flow. Second operand 10 states and 862 transitions. [2023-08-24 08:03:15,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 167 transitions, 2349 flow [2023-08-24 08:03:15,081 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 08:03:15,083 INFO L231 Difference]: Finished difference. Result has 73 places, 116 transitions, 1793 flow [2023-08-24 08:03:15,083 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 08:03:15,084 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2023-08-24 08:03:15,084 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 116 transitions, 1793 flow [2023-08-24 08:03:15,084 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 08:03:15,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:15,085 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 08:03:15,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 08:03:15,289 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 08:03:15,290 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 08:03:15,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:15,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1069550080, now seen corresponding path program 1 times [2023-08-24 08:03:15,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:15,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429354050] [2023-08-24 08:03:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:15,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:15,487 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 08:03:15,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:15,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429354050] [2023-08-24 08:03:15,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429354050] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:15,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634339646] [2023-08-24 08:03:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:15,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:15,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:15,489 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 08:03:15,491 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 08:03:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:15,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 08:03:15,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:15,700 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 08:03:15,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:16,111 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 08:03:16,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634339646] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:16,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:16,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-24 08:03:16,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164512714] [2023-08-24 08:03:16,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:16,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 08:03:16,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:16,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 08:03:16,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-24 08:03:16,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 08:03:16,114 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 08:03:16,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:16,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 08:03:16,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:16,392 INFO L124 PetriNetUnfolderBase]: 1455/2077 cut-off events. [2023-08-24 08:03:16,392 INFO L125 PetriNetUnfolderBase]: For 28720/29436 co-relation queries the response was YES. [2023-08-24 08:03:16,396 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 08:03:16,405 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 134 selfloop transitions, 61 changer transitions 2/213 dead transitions. [2023-08-24 08:03:16,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 213 transitions, 3019 flow [2023-08-24 08:03:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 08:03:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 08:03:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 876 transitions. [2023-08-24 08:03:16,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204991087344029 [2023-08-24 08:03:16,407 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 876 transitions. [2023-08-24 08:03:16,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 876 transitions. [2023-08-24 08:03:16,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:16,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 876 transitions. [2023-08-24 08:03:16,409 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 08:03:16,410 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 08:03:16,410 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 08:03:16,411 INFO L175 Difference]: Start difference. First operand has 73 places, 116 transitions, 1793 flow. Second operand 9 states and 876 transitions. [2023-08-24 08:03:16,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 213 transitions, 3019 flow [2023-08-24 08:03:16,431 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 08:03:16,433 INFO L231 Difference]: Finished difference. Result has 78 places, 153 transitions, 2255 flow [2023-08-24 08:03:16,434 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 08:03:16,434 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2023-08-24 08:03:16,434 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 153 transitions, 2255 flow [2023-08-24 08:03:16,434 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 08:03:16,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:16,435 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 08:03:16,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 08:03:16,639 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 08:03:16,640 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 08:03:16,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:16,640 INFO L85 PathProgramCache]: Analyzing trace with hash 838882518, now seen corresponding path program 2 times [2023-08-24 08:03:16,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:16,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395663936] [2023-08-24 08:03:16,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:16,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:16,819 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 08:03:16,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:16,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395663936] [2023-08-24 08:03:16,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395663936] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:16,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310284863] [2023-08-24 08:03:16,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:03:16,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:16,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:16,820 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 08:03:16,822 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 08:03:16,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:03:16,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:03:16,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 08:03:16,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:17,024 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 08:03:17,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:17,720 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 08:03:17,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310284863] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:17,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:17,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-24 08:03:17,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950513091] [2023-08-24 08:03:17,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:17,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 08:03:17,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:17,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 08:03:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-24 08:03:17,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 08:03:17,722 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 08:03:17,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:17,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 08:03:17,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:18,059 INFO L124 PetriNetUnfolderBase]: 1789/2567 cut-off events. [2023-08-24 08:03:18,059 INFO L125 PetriNetUnfolderBase]: For 31257/31966 co-relation queries the response was YES. [2023-08-24 08:03:18,065 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 08:03:18,075 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 149 selfloop transitions, 61 changer transitions 2/228 dead transitions. [2023-08-24 08:03:18,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 228 transitions, 3200 flow [2023-08-24 08:03:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 08:03:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 08:03:18,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 872 transitions. [2023-08-24 08:03:18,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181224004753416 [2023-08-24 08:03:18,077 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 872 transitions. [2023-08-24 08:03:18,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 872 transitions. [2023-08-24 08:03:18,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:18,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 872 transitions. [2023-08-24 08:03:18,079 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 08:03:18,080 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 08:03:18,081 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 08:03:18,081 INFO L175 Difference]: Start difference. First operand has 78 places, 153 transitions, 2255 flow. Second operand 9 states and 872 transitions. [2023-08-24 08:03:18,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 228 transitions, 3200 flow [2023-08-24 08:03:18,103 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 08:03:18,106 INFO L231 Difference]: Finished difference. Result has 88 places, 172 transitions, 2503 flow [2023-08-24 08:03:18,106 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 08:03:18,106 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2023-08-24 08:03:18,106 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 172 transitions, 2503 flow [2023-08-24 08:03:18,107 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 08:03:18,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:18,107 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 08:03:18,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 08:03:18,311 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 08:03:18,311 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 08:03:18,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1234219720, now seen corresponding path program 3 times [2023-08-24 08:03:18,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:18,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545733255] [2023-08-24 08:03:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:18,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:18,450 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 08:03:18,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:18,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545733255] [2023-08-24 08:03:18,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545733255] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:18,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714950183] [2023-08-24 08:03:18,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:03:18,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:18,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:18,451 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 08:03:18,453 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 08:03:18,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 08:03:18,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:03:18,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 08:03:18,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:18,636 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 08:03:18,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:18,936 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 08:03:18,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714950183] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:18,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:18,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-24 08:03:18,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826896506] [2023-08-24 08:03:18,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:18,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 08:03:18,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:18,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 08:03:18,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-24 08:03:18,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 08:03:18,940 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 08:03:18,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:18,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 08:03:18,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:19,381 INFO L124 PetriNetUnfolderBase]: 2249/3233 cut-off events. [2023-08-24 08:03:19,381 INFO L125 PetriNetUnfolderBase]: For 39322/40111 co-relation queries the response was YES. [2023-08-24 08:03:19,388 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 08:03:19,419 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 186 selfloop transitions, 64 changer transitions 2/268 dead transitions. [2023-08-24 08:03:19,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 268 transitions, 3832 flow [2023-08-24 08:03:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 08:03:19,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 08:03:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 872 transitions. [2023-08-24 08:03:19,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181224004753416 [2023-08-24 08:03:19,422 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 872 transitions. [2023-08-24 08:03:19,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 872 transitions. [2023-08-24 08:03:19,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:19,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 872 transitions. [2023-08-24 08:03:19,424 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 08:03:19,425 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 08:03:19,426 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 08:03:19,426 INFO L175 Difference]: Start difference. First operand has 88 places, 172 transitions, 2503 flow. Second operand 9 states and 872 transitions. [2023-08-24 08:03:19,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 268 transitions, 3832 flow [2023-08-24 08:03:19,454 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 08:03:19,456 INFO L231 Difference]: Finished difference. Result has 98 places, 212 transitions, 3114 flow [2023-08-24 08:03:19,457 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 08:03:19,457 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2023-08-24 08:03:19,457 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 212 transitions, 3114 flow [2023-08-24 08:03:19,458 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 08:03:19,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:19,458 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 08:03:19,465 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 08:03:19,662 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 08:03:19,662 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 08:03:19,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:19,663 INFO L85 PathProgramCache]: Analyzing trace with hash 815568354, now seen corresponding path program 4 times [2023-08-24 08:03:19,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:19,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604777325] [2023-08-24 08:03:19,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:19,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:19,866 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 08:03:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:19,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604777325] [2023-08-24 08:03:19,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604777325] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:19,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561295550] [2023-08-24 08:03:19,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:03:19,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:19,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:19,867 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 08:03:19,923 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 08:03:19,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:03:19,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:03:19,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 08:03:19,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:20,065 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 08:03:20,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:20,411 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 08:03:20,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561295550] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:20,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:20,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-24 08:03:20,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903367943] [2023-08-24 08:03:20,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:20,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 08:03:20,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 08:03:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-24 08:03:20,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 08:03:20,414 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 08:03:20,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:20,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 08:03:20,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:20,845 INFO L124 PetriNetUnfolderBase]: 2557/3685 cut-off events. [2023-08-24 08:03:20,846 INFO L125 PetriNetUnfolderBase]: For 45098/45929 co-relation queries the response was YES. [2023-08-24 08:03:20,854 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 08:03:20,870 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 199 selfloop transitions, 64 changer transitions 2/281 dead transitions. [2023-08-24 08:03:20,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 281 transitions, 4204 flow [2023-08-24 08:03:20,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 08:03:20,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 08:03:20,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 866 transitions. [2023-08-24 08:03:20,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145573380867499 [2023-08-24 08:03:20,873 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 866 transitions. [2023-08-24 08:03:20,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 866 transitions. [2023-08-24 08:03:20,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:20,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 866 transitions. [2023-08-24 08:03:20,874 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 08:03:20,876 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 08:03:20,876 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 08:03:20,876 INFO L175 Difference]: Start difference. First operand has 98 places, 212 transitions, 3114 flow. Second operand 9 states and 866 transitions. [2023-08-24 08:03:20,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 281 transitions, 4204 flow [2023-08-24 08:03:20,919 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 08:03:20,923 INFO L231 Difference]: Finished difference. Result has 108 places, 231 transitions, 3330 flow [2023-08-24 08:03:20,923 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 08:03:20,923 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2023-08-24 08:03:20,923 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 231 transitions, 3330 flow [2023-08-24 08:03:20,923 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 08:03:20,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:20,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:03:20,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-24 08:03:21,128 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 08:03:21,130 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 08:03:21,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash -2005633492, now seen corresponding path program 5 times [2023-08-24 08:03:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:21,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156273971] [2023-08-24 08:03:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:21,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:21,302 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 08:03:21,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156273971] [2023-08-24 08:03:21,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156273971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:21,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961592786] [2023-08-24 08:03:21,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 08:03:21,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:21,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:21,303 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 08:03:21,305 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 08:03:21,385 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 08:03:21,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:03:21,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 08:03:21,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:21,491 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 08:03:21,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:23,386 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 08:03:23,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961592786] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:23,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:23,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-24 08:03:23,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218630289] [2023-08-24 08:03:23,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:23,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 08:03:23,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:23,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 08:03:23,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-24 08:03:23,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 08:03:23,390 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 08:03:23,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:23,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 08:03:23,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:23,837 INFO L124 PetriNetUnfolderBase]: 2931/4229 cut-off events. [2023-08-24 08:03:23,837 INFO L125 PetriNetUnfolderBase]: For 51073/51960 co-relation queries the response was YES. [2023-08-24 08:03:23,847 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 08:03:23,861 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 237 selfloop transitions, 56 changer transitions 2/311 dead transitions. [2023-08-24 08:03:23,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 311 transitions, 4730 flow [2023-08-24 08:03:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 08:03:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 08:03:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 864 transitions. [2023-08-24 08:03:23,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133689839572193 [2023-08-24 08:03:23,864 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 864 transitions. [2023-08-24 08:03:23,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 864 transitions. [2023-08-24 08:03:23,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:23,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 864 transitions. [2023-08-24 08:03:23,865 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 08:03:23,867 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 08:03:23,867 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 08:03:23,867 INFO L175 Difference]: Start difference. First operand has 108 places, 231 transitions, 3330 flow. Second operand 9 states and 864 transitions. [2023-08-24 08:03:23,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 311 transitions, 4730 flow [2023-08-24 08:03:23,973 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 08:03:23,977 INFO L231 Difference]: Finished difference. Result has 118 places, 263 transitions, 3841 flow [2023-08-24 08:03:23,977 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 08:03:23,978 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2023-08-24 08:03:23,978 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 263 transitions, 3841 flow [2023-08-24 08:03:23,978 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 08:03:23,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:23,978 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 08:03:23,985 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 08:03:24,185 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 08:03:24,186 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 08:03:24,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:24,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1790587700, now seen corresponding path program 6 times [2023-08-24 08:03:24,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:24,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032900308] [2023-08-24 08:03:24,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:24,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:24,334 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 08:03:24,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:24,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032900308] [2023-08-24 08:03:24,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032900308] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:24,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717016240] [2023-08-24 08:03:24,335 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 08:03:24,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:24,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:24,336 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 08:03:24,338 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 08:03:24,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-24 08:03:24,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:03:24,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 08:03:24,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:24,525 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 08:03:24,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:26,597 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 08:03:26,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717016240] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:26,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:26,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-24 08:03:26,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194172934] [2023-08-24 08:03:26,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:26,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 08:03:26,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:26,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 08:03:26,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-24 08:03:26,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-24 08:03:26,610 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 08:03:26,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:26,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-24 08:03:26,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:27,248 INFO L124 PetriNetUnfolderBase]: 3265/4719 cut-off events. [2023-08-24 08:03:27,248 INFO L125 PetriNetUnfolderBase]: For 57866/58727 co-relation queries the response was YES. [2023-08-24 08:03:27,261 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 08:03:27,277 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 258 selfloop transitions, 56 changer transitions 2/332 dead transitions. [2023-08-24 08:03:27,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 332 transitions, 5137 flow [2023-08-24 08:03:27,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 08:03:27,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 08:03:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 866 transitions. [2023-08-24 08:03:27,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145573380867499 [2023-08-24 08:03:27,281 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 866 transitions. [2023-08-24 08:03:27,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 866 transitions. [2023-08-24 08:03:27,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:27,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 866 transitions. [2023-08-24 08:03:27,283 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 08:03:27,285 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 08:03:27,285 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 08:03:27,285 INFO L175 Difference]: Start difference. First operand has 118 places, 263 transitions, 3841 flow. Second operand 9 states and 866 transitions. [2023-08-24 08:03:27,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 332 transitions, 5137 flow [2023-08-24 08:03:27,345 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 08:03:27,349 INFO L231 Difference]: Finished difference. Result has 128 places, 282 transitions, 4075 flow [2023-08-24 08:03:27,349 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 08:03:27,349 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2023-08-24 08:03:27,350 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 282 transitions, 4075 flow [2023-08-24 08:03:27,350 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 08:03:27,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:27,350 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 08:03:27,355 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 08:03:27,554 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 08:03:27,555 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 08:03:27,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:27,555 INFO L85 PathProgramCache]: Analyzing trace with hash 548279165, now seen corresponding path program 7 times [2023-08-24 08:03:27,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:27,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435994626] [2023-08-24 08:03:27,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:27,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:27,657 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 08:03:27,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:27,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435994626] [2023-08-24 08:03:27,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435994626] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:27,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526608726] [2023-08-24 08:03:27,657 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 08:03:27,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:27,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:27,672 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 08:03:27,748 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 08:03:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:27,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:03:27,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:27,857 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 08:03:27,858 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:27,915 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 08:03:27,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526608726] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:27,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:27,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-08-24 08:03:27,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485961893] [2023-08-24 08:03:27,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:27,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 08:03:27,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 08:03:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-24 08:03:27,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:03:27,917 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 08:03:27,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:27,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:03:27,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:28,903 INFO L124 PetriNetUnfolderBase]: 5216/7472 cut-off events. [2023-08-24 08:03:28,904 INFO L125 PetriNetUnfolderBase]: For 87226/87417 co-relation queries the response was YES. [2023-08-24 08:03:28,931 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 08:03:29,098 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 520 selfloop transitions, 142 changer transitions 0/666 dead transitions. [2023-08-24 08:03:29,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 666 transitions, 10412 flow [2023-08-24 08:03:29,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 08:03:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 08:03:29,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1186 transitions. [2023-08-24 08:03:29,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4878650761003702 [2023-08-24 08:03:29,110 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1186 transitions. [2023-08-24 08:03:29,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1186 transitions. [2023-08-24 08:03:29,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:29,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1186 transitions. [2023-08-24 08:03:29,113 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 08:03:29,115 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 08:03:29,115 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 08:03:29,115 INFO L175 Difference]: Start difference. First operand has 128 places, 282 transitions, 4075 flow. Second operand 13 states and 1186 transitions. [2023-08-24 08:03:29,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 666 transitions, 10412 flow [2023-08-24 08:03:29,233 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 08:03:29,240 INFO L231 Difference]: Finished difference. Result has 148 places, 359 transitions, 5438 flow [2023-08-24 08:03:29,240 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 08:03:29,240 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 119 predicate places. [2023-08-24 08:03:29,240 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 359 transitions, 5438 flow [2023-08-24 08:03:29,241 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 08:03:29,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:29,241 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 08:03:29,246 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 08:03:29,446 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 08:03:29,446 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 08:03:29,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash 390393696, now seen corresponding path program 8 times [2023-08-24 08:03:29,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:29,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933005502] [2023-08-24 08:03:29,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:29,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:29,681 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 08:03:29,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:29,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933005502] [2023-08-24 08:03:29,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933005502] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:29,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083280376] [2023-08-24 08:03:29,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:03:29,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:29,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:29,682 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 08:03:29,685 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 08:03:29,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:03:29,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:03:29,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:03:29,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:29,792 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 08:03:29,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:29,850 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 08:03:29,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083280376] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:29,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:29,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-24 08:03:29,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022658794] [2023-08-24 08:03:29,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:29,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 08:03:29,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:29,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 08:03:29,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-24 08:03:29,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:03:29,853 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 08:03:29,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:29,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:03:29,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:31,229 INFO L124 PetriNetUnfolderBase]: 6020/8502 cut-off events. [2023-08-24 08:03:31,229 INFO L125 PetriNetUnfolderBase]: For 134051/134327 co-relation queries the response was YES. [2023-08-24 08:03:31,251 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 08:03:31,311 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 423 selfloop transitions, 263 changer transitions 0/690 dead transitions. [2023-08-24 08:03:31,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 690 transitions, 11341 flow [2023-08-24 08:03:31,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 08:03:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 08:03:31,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1527 transitions. [2023-08-24 08:03:31,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48033972947467757 [2023-08-24 08:03:31,313 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1527 transitions. [2023-08-24 08:03:31,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1527 transitions. [2023-08-24 08:03:31,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:31,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1527 transitions. [2023-08-24 08:03:31,315 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 08:03:31,318 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 08:03:31,318 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 08:03:31,318 INFO L175 Difference]: Start difference. First operand has 148 places, 359 transitions, 5438 flow. Second operand 17 states and 1527 transitions. [2023-08-24 08:03:31,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 690 transitions, 11341 flow [2023-08-24 08:03:31,573 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 08:03:31,580 INFO L231 Difference]: Finished difference. Result has 170 places, 517 transitions, 8465 flow [2023-08-24 08:03:31,580 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 08:03:31,581 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2023-08-24 08:03:31,581 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 517 transitions, 8465 flow [2023-08-24 08:03:31,581 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 08:03:31,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:31,581 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 08:03:31,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-24 08:03:31,785 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 08:03:31,786 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 08:03:31,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash -446599991, now seen corresponding path program 9 times [2023-08-24 08:03:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:31,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880429544] [2023-08-24 08:03:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:31,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:31,902 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 08:03:31,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:31,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880429544] [2023-08-24 08:03:31,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880429544] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:31,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215075167] [2023-08-24 08:03:31,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:03:31,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:31,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:31,904 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 08:03:31,934 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 08:03:31,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-24 08:03:31,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:03:31,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:03:31,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:32,028 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 08:03:32,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:32,083 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 08:03:32,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215075167] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:32,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:32,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-24 08:03:32,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78021174] [2023-08-24 08:03:32,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:32,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 08:03:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:32,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 08:03:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-08-24 08:03:32,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 08:03:32,086 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 08:03:32,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:32,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 08:03:32,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:35,306 INFO L124 PetriNetUnfolderBase]: 8629/11916 cut-off events. [2023-08-24 08:03:35,306 INFO L125 PetriNetUnfolderBase]: For 211795/211795 co-relation queries the response was YES. [2023-08-24 08:03:35,346 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 08:03:35,487 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 544 selfloop transitions, 1049 changer transitions 0/1593 dead transitions. [2023-08-24 08:03:35,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 1593 transitions, 29742 flow [2023-08-24 08:03:35,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-08-24 08:03:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-08-24 08:03:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 6651 transitions. [2023-08-24 08:03:35,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502132268327354 [2023-08-24 08:03:35,517 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 6651 transitions. [2023-08-24 08:03:35,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 6651 transitions. [2023-08-24 08:03:35,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:35,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 6651 transitions. [2023-08-24 08:03:35,529 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 08:03:35,539 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 08:03:35,540 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 08:03:35,540 INFO L175 Difference]: Start difference. First operand has 170 places, 517 transitions, 8465 flow. Second operand 79 states and 6651 transitions. [2023-08-24 08:03:35,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 1593 transitions, 29742 flow [2023-08-24 08:03:36,646 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 08:03:36,664 INFO L231 Difference]: Finished difference. Result has 298 places, 1316 transitions, 25638 flow [2023-08-24 08:03:36,665 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 08:03:36,665 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 269 predicate places. [2023-08-24 08:03:36,665 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 1316 transitions, 25638 flow [2023-08-24 08:03:36,666 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 08:03:36,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:36,666 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 08:03:36,674 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 08:03:36,871 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 08:03:36,871 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 08:03:36,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:36,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1647327573, now seen corresponding path program 10 times [2023-08-24 08:03:36,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:36,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075014426] [2023-08-24 08:03:36,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:36,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:37,040 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 08:03:37,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:37,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075014426] [2023-08-24 08:03:37,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075014426] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:37,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405598237] [2023-08-24 08:03:37,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:03:37,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:37,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:37,042 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 08:03:37,043 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 08:03:37,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:03:37,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:03:37,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:03:37,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:37,151 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 08:03:37,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:37,230 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 08:03:37,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405598237] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:37,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:37,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2023-08-24 08:03:37,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399728968] [2023-08-24 08:03:37,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:37,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 08:03:37,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:37,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 08:03:37,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-08-24 08:03:37,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 08:03:37,232 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 08:03:37,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:37,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 08:03:37,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:41,342 INFO L124 PetriNetUnfolderBase]: 9510/13359 cut-off events. [2023-08-24 08:03:41,342 INFO L125 PetriNetUnfolderBase]: For 318482/318482 co-relation queries the response was YES. [2023-08-24 08:03:41,412 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 08:03:41,464 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 751 selfloop transitions, 818 changer transitions 100/1669 dead transitions. [2023-08-24 08:03:41,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 1669 transitions, 34046 flow [2023-08-24 08:03:41,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-24 08:03:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-24 08:03:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2902 transitions. [2023-08-24 08:03:41,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564328405158855 [2023-08-24 08:03:41,483 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2902 transitions. [2023-08-24 08:03:41,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2902 transitions. [2023-08-24 08:03:41,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:41,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2902 transitions. [2023-08-24 08:03:41,488 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 08:03:41,507 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 08:03:41,507 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 08:03:41,507 INFO L175 Difference]: Start difference. First operand has 298 places, 1316 transitions, 25638 flow. Second operand 34 states and 2902 transitions. [2023-08-24 08:03:41,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 1669 transitions, 34046 flow [2023-08-24 08:03:44,021 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 08:03:44,045 INFO L231 Difference]: Finished difference. Result has 346 places, 1383 transitions, 22687 flow [2023-08-24 08:03:44,046 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 08:03:44,046 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 317 predicate places. [2023-08-24 08:03:44,046 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 1383 transitions, 22687 flow [2023-08-24 08:03:44,054 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 08:03:44,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:44,055 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 08:03:44,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-24 08:03:44,259 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 08:03:44,260 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 08:03:44,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:44,261 INFO L85 PathProgramCache]: Analyzing trace with hash -873179864, now seen corresponding path program 11 times [2023-08-24 08:03:44,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:44,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389720044] [2023-08-24 08:03:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:44,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:44,360 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 08:03:44,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389720044] [2023-08-24 08:03:44,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389720044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:44,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997824266] [2023-08-24 08:03:44,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 08:03:44,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:44,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:44,369 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 08:03:44,377 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 08:03:44,434 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:03:44,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:03:44,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 08:03:44,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:44,476 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 08:03:44,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:44,562 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 08:03:44,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997824266] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:44,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:44,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2023-08-24 08:03:44,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656783213] [2023-08-24 08:03:44,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:44,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 08:03:44,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:44,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 08:03:44,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-08-24 08:03:44,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 08:03:44,564 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 08:03:44,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:44,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 08:03:44,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:48,686 INFO L124 PetriNetUnfolderBase]: 10598/14935 cut-off events. [2023-08-24 08:03:48,687 INFO L125 PetriNetUnfolderBase]: For 363215/363215 co-relation queries the response was YES. [2023-08-24 08:03:48,802 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 08:03:48,872 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 1409 selfloop transitions, 482 changer transitions 122/2013 dead transitions. [2023-08-24 08:03:48,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 2013 transitions, 38439 flow [2023-08-24 08:03:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 08:03:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 08:03:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1113 transitions. [2023-08-24 08:03:48,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45783628136569315 [2023-08-24 08:03:48,888 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1113 transitions. [2023-08-24 08:03:48,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1113 transitions. [2023-08-24 08:03:48,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:48,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1113 transitions. [2023-08-24 08:03:48,893 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 08:03:48,912 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 08:03:48,913 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 08:03:48,913 INFO L175 Difference]: Start difference. First operand has 346 places, 1383 transitions, 22687 flow. Second operand 13 states and 1113 transitions. [2023-08-24 08:03:48,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 2013 transitions, 38439 flow [2023-08-24 08:03:53,091 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 08:03:53,116 INFO L231 Difference]: Finished difference. Result has 349 places, 1523 transitions, 25392 flow [2023-08-24 08:03:53,116 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 08:03:53,117 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 320 predicate places. [2023-08-24 08:03:53,117 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 1523 transitions, 25392 flow [2023-08-24 08:03:53,117 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 08:03:53,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:03:53,117 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 08:03:53,122 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 08:03:53,321 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 08:03:53,321 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 08:03:53,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:03:53,321 INFO L85 PathProgramCache]: Analyzing trace with hash 545044568, now seen corresponding path program 12 times [2023-08-24 08:03:53,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:03:53,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077576815] [2023-08-24 08:03:53,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:03:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:03:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:03:53,421 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 08:03:53,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:03:53,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077576815] [2023-08-24 08:03:53,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077576815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:03:53,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321904945] [2023-08-24 08:03:53,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 08:03:53,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:03:53,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:03:53,423 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 08:03:53,426 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 08:03:53,497 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-24 08:03:53,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:03:53,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:03:53,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:03:53,531 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 08:03:53,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:03:53,600 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 08:03:53,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321904945] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:03:53,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:03:53,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-24 08:03:53,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421588884] [2023-08-24 08:03:53,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:03:53,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 08:03:53,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:03:53,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 08:03:53,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-24 08:03:53,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:03:53,603 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 08:03:53,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:03:53,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:03:53,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:03:58,619 INFO L124 PetriNetUnfolderBase]: 10386/14834 cut-off events. [2023-08-24 08:03:58,619 INFO L125 PetriNetUnfolderBase]: For 392827/393229 co-relation queries the response was YES. [2023-08-24 08:03:58,712 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 08:03:58,782 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 1157 selfloop transitions, 395 changer transitions 76/1648 dead transitions. [2023-08-24 08:03:58,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 1648 transitions, 30353 flow [2023-08-24 08:03:58,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 08:03:58,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 08:03:58,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 734 transitions. [2023-08-24 08:03:58,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49064171122994654 [2023-08-24 08:03:58,783 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 734 transitions. [2023-08-24 08:03:58,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 734 transitions. [2023-08-24 08:03:58,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:03:58,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 734 transitions. [2023-08-24 08:03:58,784 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 08:03:58,786 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 08:03:58,786 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 08:03:58,786 INFO L175 Difference]: Start difference. First operand has 349 places, 1523 transitions, 25392 flow. Second operand 8 states and 734 transitions. [2023-08-24 08:03:58,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 1648 transitions, 30353 flow [2023-08-24 08:04:02,224 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 08:04:02,245 INFO L231 Difference]: Finished difference. Result has 356 places, 1496 transitions, 25048 flow [2023-08-24 08:04:02,246 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 08:04:02,246 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 327 predicate places. [2023-08-24 08:04:02,246 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 1496 transitions, 25048 flow [2023-08-24 08:04:02,246 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 08:04:02,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:04:02,246 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 08:04:02,263 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 08:04:02,464 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 08:04:02,464 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 08:04:02,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:04:02,465 INFO L85 PathProgramCache]: Analyzing trace with hash 582363563, now seen corresponding path program 13 times [2023-08-24 08:04:02,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:04:02,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180843134] [2023-08-24 08:04:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:04:02,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:04:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:04:02,543 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 08:04:02,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:04:02,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180843134] [2023-08-24 08:04:02,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180843134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:04:02,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066256364] [2023-08-24 08:04:02,544 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 08:04:02,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:04:02,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:04:02,545 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 08:04:02,547 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 08:04:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:04:02,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:04:02,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:04:02,678 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 08:04:02,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:04:02,738 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 08:04:02,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066256364] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:04:02,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:04:02,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-08-24 08:04:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749177844] [2023-08-24 08:04:02,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:04:02,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 08:04:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:04:02,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 08:04:02,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-08-24 08:04:02,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 08:04:02,741 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 08:04:02,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:04:02,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 08:04:02,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:04:09,191 INFO L124 PetriNetUnfolderBase]: 12236/17337 cut-off events. [2023-08-24 08:04:09,191 INFO L125 PetriNetUnfolderBase]: For 482309/482309 co-relation queries the response was YES. [2023-08-24 08:04:09,376 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 08:04:09,459 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 1471 selfloop transitions, 998 changer transitions 67/2536 dead transitions. [2023-08-24 08:04:09,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 2536 transitions, 50976 flow [2023-08-24 08:04:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-24 08:04:09,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-24 08:04:09,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4175 transitions. [2023-08-24 08:04:09,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556368001746153 [2023-08-24 08:04:09,462 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 4175 transitions. [2023-08-24 08:04:09,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 4175 transitions. [2023-08-24 08:04:09,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:04:09,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 4175 transitions. [2023-08-24 08:04:09,466 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 08:04:09,478 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 08:04:09,479 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 08:04:09,479 INFO L175 Difference]: Start difference. First operand has 356 places, 1496 transitions, 25048 flow. Second operand 49 states and 4175 transitions. [2023-08-24 08:04:09,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 2536 transitions, 50976 flow [2023-08-24 08:04:14,422 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 08:04:14,468 INFO L231 Difference]: Finished difference. Result has 440 places, 1891 transitions, 38107 flow [2023-08-24 08:04:14,469 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 08:04:14,470 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 411 predicate places. [2023-08-24 08:04:14,470 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 1891 transitions, 38107 flow [2023-08-24 08:04:14,470 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 08:04:14,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:04:14,470 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 08:04:14,476 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 08:04:14,674 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 08:04:14,674 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 08:04:14,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:04:14,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1497854770, now seen corresponding path program 14 times [2023-08-24 08:04:14,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:04:14,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259308702] [2023-08-24 08:04:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:04:14,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:04:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:04:14,781 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 08:04:14,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:04:14,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259308702] [2023-08-24 08:04:14,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259308702] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:04:14,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317009488] [2023-08-24 08:04:14,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:04:14,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:04:14,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:04:14,782 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 08:04:14,784 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 08:04:14,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:04:14,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:04:14,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:04:14,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:04:14,904 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 08:04:14,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:04:14,952 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 08:04:14,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317009488] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:04:14,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:04:14,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-24 08:04:14,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84082117] [2023-08-24 08:04:14,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:04:14,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 08:04:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:04:14,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 08:04:14,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-08-24 08:04:14,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 08:04:14,955 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 08:04:14,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:04:14,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 08:04:14,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:04:23,208 INFO L124 PetriNetUnfolderBase]: 13363/18658 cut-off events. [2023-08-24 08:04:23,208 INFO L125 PetriNetUnfolderBase]: For 740720/740720 co-relation queries the response was YES. [2023-08-24 08:04:23,578 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 08:04:23,691 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 1375 selfloop transitions, 1280 changer transitions 39/2694 dead transitions. [2023-08-24 08:04:23,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 2694 transitions, 60899 flow [2023-08-24 08:04:23,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-24 08:04:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-24 08:04:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3253 transitions. [2023-08-24 08:04:23,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577821559245708 [2023-08-24 08:04:23,694 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3253 transitions. [2023-08-24 08:04:23,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3253 transitions. [2023-08-24 08:04:23,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:04:23,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3253 transitions. [2023-08-24 08:04:23,711 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 08:04:23,715 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 08:04:23,716 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 08:04:23,716 INFO L175 Difference]: Start difference. First operand has 440 places, 1891 transitions, 38107 flow. Second operand 38 states and 3253 transitions. [2023-08-24 08:04:23,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 2694 transitions, 60899 flow [2023-08-24 08:04:32,810 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 08:04:32,845 INFO L231 Difference]: Finished difference. Result has 489 places, 2138 transitions, 43838 flow [2023-08-24 08:04:32,846 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 08:04:32,846 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 460 predicate places. [2023-08-24 08:04:32,846 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 2138 transitions, 43838 flow [2023-08-24 08:04:32,846 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 08:04:32,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:04:32,846 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 08:04:32,850 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 08:04:33,050 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 08:04:33,051 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 08:04:33,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:04:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1321961705, now seen corresponding path program 15 times [2023-08-24 08:04:33,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:04:33,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340742443] [2023-08-24 08:04:33,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:04:33,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:04:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:04:33,167 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 08:04:33,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:04:33,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340742443] [2023-08-24 08:04:33,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340742443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:04:33,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910896786] [2023-08-24 08:04:33,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:04:33,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:04:33,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:04:33,168 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 08:04:33,201 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 08:04:33,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 08:04:33,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:04:33,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:04:33,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:04:33,295 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 08:04:33,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:04:33,355 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 08:04:33,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910896786] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:04:33,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:04:33,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-08-24 08:04:33,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233787930] [2023-08-24 08:04:33,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:04:33,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 08:04:33,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:04:33,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 08:04:33,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-08-24 08:04:33,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 08:04:33,357 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 08:04:33,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:04:33,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 08:04:33,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:04:42,411 INFO L124 PetriNetUnfolderBase]: 15006/20791 cut-off events. [2023-08-24 08:04:42,411 INFO L125 PetriNetUnfolderBase]: For 818284/818284 co-relation queries the response was YES. [2023-08-24 08:04:42,723 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 08:04:42,818 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 1564 selfloop transitions, 1205 changer transitions 39/2808 dead transitions. [2023-08-24 08:04:42,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 2808 transitions, 62566 flow [2023-08-24 08:04:42,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-24 08:04:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-24 08:04:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2132 transitions. [2023-08-24 08:04:42,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560427807486631 [2023-08-24 08:04:42,821 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2132 transitions. [2023-08-24 08:04:42,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2132 transitions. [2023-08-24 08:04:42,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:04:42,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2132 transitions. [2023-08-24 08:04:42,824 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 08:04:42,846 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 08:04:42,847 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 08:04:42,847 INFO L175 Difference]: Start difference. First operand has 489 places, 2138 transitions, 43838 flow. Second operand 25 states and 2132 transitions. [2023-08-24 08:04:42,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 2808 transitions, 62566 flow [2023-08-24 08:04:52,987 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 08:04:53,026 INFO L231 Difference]: Finished difference. Result has 501 places, 2416 transitions, 48883 flow [2023-08-24 08:04:53,027 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 08:04:53,027 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 472 predicate places. [2023-08-24 08:04:53,027 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 2416 transitions, 48883 flow [2023-08-24 08:04:53,027 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 08:04:53,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:04:53,027 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 08:04:53,047 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 08:04:53,232 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 08:04:53,232 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 08:04:53,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:04:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1035886221, now seen corresponding path program 16 times [2023-08-24 08:04:53,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:04:53,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33803285] [2023-08-24 08:04:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:04:53,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:04:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:04:53,325 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 08:04:53,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:04:53,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33803285] [2023-08-24 08:04:53,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33803285] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:04:53,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092844834] [2023-08-24 08:04:53,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:04:53,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:04:53,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:04:53,326 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 08:04:53,328 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 08:04:53,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:04:53,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:04:53,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:04:53,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:04:53,454 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 08:04:53,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:04:53,518 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 08:04:53,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092844834] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:04:53,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:04:53,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-08-24 08:04:53,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894150691] [2023-08-24 08:04:53,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:04:53,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 08:04:53,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:04:53,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 08:04:53,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-08-24 08:04:53,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 08:04:53,520 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 08:04:53,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:04:53,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 08:04:53,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:05:04,629 INFO L124 PetriNetUnfolderBase]: 17279/23890 cut-off events. [2023-08-24 08:05:04,629 INFO L125 PetriNetUnfolderBase]: For 877097/877097 co-relation queries the response was YES. [2023-08-24 08:05:04,883 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 08:05:04,998 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 1714 selfloop transitions, 1440 changer transitions 67/3221 dead transitions. [2023-08-24 08:05:04,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 3221 transitions, 69979 flow [2023-08-24 08:05:04,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-24 08:05:04,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-24 08:05:05,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3868 transitions. [2023-08-24 08:05:05,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44966286910020925 [2023-08-24 08:05:05,001 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3868 transitions. [2023-08-24 08:05:05,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3868 transitions. [2023-08-24 08:05:05,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:05:05,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3868 transitions. [2023-08-24 08:05:05,005 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 08:05:05,008 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 08:05:05,009 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 08:05:05,009 INFO L175 Difference]: Start difference. First operand has 501 places, 2416 transitions, 48883 flow. Second operand 46 states and 3868 transitions. [2023-08-24 08:05:05,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 3221 transitions, 69979 flow [2023-08-24 08:05:18,711 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 08:05:18,757 INFO L231 Difference]: Finished difference. Result has 566 places, 2787 transitions, 60016 flow [2023-08-24 08:05:18,758 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 08:05:18,758 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 537 predicate places. [2023-08-24 08:05:18,758 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 2787 transitions, 60016 flow [2023-08-24 08:05:18,759 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 08:05:18,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:05:18,759 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 08:05:18,771 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 08:05:18,963 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 08:05:18,964 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 08:05:18,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:05:18,964 INFO L85 PathProgramCache]: Analyzing trace with hash -578957957, now seen corresponding path program 17 times [2023-08-24 08:05:18,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:05:18,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671293870] [2023-08-24 08:05:18,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:05:18,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:05:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:05:19,030 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 08:05:19,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:05:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671293870] [2023-08-24 08:05:19,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671293870] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:05:19,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611558054] [2023-08-24 08:05:19,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 08:05:19,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:05:19,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:05:19,031 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 08:05:19,033 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 08:05:19,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:05:19,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:05:19,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:05:19,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:05:19,156 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 08:05:19,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:05:19,199 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 08:05:19,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611558054] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:05:19,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:05:19,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-08-24 08:05:19,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742805632] [2023-08-24 08:05:19,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:05:19,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 08:05:19,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:05:19,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 08:05:19,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-08-24 08:05:19,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 08:05:19,201 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 08:05:19,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:05:19,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 08:05:19,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:05:35,398 INFO L124 PetriNetUnfolderBase]: 22113/30274 cut-off events. [2023-08-24 08:05:35,398 INFO L125 PetriNetUnfolderBase]: For 1075096/1075096 co-relation queries the response was YES. [2023-08-24 08:05:35,925 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 08:05:36,122 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 3032 selfloop transitions, 1997 changer transitions 173/5202 dead transitions. [2023-08-24 08:05:36,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 5202 transitions, 126759 flow [2023-08-24 08:05:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-24 08:05:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-24 08:05:36,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4207 transitions. [2023-08-24 08:05:36,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4499465240641711 [2023-08-24 08:05:36,126 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 4207 transitions. [2023-08-24 08:05:36,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 4207 transitions. [2023-08-24 08:05:36,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:05:36,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 4207 transitions. [2023-08-24 08:05:36,131 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 08:05:36,135 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 08:05:36,135 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 08:05:36,135 INFO L175 Difference]: Start difference. First operand has 566 places, 2787 transitions, 60016 flow. Second operand 50 states and 4207 transitions. [2023-08-24 08:05:36,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 5202 transitions, 126759 flow [2023-08-24 08:05:58,097 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 08:05:58,166 INFO L231 Difference]: Finished difference. Result has 635 places, 3691 transitions, 88876 flow [2023-08-24 08:05:58,168 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 08:05:58,169 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 606 predicate places. [2023-08-24 08:05:58,169 INFO L495 AbstractCegarLoop]: Abstraction has has 635 places, 3691 transitions, 88876 flow [2023-08-24 08:05:58,169 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 08:05:58,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:05:58,169 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 08:05:58,175 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 08:05:58,373 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 08:05:58,374 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 08:05:58,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:05:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash -505830649, now seen corresponding path program 18 times [2023-08-24 08:05:58,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:05:58,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500754069] [2023-08-24 08:05:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:05:58,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:05:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:05:58,447 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 08:05:58,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:05:58,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500754069] [2023-08-24 08:05:58,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500754069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:05:58,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551206578] [2023-08-24 08:05:58,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 08:05:58,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:05:58,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:05:58,449 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 08:05:58,469 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 08:05:58,558 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 08:05:58,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:05:58,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:05:58,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:05:58,602 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 08:05:58,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:05:58,649 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 08:05:58,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551206578] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:05:58,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:05:58,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-08-24 08:05:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165953394] [2023-08-24 08:05:58,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:05:58,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 08:05:58,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:05:58,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 08:05:58,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-08-24 08:05:58,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:05:58,651 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 08:05:58,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:05:58,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:05:58,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:06:24,621 INFO L124 PetriNetUnfolderBase]: 28002/38232 cut-off events. [2023-08-24 08:06:24,621 INFO L125 PetriNetUnfolderBase]: For 1795680/1795825 co-relation queries the response was YES. [2023-08-24 08:06:26,094 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 08:06:26,337 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 3327 selfloop transitions, 2177 changer transitions 59/5635 dead transitions. [2023-08-24 08:06:26,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 5635 transitions, 151616 flow [2023-08-24 08:06:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 08:06:26,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 08:06:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2132 transitions. [2023-08-24 08:06:26,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750445632798574 [2023-08-24 08:06:26,339 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2132 transitions. [2023-08-24 08:06:26,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2132 transitions. [2023-08-24 08:06:26,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:06:26,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2132 transitions. [2023-08-24 08:06:26,341 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 08:06:26,343 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 08:06:26,343 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 08:06:26,343 INFO L175 Difference]: Start difference. First operand has 635 places, 3691 transitions, 88876 flow. Second operand 24 states and 2132 transitions. [2023-08-24 08:06:26,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 5635 transitions, 151616 flow [2023-08-24 08:07:07,850 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 08:07:07,950 INFO L231 Difference]: Finished difference. Result has 657 places, 4501 transitions, 113019 flow [2023-08-24 08:07:07,953 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 08:07:07,953 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 628 predicate places. [2023-08-24 08:07:07,953 INFO L495 AbstractCegarLoop]: Abstraction has has 657 places, 4501 transitions, 113019 flow [2023-08-24 08:07:07,953 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 08:07:07,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:07:07,953 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 08:07:07,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-24 08:07:08,157 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 08:07:08,157 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 08:07:08,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:07:08,158 INFO L85 PathProgramCache]: Analyzing trace with hash 480064711, now seen corresponding path program 19 times [2023-08-24 08:07:08,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:07:08,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801339611] [2023-08-24 08:07:08,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:07:08,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:07:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:07:08,228 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 08:07:08,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:07:08,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801339611] [2023-08-24 08:07:08,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801339611] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:07:08,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059110477] [2023-08-24 08:07:08,228 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 08:07:08,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:07:08,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:07:08,245 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 08:07:08,258 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 08:07:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:07:08,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:07:08,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:07:08,369 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 08:07:08,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:07:08,420 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 08:07:08,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059110477] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:07:08,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:07:08,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-08-24 08:07:08,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933329760] [2023-08-24 08:07:08,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:07:08,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 08:07:08,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:07:08,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 08:07:08,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-24 08:07:08,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:07:08,422 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 08:07:08,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:07:08,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:07:08,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:07:46,298 INFO L124 PetriNetUnfolderBase]: 34329/46478 cut-off events. [2023-08-24 08:07:46,298 INFO L125 PetriNetUnfolderBase]: For 2237061/2237174 co-relation queries the response was YES. [2023-08-24 08:07:47,896 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 08:07:48,178 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 4605 selfloop transitions, 1452 changer transitions 42/6171 dead transitions. [2023-08-24 08:07:48,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 6171 transitions, 164774 flow [2023-08-24 08:07:48,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 08:07:48,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 08:07:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1242 transitions. [2023-08-24 08:07:48,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744079449961803 [2023-08-24 08:07:48,179 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1242 transitions. [2023-08-24 08:07:48,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1242 transitions. [2023-08-24 08:07:48,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:07:48,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1242 transitions. [2023-08-24 08:07:48,181 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 08:07:48,182 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 08:07:48,182 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 08:07:48,182 INFO L175 Difference]: Start difference. First operand has 657 places, 4501 transitions, 113019 flow. Second operand 14 states and 1242 transitions. [2023-08-24 08:07:48,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 6171 transitions, 164774 flow [2023-08-24 08:08:57,479 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 08:08:57,574 INFO L231 Difference]: Finished difference. Result has 677 places, 5445 transitions, 135961 flow [2023-08-24 08:08:57,577 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 08:08:57,577 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 648 predicate places. [2023-08-24 08:08:57,577 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 5445 transitions, 135961 flow [2023-08-24 08:08:57,577 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 08:08:57,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:08:57,578 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 08:08:57,584 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 08:08:57,781 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 08:08:57,782 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 08:08:57,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:08:57,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1834528069, now seen corresponding path program 20 times [2023-08-24 08:08:57,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:08:57,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265154928] [2023-08-24 08:08:57,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:08:57,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:08:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:08:57,849 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 08:08:57,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:08:57,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265154928] [2023-08-24 08:08:57,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265154928] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:08:57,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416289701] [2023-08-24 08:08:57,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:08:57,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:08:57,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:08:57,850 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 08:08:57,852 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 08:08:57,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:08:57,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:08:57,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:08:57,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:08:57,976 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 08:08:57,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:08:58,022 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 08:08:58,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416289701] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:08:58,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:08:58,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-08-24 08:08:58,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447401389] [2023-08-24 08:08:58,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:08:58,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 08:08:58,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:08:58,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 08:08:58,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-08-24 08:08:58,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:08:58,025 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 08:08:58,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:08:58,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:08:58,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:09:46,289 INFO L124 PetriNetUnfolderBase]: 38278/52119 cut-off events. [2023-08-24 08:09:46,290 INFO L125 PetriNetUnfolderBase]: For 2514496/2514690 co-relation queries the response was YES. [2023-08-24 08:09:48,596 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 08:09:48,937 INFO L140 encePairwiseOnDemand]: 180/187 looper letters, 4312 selfloop transitions, 2481 changer transitions 42/6907 dead transitions. [2023-08-24 08:09:48,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 6907 transitions, 190391 flow [2023-08-24 08:09:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-24 08:09:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-24 08:09:48,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2042 transitions. [2023-08-24 08:09:48,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47477330853289934 [2023-08-24 08:09:48,939 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2042 transitions. [2023-08-24 08:09:48,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2042 transitions. [2023-08-24 08:09:48,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:09:48,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2042 transitions. [2023-08-24 08:09:48,942 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 08:09:48,958 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 08:09:48,959 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 08:09:48,959 INFO L175 Difference]: Start difference. First operand has 677 places, 5445 transitions, 135961 flow. Second operand 23 states and 2042 transitions. [2023-08-24 08:09:48,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 6907 transitions, 190391 flow [2023-08-24 08:11:18,895 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 08:11:19,007 INFO L231 Difference]: Finished difference. Result has 708 places, 5884 transitions, 153048 flow [2023-08-24 08:11:19,010 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 08:11:19,011 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 679 predicate places. [2023-08-24 08:11:19,011 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 5884 transitions, 153048 flow [2023-08-24 08:11:19,011 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 08:11:19,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:11:19,011 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 08:11:19,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-24 08:11:19,215 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 08:11:19,215 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 08:11:19,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:11:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1361342201, now seen corresponding path program 21 times [2023-08-24 08:11:19,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:11:19,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847874129] [2023-08-24 08:11:19,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:11:19,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:11:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:11:19,283 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 08:11:19,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:11:19,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847874129] [2023-08-24 08:11:19,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847874129] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:11:19,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860986342] [2023-08-24 08:11:19,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:11:19,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:11:19,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:11:19,285 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 08:11:19,305 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 08:11:19,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 08:11:19,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:11:19,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:11:19,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:11:19,437 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 08:11:19,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:11:19,481 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 08:11:19,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860986342] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:11:19,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:11:19,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-08-24 08:11:19,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759322034] [2023-08-24 08:11:19,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:11:19,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 08:11:19,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:11:19,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 08:11:19,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-24 08:11:19,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-24 08:11:19,483 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 08:11:19,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:11:19,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-24 08:11:19,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:12:15,852 INFO L124 PetriNetUnfolderBase]: 38653/52782 cut-off events. [2023-08-24 08:12:15,852 INFO L125 PetriNetUnfolderBase]: For 2608422/2608543 co-relation queries the response was YES. [2023-08-24 08:12:18,059 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 08:12:18,528 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 4022 selfloop transitions, 2804 changer transitions 78/6976 dead transitions. [2023-08-24 08:12:18,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 6976 transitions, 196114 flow [2023-08-24 08:12:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 08:12:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 08:12:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1683 transitions. [2023-08-24 08:12:18,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-08-24 08:12:18,530 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1683 transitions. [2023-08-24 08:12:18,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1683 transitions. [2023-08-24 08:12:18,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:12:18,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1683 transitions. [2023-08-24 08:12:18,532 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 08:12:18,533 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 08:12:18,534 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 08:12:18,534 INFO L175 Difference]: Start difference. First operand has 708 places, 5884 transitions, 153048 flow. Second operand 19 states and 1683 transitions. [2023-08-24 08:12:18,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 6976 transitions, 196114 flow [2023-08-24 08:13:50,978 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 08:13:51,097 INFO L231 Difference]: Finished difference. Result has 724 places, 5889 transitions, 157786 flow [2023-08-24 08:13:51,100 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 08:13:51,101 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 695 predicate places. [2023-08-24 08:13:51,101 INFO L495 AbstractCegarLoop]: Abstraction has has 724 places, 5889 transitions, 157786 flow [2023-08-24 08:13:51,101 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 08:13:51,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:13:51,101 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 08:13:51,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-24 08:13:51,305 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 08:13:51,305 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 08:13:51,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:13:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash 27806599, now seen corresponding path program 22 times [2023-08-24 08:13:51,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:13:51,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355253636] [2023-08-24 08:13:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:13:51,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:13:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:13:51,429 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 08:13:51,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:13:51,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355253636] [2023-08-24 08:13:51,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355253636] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:13:51,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982454771] [2023-08-24 08:13:51,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:13:51,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:13:51,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:13:51,433 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 08:13:51,434 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 08:13:51,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:13:51,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:13:51,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:13:51,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:13:51,563 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 08:13:51,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:13:51,621 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 08:13:51,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982454771] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:13:51,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:13:51,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-24 08:13:51,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423400479] [2023-08-24 08:13:51,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:13:51,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 08:13:51,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:13:51,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 08:13:51,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-08-24 08:13:51,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 187 [2023-08-24 08:13:51,624 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 08:13:51,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:13:51,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 187 [2023-08-24 08:13:51,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:15,055 INFO L124 PetriNetUnfolderBase]: 50438/68823 cut-off events. [2023-08-24 08:15:15,056 INFO L125 PetriNetUnfolderBase]: For 4134816/4134816 co-relation queries the response was YES. [2023-08-24 08:15:18,408 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 08:15:18,860 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 5865 selfloop transitions, 3084 changer transitions 96/9045 dead transitions. [2023-08-24 08:15:18,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 783 places, 9045 transitions, 267711 flow [2023-08-24 08:15:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-08-24 08:15:18,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-08-24 08:15:18,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 5155 transitions. [2023-08-24 08:15:18,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45191549048829666 [2023-08-24 08:15:18,863 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 5155 transitions. [2023-08-24 08:15:18,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 5155 transitions. [2023-08-24 08:15:18,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:18,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 5155 transitions. [2023-08-24 08:15:18,868 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 08:15:18,872 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 08:15:18,873 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 08:15:18,873 INFO L175 Difference]: Start difference. First operand has 724 places, 5889 transitions, 157786 flow. Second operand 61 states and 5155 transitions. [2023-08-24 08:15:18,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 783 places, 9045 transitions, 267711 flow Received shutdown request... [2023-08-24 08:16:49,521 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 08:16:49,527 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 08:16:49,566 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 08:16:49,572 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 08:16:49,770 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 08:16:49,770 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-24 08:16:49,771 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 08:16:49,772 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 08:16:49,772 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 08:16:49,772 INFO L445 BasicCegarLoop]: Path program histogram: [22, 7, 2, 1, 1, 1] [2023-08-24 08:16:49,774 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 08:16:49,774 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 08:16:49,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 08:16:49 BasicIcfg [2023-08-24 08:16:49,775 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 08:16:49,776 INFO L158 Benchmark]: Toolchain (without parser) took 821233.79ms. Allocated memory was 377.5MB in the beginning and 12.4GB in the end (delta: 12.1GB). Free memory was 354.2MB in the beginning and 6.3GB in the end (delta: -6.0GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. [2023-08-24 08:16:49,776 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 377.5MB. Free memory is still 353.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 08:16:49,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.02ms. Allocated memory is still 377.5MB. Free memory was 354.2MB in the beginning and 343.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-24 08:16:49,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.74ms. Allocated memory is still 377.5MB. Free memory was 343.1MB in the beginning and 341.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 08:16:49,776 INFO L158 Benchmark]: Boogie Preprocessor took 36.05ms. Allocated memory is still 377.5MB. Free memory was 341.5MB in the beginning and 340.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 08:16:49,777 INFO L158 Benchmark]: RCFGBuilder took 346.90ms. Allocated memory is still 377.5MB. Free memory was 340.1MB in the beginning and 326.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 08:16:49,777 INFO L158 Benchmark]: TraceAbstraction took 820655.53ms. Allocated memory was 377.5MB in the beginning and 12.4GB in the end (delta: 12.1GB). Free memory was 325.7MB in the beginning and 6.3GB in the end (delta: -6.0GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. [2023-08-24 08:16:49,778 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 377.5MB. Free memory is still 353.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 172.02ms. Allocated memory is still 377.5MB. Free memory was 354.2MB in the beginning and 343.1MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 19.74ms. Allocated memory is still 377.5MB. Free memory was 343.1MB in the beginning and 341.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.05ms. Allocated memory is still 377.5MB. Free memory was 341.5MB in the beginning and 340.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 346.90ms. Allocated memory is still 377.5MB. Free memory was 340.1MB in the beginning and 326.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 820655.53ms. Allocated memory was 377.5MB in the beginning and 12.4GB in the end (delta: 12.1GB). Free memory was 325.7MB in the beginning and 6.3GB in the end (delta: -6.0GB). Peak memory consumption was 8.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 98 PlacesBefore, 29 PlacesAfterwards, 95 TransitionsBefore, 22 TransitionsAfterwards, 1518 CoEnabledTransitionPairs, 6 FixpointIterations, 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: 820.5s, OverallIterations: 34, TraceHistogramMax: 2, PathProgramHistogramMax: 22, EmptinessCheckTime: 0.0s, AutomataDifference: 799.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3069 SdHoareTripleChecker+Valid, 8.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3069 mSDsluCounter, 1063 SdHoareTripleChecker+Invalid, 6.6s 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, 6.4s 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: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 11.3s 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