/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 01:14:52,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 01:14:52,160 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 01:14:52,165 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 01:14:52,166 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 01:14:52,204 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 01:14:52,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 01:14:52,207 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 01:14:52,207 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 01:14:52,208 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 01:14:52,208 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 01:14:52,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 01:14:52,209 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 01:14:52,209 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 01:14:52,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 01:14:52,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 01:14:52,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 01:14:52,210 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 01:14:52,211 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 01:14:52,211 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 01:14:52,211 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 01:14:52,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 01:14:52,216 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 01:14:52,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 01:14:52,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 01:14:52,217 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 01:14:52,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 01:14:52,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:14:52,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 01:14:52,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 01:14:52,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 01:14:52,219 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 01:14:52,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 01:14:52,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 01:14:52,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 01:14:52,220 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 01:14:52,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 01:14:52,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 01:14:52,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 01:14:52,539 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 01:14:52,541 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 01:14:52,542 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-08-24 01:14:53,704 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 01:14:53,946 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 01:14:53,947 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2023-08-24 01:14:53,952 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/811195f15/03a96756a2054a468f5daed96582a234/FLAG3d4aa59e0 [2023-08-24 01:14:53,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/811195f15/03a96756a2054a468f5daed96582a234 [2023-08-24 01:14:53,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 01:14:53,965 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 01:14:53,966 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 01:14:53,966 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 01:14:53,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 01:14:53,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:14:53" (1/1) ... [2023-08-24 01:14:53,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e69fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:53, skipping insertion in model container [2023-08-24 01:14:53,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:14:53" (1/1) ... [2023-08-24 01:14:53,989 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 01:14:54,126 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2023-08-24 01:14:54,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:14:54,138 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 01:14:54,162 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c[3345,3358] [2023-08-24 01:14:54,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:14:54,178 INFO L206 MainTranslator]: Completed translation [2023-08-24 01:14:54,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54 WrapperNode [2023-08-24 01:14:54,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 01:14:54,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 01:14:54,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 01:14:54,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 01:14:54,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (1/1) ... [2023-08-24 01:14:54,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (1/1) ... [2023-08-24 01:14:54,229 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 188 [2023-08-24 01:14:54,230 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 01:14:54,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 01:14:54,230 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 01:14:54,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 01:14:54,242 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (1/1) ... [2023-08-24 01:14:54,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (1/1) ... [2023-08-24 01:14:54,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (1/1) ... [2023-08-24 01:14:54,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (1/1) ... [2023-08-24 01:14:54,264 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (1/1) ... [2023-08-24 01:14:54,281 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (1/1) ... [2023-08-24 01:14:54,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (1/1) ... [2023-08-24 01:14:54,284 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (1/1) ... [2023-08-24 01:14:54,287 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 01:14:54,287 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 01:14:54,288 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 01:14:54,288 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 01:14:54,288 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (1/1) ... [2023-08-24 01:14:54,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:14:54,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:14:54,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 01:14:54,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 01:14:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 01:14:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 01:14:54,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 01:14:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 01:14:54,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 01:14:54,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 01:14:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 01:14:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 01:14:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 01:14:54,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 01:14:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 01:14:54,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 01:14:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 01:14:54,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 01:14:54,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 01:14:54,354 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 01:14:54,482 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 01:14:54,486 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 01:14:54,832 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 01:14:54,840 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 01:14:54,841 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-24 01:14:54,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:14:54 BoogieIcfgContainer [2023-08-24 01:14:54,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 01:14:54,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 01:14:54,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 01:14:54,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 01:14:54,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:14:53" (1/3) ... [2023-08-24 01:14:54,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ba6020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:14:54, skipping insertion in model container [2023-08-24 01:14:54,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:14:54" (2/3) ... [2023-08-24 01:14:54,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ba6020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:14:54, skipping insertion in model container [2023-08-24 01:14:54,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:14:54" (3/3) ... [2023-08-24 01:14:54,851 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2023-08-24 01:14:54,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 01:14:54,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 01:14:54,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 01:14:54,962 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 01:14:54,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 284 places, 303 transitions, 630 flow [2023-08-24 01:14:55,150 INFO L124 PetriNetUnfolderBase]: 29/300 cut-off events. [2023-08-24 01:14:55,151 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:14:55,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 300 events. 29/300 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 392 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 237. Up to 3 conditions per place. [2023-08-24 01:14:55,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 284 places, 303 transitions, 630 flow [2023-08-24 01:14:55,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 271 places, 290 transitions, 598 flow [2023-08-24 01:14:55,175 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 01:14:55,190 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 271 places, 290 transitions, 598 flow [2023-08-24 01:14:55,194 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 271 places, 290 transitions, 598 flow [2023-08-24 01:14:55,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 290 transitions, 598 flow [2023-08-24 01:14:55,237 INFO L124 PetriNetUnfolderBase]: 29/290 cut-off events. [2023-08-24 01:14:55,238 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:14:55,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 290 events. 29/290 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 392 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 237. Up to 3 conditions per place. [2023-08-24 01:14:55,243 INFO L119 LiptonReduction]: Number of co-enabled transitions 7998 [2023-08-24 01:15:04,009 INFO L134 LiptonReduction]: Checked pairs total: 10353 [2023-08-24 01:15:04,009 INFO L136 LiptonReduction]: Total number of compositions: 318 [2023-08-24 01:15:04,020 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 01:15:04,025 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;@913a1a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 01:15:04,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 01:15:04,031 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 01:15:04,032 INFO L124 PetriNetUnfolderBase]: 11/38 cut-off events. [2023-08-24 01:15:04,032 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:15:04,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:04,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:04,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:04,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:04,037 INFO L85 PathProgramCache]: Analyzing trace with hash -895638781, now seen corresponding path program 1 times [2023-08-24 01:15:04,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:04,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458709506] [2023-08-24 01:15:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:04,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:04,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:04,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458709506] [2023-08-24 01:15:04,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458709506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:04,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:04,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 01:15:04,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134091860] [2023-08-24 01:15:04,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:04,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:15:04,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:04,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:15:04,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:15:04,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 621 [2023-08-24 01:15:04,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 39 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:04,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:04,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 621 [2023-08-24 01:15:04,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:04,834 INFO L124 PetriNetUnfolderBase]: 1270/1711 cut-off events. [2023-08-24 01:15:04,834 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-08-24 01:15:04,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3571 conditions, 1711 events. 1270/1711 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5691 event pairs, 585 based on Foata normal form. 1/1131 useless extension candidates. Maximal degree in co-relation 2914. Up to 1321 conditions per place. [2023-08-24 01:15:04,843 INFO L140 encePairwiseOnDemand]: 618/621 looper letters, 35 selfloop transitions, 0 changer transitions 26/61 dead transitions. [2023-08-24 01:15:04,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 61 transitions, 277 flow [2023-08-24 01:15:04,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:15:04,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:15:04,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 893 transitions. [2023-08-24 01:15:04,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793344068706388 [2023-08-24 01:15:04,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 893 transitions. [2023-08-24 01:15:04,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 893 transitions. [2023-08-24 01:15:04,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:04,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 893 transitions. [2023-08-24 01:15:04,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.6666666666667) internal successors, (893), 3 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:04,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:04,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 621.0) internal successors, (2484), 4 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:04,880 INFO L175 Difference]: Start difference. First operand has 38 places, 39 transitions, 96 flow. Second operand 3 states and 893 transitions. [2023-08-24 01:15:04,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 61 transitions, 277 flow [2023-08-24 01:15:04,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 61 transitions, 255 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 01:15:04,887 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 78 flow [2023-08-24 01:15:04,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2023-08-24 01:15:04,891 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2023-08-24 01:15:04,891 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 78 flow [2023-08-24 01:15:04,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:04,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:04,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:04,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 01:15:04,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:04,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:04,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1747076342, now seen corresponding path program 1 times [2023-08-24 01:15:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:04,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233950328] [2023-08-24 01:15:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:04,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:05,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:05,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233950328] [2023-08-24 01:15:05,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233950328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:05,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:05,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:05,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929437249] [2023-08-24 01:15:05,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:05,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:15:05,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:05,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:15:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:15:05,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 621 [2023-08-24 01:15:05,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:05,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:05,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 621 [2023-08-24 01:15:05,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:05,988 INFO L124 PetriNetUnfolderBase]: 742/1039 cut-off events. [2023-08-24 01:15:05,989 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-24 01:15:05,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1039 events. 742/1039 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3762 event pairs, 47 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 2112. Up to 750 conditions per place. [2023-08-24 01:15:05,994 INFO L140 encePairwiseOnDemand]: 617/621 looper letters, 65 selfloop transitions, 2 changer transitions 10/77 dead transitions. [2023-08-24 01:15:05,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 77 transitions, 327 flow [2023-08-24 01:15:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:15:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:15:05,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1378 transitions. [2023-08-24 01:15:05,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44380032206119163 [2023-08-24 01:15:05,999 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1378 transitions. [2023-08-24 01:15:05,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1378 transitions. [2023-08-24 01:15:06,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:06,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1378 transitions. [2023-08-24 01:15:06,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.6) internal successors, (1378), 5 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:06,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:06,011 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:06,011 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 78 flow. Second operand 5 states and 1378 transitions. [2023-08-24 01:15:06,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 77 transitions, 327 flow [2023-08-24 01:15:06,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 77 transitions, 323 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 01:15:06,014 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 91 flow [2023-08-24 01:15:06,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-08-24 01:15:06,015 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-08-24 01:15:06,016 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 91 flow [2023-08-24 01:15:06,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:06,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:06,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:06,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 01:15:06,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:06,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:06,022 INFO L85 PathProgramCache]: Analyzing trace with hash -621624874, now seen corresponding path program 2 times [2023-08-24 01:15:06,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:06,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187099522] [2023-08-24 01:15:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:06,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:06,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187099522] [2023-08-24 01:15:06,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187099522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:06,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:06,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:06,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061871115] [2023-08-24 01:15:06,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:06,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:15:06,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:06,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:15:06,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:15:06,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 621 [2023-08-24 01:15:06,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:06,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:06,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 621 [2023-08-24 01:15:06,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:06,957 INFO L124 PetriNetUnfolderBase]: 804/1161 cut-off events. [2023-08-24 01:15:06,957 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2023-08-24 01:15:06,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 1161 events. 804/1161 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4107 event pairs, 393 based on Foata normal form. 1/929 useless extension candidates. Maximal degree in co-relation 2564. Up to 895 conditions per place. [2023-08-24 01:15:06,963 INFO L140 encePairwiseOnDemand]: 617/621 looper letters, 60 selfloop transitions, 3 changer transitions 10/73 dead transitions. [2023-08-24 01:15:06,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 333 flow [2023-08-24 01:15:06,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:15:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:15:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1373 transitions. [2023-08-24 01:15:06,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421900161030596 [2023-08-24 01:15:06,967 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1373 transitions. [2023-08-24 01:15:06,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1373 transitions. [2023-08-24 01:15:06,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:06,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1373 transitions. [2023-08-24 01:15:06,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 274.6) internal successors, (1373), 5 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:06,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:06,976 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:06,976 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 91 flow. Second operand 5 states and 1373 transitions. [2023-08-24 01:15:06,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 333 flow [2023-08-24 01:15:06,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 73 transitions, 324 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-24 01:15:06,981 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 108 flow [2023-08-24 01:15:06,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-08-24 01:15:06,982 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-08-24 01:15:06,985 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 108 flow [2023-08-24 01:15:06,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:06,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:06,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:06,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 01:15:06,987 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:06,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:06,987 INFO L85 PathProgramCache]: Analyzing trace with hash 800620124, now seen corresponding path program 3 times [2023-08-24 01:15:06,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:06,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212177898] [2023-08-24 01:15:06,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:06,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:07,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:07,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:07,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212177898] [2023-08-24 01:15:07,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212177898] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:07,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:07,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:07,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888240362] [2023-08-24 01:15:07,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:07,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:15:07,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:07,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:15:07,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:15:07,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 621 [2023-08-24 01:15:07,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:07,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:07,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 621 [2023-08-24 01:15:07,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:07,926 INFO L124 PetriNetUnfolderBase]: 884/1293 cut-off events. [2023-08-24 01:15:07,927 INFO L125 PetriNetUnfolderBase]: For 756/756 co-relation queries the response was YES. [2023-08-24 01:15:07,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3042 conditions, 1293 events. 884/1293 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5261 event pairs, 77 based on Foata normal form. 1/1033 useless extension candidates. Maximal degree in co-relation 3033. Up to 904 conditions per place. [2023-08-24 01:15:07,934 INFO L140 encePairwiseOnDemand]: 617/621 looper letters, 67 selfloop transitions, 3 changer transitions 11/81 dead transitions. [2023-08-24 01:15:07,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 81 transitions, 385 flow [2023-08-24 01:15:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:15:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:15:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1380 transitions. [2023-08-24 01:15:07,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-24 01:15:07,938 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1380 transitions. [2023-08-24 01:15:07,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1380 transitions. [2023-08-24 01:15:07,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:07,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1380 transitions. [2023-08-24 01:15:07,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 276.0) internal successors, (1380), 5 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:07,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:07,947 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:07,948 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 108 flow. Second operand 5 states and 1380 transitions. [2023-08-24 01:15:07,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 81 transitions, 385 flow [2023-08-24 01:15:07,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 81 transitions, 374 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-24 01:15:07,951 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 123 flow [2023-08-24 01:15:07,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-08-24 01:15:07,952 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 8 predicate places. [2023-08-24 01:15:07,952 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 123 flow [2023-08-24 01:15:07,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:07,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:07,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:07,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 01:15:07,953 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:07,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1515158204, now seen corresponding path program 4 times [2023-08-24 01:15:07,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:07,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944873781] [2023-08-24 01:15:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:07,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:08,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:08,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944873781] [2023-08-24 01:15:08,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944873781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:08,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:08,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:08,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325361401] [2023-08-24 01:15:08,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:08,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:15:08,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:08,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:15:08,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:15:08,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 621 [2023-08-24 01:15:08,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:08,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:08,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 621 [2023-08-24 01:15:08,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:08,798 INFO L124 PetriNetUnfolderBase]: 983/1468 cut-off events. [2023-08-24 01:15:08,803 INFO L125 PetriNetUnfolderBase]: For 1498/1498 co-relation queries the response was YES. [2023-08-24 01:15:08,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3602 conditions, 1468 events. 983/1468 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5823 event pairs, 494 based on Foata normal form. 1/1174 useless extension candidates. Maximal degree in co-relation 3591. Up to 1056 conditions per place. [2023-08-24 01:15:08,811 INFO L140 encePairwiseOnDemand]: 617/621 looper letters, 63 selfloop transitions, 4 changer transitions 11/78 dead transitions. [2023-08-24 01:15:08,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 398 flow [2023-08-24 01:15:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:15:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:15:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1375 transitions. [2023-08-24 01:15:08,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428341384863124 [2023-08-24 01:15:08,815 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1375 transitions. [2023-08-24 01:15:08,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1375 transitions. [2023-08-24 01:15:08,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:08,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1375 transitions. [2023-08-24 01:15:08,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:08,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:08,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:08,824 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 123 flow. Second operand 5 states and 1375 transitions. [2023-08-24 01:15:08,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 398 flow [2023-08-24 01:15:08,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 78 transitions, 382 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-24 01:15:08,829 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 148 flow [2023-08-24 01:15:08,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-08-24 01:15:08,831 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2023-08-24 01:15:08,831 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 148 flow [2023-08-24 01:15:08,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:08,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:08,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:08,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 01:15:08,833 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:08,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:08,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1417716322, now seen corresponding path program 5 times [2023-08-24 01:15:08,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:08,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87508351] [2023-08-24 01:15:08,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:08,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:09,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:09,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87508351] [2023-08-24 01:15:09,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87508351] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:09,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:09,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:09,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114294773] [2023-08-24 01:15:09,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:09,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:15:09,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:09,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:15:09,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:15:09,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 621 [2023-08-24 01:15:09,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:09,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:09,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 621 [2023-08-24 01:15:09,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:09,676 INFO L124 PetriNetUnfolderBase]: 977/1448 cut-off events. [2023-08-24 01:15:09,676 INFO L125 PetriNetUnfolderBase]: For 2043/2043 co-relation queries the response was YES. [2023-08-24 01:15:09,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 1448 events. 977/1448 cut-off events. For 2043/2043 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5739 event pairs, 563 based on Foata normal form. 1/1156 useless extension candidates. Maximal degree in co-relation 3666. Up to 1179 conditions per place. [2023-08-24 01:15:09,683 INFO L140 encePairwiseOnDemand]: 617/621 looper letters, 65 selfloop transitions, 4 changer transitions 10/79 dead transitions. [2023-08-24 01:15:09,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 407 flow [2023-08-24 01:15:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:15:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:15:09,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1377 transitions. [2023-08-24 01:15:09,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434782608695652 [2023-08-24 01:15:09,687 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1377 transitions. [2023-08-24 01:15:09,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1377 transitions. [2023-08-24 01:15:09,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:09,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1377 transitions. [2023-08-24 01:15:09,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.4) internal successors, (1377), 5 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:09,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:09,695 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:09,695 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 148 flow. Second operand 5 states and 1377 transitions. [2023-08-24 01:15:09,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 407 flow [2023-08-24 01:15:09,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 79 transitions, 391 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-24 01:15:09,701 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 147 flow [2023-08-24 01:15:09,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-08-24 01:15:09,703 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-08-24 01:15:09,703 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 147 flow [2023-08-24 01:15:09,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:09,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:09,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:09,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 01:15:09,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:09,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:09,705 INFO L85 PathProgramCache]: Analyzing trace with hash -163988992, now seen corresponding path program 6 times [2023-08-24 01:15:09,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:09,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428453121] [2023-08-24 01:15:09,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:09,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:10,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:10,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428453121] [2023-08-24 01:15:10,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428453121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:10,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:10,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:10,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877429590] [2023-08-24 01:15:10,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:10,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 01:15:10,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:10,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 01:15:10,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 01:15:10,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 621 [2023-08-24 01:15:10,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:10,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:10,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 621 [2023-08-24 01:15:10,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:10,524 INFO L124 PetriNetUnfolderBase]: 964/1423 cut-off events. [2023-08-24 01:15:10,524 INFO L125 PetriNetUnfolderBase]: For 1850/1850 co-relation queries the response was YES. [2023-08-24 01:15:10,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 1423 events. 964/1423 cut-off events. For 1850/1850 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5457 event pairs, 494 based on Foata normal form. 1/1133 useless extension candidates. Maximal degree in co-relation 3579. Up to 1056 conditions per place. [2023-08-24 01:15:10,532 INFO L140 encePairwiseOnDemand]: 617/621 looper letters, 70 selfloop transitions, 3 changer transitions 10/83 dead transitions. [2023-08-24 01:15:10,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 83 transitions, 420 flow [2023-08-24 01:15:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:15:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:15:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1381 transitions. [2023-08-24 01:15:10,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44476650563607084 [2023-08-24 01:15:10,537 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1381 transitions. [2023-08-24 01:15:10,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1381 transitions. [2023-08-24 01:15:10,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:10,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1381 transitions. [2023-08-24 01:15:10,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 276.2) internal successors, (1381), 5 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:10,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:10,544 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:10,545 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 147 flow. Second operand 5 states and 1381 transitions. [2023-08-24 01:15:10,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 83 transitions, 420 flow [2023-08-24 01:15:10,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 83 transitions, 409 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-24 01:15:10,549 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 147 flow [2023-08-24 01:15:10,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-08-24 01:15:10,550 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-08-24 01:15:10,550 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 147 flow [2023-08-24 01:15:10,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 264.0) internal successors, (1320), 5 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:10,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:10,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:10,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 01:15:10,552 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:10,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:10,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1328314622, now seen corresponding path program 1 times [2023-08-24 01:15:10,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:10,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033504297] [2023-08-24 01:15:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:10,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:10,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:10,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:10,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033504297] [2023-08-24 01:15:10,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033504297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:10,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:10,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:10,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593168941] [2023-08-24 01:15:10,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:10,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:15:10,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:10,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:15:10,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:15:10,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 621 [2023-08-24 01:15:10,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:10,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:10,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 621 [2023-08-24 01:15:10,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:10,898 INFO L124 PetriNetUnfolderBase]: 1250/1858 cut-off events. [2023-08-24 01:15:10,899 INFO L125 PetriNetUnfolderBase]: For 2976/2976 co-relation queries the response was YES. [2023-08-24 01:15:10,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4558 conditions, 1858 events. 1250/1858 cut-off events. For 2976/2976 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8172 event pairs, 82 based on Foata normal form. 42/1511 useless extension candidates. Maximal degree in co-relation 4546. Up to 1135 conditions per place. [2023-08-24 01:15:10,910 INFO L140 encePairwiseOnDemand]: 617/621 looper letters, 70 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-24 01:15:10,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 413 flow [2023-08-24 01:15:10,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:15:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:15:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1141 transitions. [2023-08-24 01:15:10,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933977455716585 [2023-08-24 01:15:10,913 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1141 transitions. [2023-08-24 01:15:10,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1141 transitions. [2023-08-24 01:15:10,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:10,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1141 transitions. [2023-08-24 01:15:10,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:10,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:10,920 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:10,920 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 147 flow. Second operand 4 states and 1141 transitions. [2023-08-24 01:15:10,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 413 flow [2023-08-24 01:15:10,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 404 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-24 01:15:10,924 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 199 flow [2023-08-24 01:15:10,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-08-24 01:15:10,926 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2023-08-24 01:15:10,926 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 199 flow [2023-08-24 01:15:10,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:10,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:10,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:10,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 01:15:10,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:10,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:10,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1213466414, now seen corresponding path program 2 times [2023-08-24 01:15:10,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:10,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811079972] [2023-08-24 01:15:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:10,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:11,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:11,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811079972] [2023-08-24 01:15:11,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811079972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:11,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:11,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:11,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187922543] [2023-08-24 01:15:11,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:11,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:15:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:11,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:15:11,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:15:11,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 621 [2023-08-24 01:15:11,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:11,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:11,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 621 [2023-08-24 01:15:11,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:11,240 INFO L124 PetriNetUnfolderBase]: 1145/1709 cut-off events. [2023-08-24 01:15:11,240 INFO L125 PetriNetUnfolderBase]: For 2543/2543 co-relation queries the response was YES. [2023-08-24 01:15:11,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4447 conditions, 1709 events. 1145/1709 cut-off events. For 2543/2543 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7392 event pairs, 59 based on Foata normal form. 42/1388 useless extension candidates. Maximal degree in co-relation 4435. Up to 1028 conditions per place. [2023-08-24 01:15:11,250 INFO L140 encePairwiseOnDemand]: 617/621 looper letters, 72 selfloop transitions, 8 changer transitions 0/80 dead transitions. [2023-08-24 01:15:11,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 496 flow [2023-08-24 01:15:11,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:15:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:15:11,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1139 transitions. [2023-08-24 01:15:11,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585346215780998 [2023-08-24 01:15:11,253 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1139 transitions. [2023-08-24 01:15:11,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1139 transitions. [2023-08-24 01:15:11,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:11,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1139 transitions. [2023-08-24 01:15:11,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:11,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:11,260 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:11,260 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 199 flow. Second operand 4 states and 1139 transitions. [2023-08-24 01:15:11,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 496 flow [2023-08-24 01:15:11,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 80 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 01:15:11,264 INFO L231 Difference]: Finished difference. Result has 59 places, 49 transitions, 284 flow [2023-08-24 01:15:11,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=59, PETRI_TRANSITIONS=49} [2023-08-24 01:15:11,265 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-08-24 01:15:11,265 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 49 transitions, 284 flow [2023-08-24 01:15:11,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:11,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:11,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:11,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 01:15:11,266 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:11,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash -974397032, now seen corresponding path program 3 times [2023-08-24 01:15:11,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:11,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684326636] [2023-08-24 01:15:11,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:11,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:11,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:11,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684326636] [2023-08-24 01:15:11,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684326636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:11,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:11,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:11,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282483727] [2023-08-24 01:15:11,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:11,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:15:11,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:11,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:15:11,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:15:11,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 621 [2023-08-24 01:15:11,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:11,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:11,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 621 [2023-08-24 01:15:11,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:11,635 INFO L124 PetriNetUnfolderBase]: 1074/1594 cut-off events. [2023-08-24 01:15:11,635 INFO L125 PetriNetUnfolderBase]: For 3200/3200 co-relation queries the response was YES. [2023-08-24 01:15:11,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 1594 events. 1074/1594 cut-off events. For 3200/3200 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6673 event pairs, 267 based on Foata normal form. 8/1265 useless extension candidates. Maximal degree in co-relation 4551. Up to 1264 conditions per place. [2023-08-24 01:15:11,644 INFO L140 encePairwiseOnDemand]: 616/621 looper letters, 68 selfloop transitions, 11 changer transitions 1/80 dead transitions. [2023-08-24 01:15:11,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 537 flow [2023-08-24 01:15:11,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:15:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:15:11,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1408 transitions. [2023-08-24 01:15:11,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534621578099839 [2023-08-24 01:15:11,649 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1408 transitions. [2023-08-24 01:15:11,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1408 transitions. [2023-08-24 01:15:11,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:11,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1408 transitions. [2023-08-24 01:15:11,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.6) internal successors, (1408), 5 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:11,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:11,658 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:11,659 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 284 flow. Second operand 5 states and 1408 transitions. [2023-08-24 01:15:11,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 537 flow [2023-08-24 01:15:11,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 535 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-24 01:15:11,665 INFO L231 Difference]: Finished difference. Result has 64 places, 50 transitions, 315 flow [2023-08-24 01:15:11,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2023-08-24 01:15:11,667 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-08-24 01:15:11,667 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 315 flow [2023-08-24 01:15:11,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:11,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:11,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:11,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 01:15:11,668 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:11,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash 808757189, now seen corresponding path program 1 times [2023-08-24 01:15:11,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:11,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445248812] [2023-08-24 01:15:11,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:11,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:11,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:11,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:11,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445248812] [2023-08-24 01:15:11,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445248812] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:11,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:11,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:11,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097187816] [2023-08-24 01:15:11,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:11,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:15:11,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:11,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:15:11,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:15:11,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 621 [2023-08-24 01:15:11,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 315 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:11,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:11,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 621 [2023-08-24 01:15:11,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:12,002 INFO L124 PetriNetUnfolderBase]: 1153/1725 cut-off events. [2023-08-24 01:15:12,002 INFO L125 PetriNetUnfolderBase]: For 4106/4106 co-relation queries the response was YES. [2023-08-24 01:15:12,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4902 conditions, 1725 events. 1153/1725 cut-off events. For 4106/4106 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 7447 event pairs, 202 based on Foata normal form. 16/1366 useless extension candidates. Maximal degree in co-relation 4885. Up to 1402 conditions per place. [2023-08-24 01:15:12,014 INFO L140 encePairwiseOnDemand]: 617/621 looper letters, 65 selfloop transitions, 10 changer transitions 0/75 dead transitions. [2023-08-24 01:15:12,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 547 flow [2023-08-24 01:15:12,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:15:12,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:15:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1132 transitions. [2023-08-24 01:15:12,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4557165861513688 [2023-08-24 01:15:12,018 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1132 transitions. [2023-08-24 01:15:12,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1132 transitions. [2023-08-24 01:15:12,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:12,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1132 transitions. [2023-08-24 01:15:12,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 283.0) internal successors, (1132), 4 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,024 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,024 INFO L175 Difference]: Start difference. First operand has 64 places, 50 transitions, 315 flow. Second operand 4 states and 1132 transitions. [2023-08-24 01:15:12,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 547 flow [2023-08-24 01:15:12,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 512 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-24 01:15:12,033 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 342 flow [2023-08-24 01:15:12,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=342, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-08-24 01:15:12,034 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-08-24 01:15:12,034 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 342 flow [2023-08-24 01:15:12,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:12,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:12,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 01:15:12,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:12,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:12,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1630457635, now seen corresponding path program 2 times [2023-08-24 01:15:12,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:12,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907895807] [2023-08-24 01:15:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:12,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:12,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907895807] [2023-08-24 01:15:12,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907895807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:12,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:12,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:12,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040496298] [2023-08-24 01:15:12,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:12,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:15:12,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:15:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:15:12,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 621 [2023-08-24 01:15:12,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:12,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 621 [2023-08-24 01:15:12,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:12,370 INFO L124 PetriNetUnfolderBase]: 1117/1667 cut-off events. [2023-08-24 01:15:12,370 INFO L125 PetriNetUnfolderBase]: For 2942/2942 co-relation queries the response was YES. [2023-08-24 01:15:12,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4870 conditions, 1667 events. 1117/1667 cut-off events. For 2942/2942 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7061 event pairs, 315 based on Foata normal form. 10/1316 useless extension candidates. Maximal degree in co-relation 4855. Up to 1247 conditions per place. [2023-08-24 01:15:12,382 INFO L140 encePairwiseOnDemand]: 616/621 looper letters, 71 selfloop transitions, 11 changer transitions 2/84 dead transitions. [2023-08-24 01:15:12,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 84 transitions, 606 flow [2023-08-24 01:15:12,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:15:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:15:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1408 transitions. [2023-08-24 01:15:12,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534621578099839 [2023-08-24 01:15:12,386 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1408 transitions. [2023-08-24 01:15:12,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1408 transitions. [2023-08-24 01:15:12,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:12,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1408 transitions. [2023-08-24 01:15:12,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 281.6) internal successors, (1408), 5 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,394 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,394 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 342 flow. Second operand 5 states and 1408 transitions. [2023-08-24 01:15:12,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 84 transitions, 606 flow [2023-08-24 01:15:12,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 84 transitions, 588 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-24 01:15:12,400 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 375 flow [2023-08-24 01:15:12,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2023-08-24 01:15:12,401 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2023-08-24 01:15:12,401 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 375 flow [2023-08-24 01:15:12,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:12,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:12,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 01:15:12,402 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:12,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:12,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1636192237, now seen corresponding path program 3 times [2023-08-24 01:15:12,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:12,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910848176] [2023-08-24 01:15:12,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:12,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:12,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:12,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910848176] [2023-08-24 01:15:12,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910848176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:12,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:12,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:12,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045290398] [2023-08-24 01:15:12,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:12,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:15:12,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:12,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:15:12,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:15:12,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 621 [2023-08-24 01:15:12,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:12,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 621 [2023-08-24 01:15:12,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:12,769 INFO L124 PetriNetUnfolderBase]: 1010/1494 cut-off events. [2023-08-24 01:15:12,770 INFO L125 PetriNetUnfolderBase]: For 3469/3469 co-relation queries the response was YES. [2023-08-24 01:15:12,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4415 conditions, 1494 events. 1010/1494 cut-off events. For 3469/3469 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5934 event pairs, 444 based on Foata normal form. 18/1191 useless extension candidates. Maximal degree in co-relation 4399. Up to 1130 conditions per place. [2023-08-24 01:15:12,777 INFO L140 encePairwiseOnDemand]: 616/621 looper letters, 85 selfloop transitions, 7 changer transitions 4/96 dead transitions. [2023-08-24 01:15:12,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 96 transitions, 657 flow [2023-08-24 01:15:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:15:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:15:12,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1417 transitions. [2023-08-24 01:15:12,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563607085346216 [2023-08-24 01:15:12,781 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1417 transitions. [2023-08-24 01:15:12,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1417 transitions. [2023-08-24 01:15:12,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:12,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1417 transitions. [2023-08-24 01:15:12,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 283.4) internal successors, (1417), 5 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,788 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 621.0) internal successors, (3726), 6 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,788 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 375 flow. Second operand 5 states and 1417 transitions. [2023-08-24 01:15:12,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 96 transitions, 657 flow [2023-08-24 01:15:12,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 96 transitions, 643 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-24 01:15:12,796 INFO L231 Difference]: Finished difference. Result has 72 places, 53 transitions, 344 flow [2023-08-24 01:15:12,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=344, PETRI_PLACES=72, PETRI_TRANSITIONS=53} [2023-08-24 01:15:12,797 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2023-08-24 01:15:12,797 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 53 transitions, 344 flow [2023-08-24 01:15:12,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:12,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:12,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 01:15:12,798 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:12,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:12,798 INFO L85 PathProgramCache]: Analyzing trace with hash 742520925, now seen corresponding path program 4 times [2023-08-24 01:15:12,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:12,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57244273] [2023-08-24 01:15:12,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:12,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:12,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:12,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57244273] [2023-08-24 01:15:12,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57244273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:12,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:12,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:12,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103673330] [2023-08-24 01:15:12,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:12,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:15:12,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:12,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:15:12,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:15:12,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 621 [2023-08-24 01:15:12,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 53 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:12,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:12,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 621 [2023-08-24 01:15:12,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:13,086 INFO L124 PetriNetUnfolderBase]: 950/1388 cut-off events. [2023-08-24 01:15:13,086 INFO L125 PetriNetUnfolderBase]: For 3360/3360 co-relation queries the response was YES. [2023-08-24 01:15:13,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4061 conditions, 1388 events. 950/1388 cut-off events. For 3360/3360 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5315 event pairs, 218 based on Foata normal form. 16/1103 useless extension candidates. Maximal degree in co-relation 4044. Up to 1219 conditions per place. [2023-08-24 01:15:13,094 INFO L140 encePairwiseOnDemand]: 617/621 looper letters, 58 selfloop transitions, 10 changer transitions 3/71 dead transitions. [2023-08-24 01:15:13,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 526 flow [2023-08-24 01:15:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:15:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:15:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1129 transitions. [2023-08-24 01:15:13,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45450885668276975 [2023-08-24 01:15:13,097 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1129 transitions. [2023-08-24 01:15:13,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1129 transitions. [2023-08-24 01:15:13,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:13,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1129 transitions. [2023-08-24 01:15:13,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 282.25) internal successors, (1129), 4 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,103 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,103 INFO L175 Difference]: Start difference. First operand has 72 places, 53 transitions, 344 flow. Second operand 4 states and 1129 transitions. [2023-08-24 01:15:13,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 526 flow [2023-08-24 01:15:13,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 500 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-24 01:15:13,115 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 322 flow [2023-08-24 01:15:13,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-08-24 01:15:13,116 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2023-08-24 01:15:13,117 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 322 flow [2023-08-24 01:15:13,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:13,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:13,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 01:15:13,117 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:13,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:13,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2084484989, now seen corresponding path program 5 times [2023-08-24 01:15:13,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:13,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980758718] [2023-08-24 01:15:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:13,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:13,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:13,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980758718] [2023-08-24 01:15:13,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980758718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:13,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:13,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:13,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241661912] [2023-08-24 01:15:13,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:13,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:15:13,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:13,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:15:13,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:15:13,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 621 [2023-08-24 01:15:13,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 322 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:13,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 621 [2023-08-24 01:15:13,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:13,392 INFO L124 PetriNetUnfolderBase]: 929/1355 cut-off events. [2023-08-24 01:15:13,392 INFO L125 PetriNetUnfolderBase]: For 2197/2197 co-relation queries the response was YES. [2023-08-24 01:15:13,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3876 conditions, 1355 events. 929/1355 cut-off events. For 2197/2197 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5071 event pairs, 505 based on Foata normal form. 4/1060 useless extension candidates. Maximal degree in co-relation 3861. Up to 1279 conditions per place. [2023-08-24 01:15:13,399 INFO L140 encePairwiseOnDemand]: 618/621 looper letters, 61 selfloop transitions, 1 changer transitions 7/69 dead transitions. [2023-08-24 01:15:13,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 498 flow [2023-08-24 01:15:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:15:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:15:13,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1123 transitions. [2023-08-24 01:15:13,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45209339774557167 [2023-08-24 01:15:13,402 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1123 transitions. [2023-08-24 01:15:13,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1123 transitions. [2023-08-24 01:15:13,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:13,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1123 transitions. [2023-08-24 01:15:13,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 280.75) internal successors, (1123), 4 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,408 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,408 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 322 flow. Second operand 4 states and 1123 transitions. [2023-08-24 01:15:13,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 498 flow [2023-08-24 01:15:13,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 470 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-24 01:15:13,413 INFO L231 Difference]: Finished difference. Result has 70 places, 50 transitions, 280 flow [2023-08-24 01:15:13,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=70, PETRI_TRANSITIONS=50} [2023-08-24 01:15:13,414 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2023-08-24 01:15:13,414 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 50 transitions, 280 flow [2023-08-24 01:15:13,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:13,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:13,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 01:15:13,415 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:13,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:13,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1168274050, now seen corresponding path program 4 times [2023-08-24 01:15:13,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:13,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750671984] [2023-08-24 01:15:13,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:13,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:13,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:13,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750671984] [2023-08-24 01:15:13,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750671984] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:13,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:13,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:13,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662955429] [2023-08-24 01:15:13,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:13,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:15:13,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:13,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:15:13,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:15:13,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 621 [2023-08-24 01:15:13,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 50 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:13,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 621 [2023-08-24 01:15:13,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:13,691 INFO L124 PetriNetUnfolderBase]: 899/1305 cut-off events. [2023-08-24 01:15:13,691 INFO L125 PetriNetUnfolderBase]: For 1705/1705 co-relation queries the response was YES. [2023-08-24 01:15:13,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 1305 events. 899/1305 cut-off events. For 1705/1705 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4956 event pairs, 196 based on Foata normal form. 14/1032 useless extension candidates. Maximal degree in co-relation 3632. Up to 1211 conditions per place. [2023-08-24 01:15:13,736 INFO L140 encePairwiseOnDemand]: 616/621 looper letters, 50 selfloop transitions, 5 changer transitions 11/66 dead transitions. [2023-08-24 01:15:13,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 430 flow [2023-08-24 01:15:13,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:15:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:15:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1125 transitions. [2023-08-24 01:15:13,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528985507246377 [2023-08-24 01:15:13,740 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1125 transitions. [2023-08-24 01:15:13,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1125 transitions. [2023-08-24 01:15:13,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:13,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1125 transitions. [2023-08-24 01:15:13,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 281.25) internal successors, (1125), 4 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,747 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,747 INFO L175 Difference]: Start difference. First operand has 70 places, 50 transitions, 280 flow. Second operand 4 states and 1125 transitions. [2023-08-24 01:15:13,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 430 flow [2023-08-24 01:15:13,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 01:15:13,750 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 252 flow [2023-08-24 01:15:13,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2023-08-24 01:15:13,751 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2023-08-24 01:15:13,751 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 252 flow [2023-08-24 01:15:13,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:13,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:13,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 01:15:13,752 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:13,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:13,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1945099452, now seen corresponding path program 5 times [2023-08-24 01:15:13,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:13,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62347409] [2023-08-24 01:15:13,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:13,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:13,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62347409] [2023-08-24 01:15:13,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62347409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:13,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:13,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:15:13,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608086957] [2023-08-24 01:15:13,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:13,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:15:13,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:13,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:15:13,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:15:13,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 621 [2023-08-24 01:15:13,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 252 flow. Second operand has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:13,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 621 [2023-08-24 01:15:13,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:13,985 INFO L124 PetriNetUnfolderBase]: 803/1151 cut-off events. [2023-08-24 01:15:13,985 INFO L125 PetriNetUnfolderBase]: For 1615/1615 co-relation queries the response was YES. [2023-08-24 01:15:13,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3219 conditions, 1151 events. 803/1151 cut-off events. For 1615/1615 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4007 event pairs, 444 based on Foata normal form. 10/906 useless extension candidates. Maximal degree in co-relation 3204. Up to 1130 conditions per place. [2023-08-24 01:15:13,990 INFO L140 encePairwiseOnDemand]: 618/621 looper letters, 44 selfloop transitions, 0 changer transitions 10/54 dead transitions. [2023-08-24 01:15:13,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 54 transitions, 357 flow [2023-08-24 01:15:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:15:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:15:13,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1112 transitions. [2023-08-24 01:15:13,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4476650563607085 [2023-08-24 01:15:13,993 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1112 transitions. [2023-08-24 01:15:13,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1112 transitions. [2023-08-24 01:15:13,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:13,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1112 transitions. [2023-08-24 01:15:13,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:13,999 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 621.0) internal successors, (3105), 5 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:14,000 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 252 flow. Second operand 4 states and 1112 transitions. [2023-08-24 01:15:14,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 54 transitions, 357 flow [2023-08-24 01:15:14,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 341 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-24 01:15:14,002 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 199 flow [2023-08-24 01:15:14,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2023-08-24 01:15:14,003 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2023-08-24 01:15:14,003 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 199 flow [2023-08-24 01:15:14,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:14,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:14,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:14,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 01:15:14,003 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:14,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:14,006 INFO L85 PathProgramCache]: Analyzing trace with hash -520072893, now seen corresponding path program 1 times [2023-08-24 01:15:14,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:14,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678936357] [2023-08-24 01:15:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:14,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:14,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:14,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678936357] [2023-08-24 01:15:14,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678936357] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:14,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:14,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 01:15:14,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965764701] [2023-08-24 01:15:14,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:14,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 01:15:14,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:14,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 01:15:14,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-24 01:15:14,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 621 [2023-08-24 01:15:14,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 199 flow. Second operand has 9 states, 9 states have (on average 211.44444444444446) internal successors, (1903), 9 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:14,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:14,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 621 [2023-08-24 01:15:14,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:15,169 INFO L124 PetriNetUnfolderBase]: 1517/2190 cut-off events. [2023-08-24 01:15:15,169 INFO L125 PetriNetUnfolderBase]: For 1611/1611 co-relation queries the response was YES. [2023-08-24 01:15:15,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6147 conditions, 2190 events. 1517/2190 cut-off events. For 1611/1611 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8888 event pairs, 597 based on Foata normal form. 1/1757 useless extension candidates. Maximal degree in co-relation 6136. Up to 731 conditions per place. [2023-08-24 01:15:15,179 INFO L140 encePairwiseOnDemand]: 608/621 looper letters, 105 selfloop transitions, 21 changer transitions 7/133 dead transitions. [2023-08-24 01:15:15,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 133 transitions, 844 flow [2023-08-24 01:15:15,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 01:15:15,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 01:15:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1776 transitions. [2023-08-24 01:15:15,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.357487922705314 [2023-08-24 01:15:15,185 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1776 transitions. [2023-08-24 01:15:15,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1776 transitions. [2023-08-24 01:15:15,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:15,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1776 transitions. [2023-08-24 01:15:15,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:15,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 621.0) internal successors, (5589), 9 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:15,196 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 621.0) internal successors, (5589), 9 states have internal predecessors, (5589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:15,196 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 199 flow. Second operand 8 states and 1776 transitions. [2023-08-24 01:15:15,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 133 transitions, 844 flow [2023-08-24 01:15:15,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 133 transitions, 838 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-24 01:15:15,200 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 378 flow [2023-08-24 01:15:15,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=378, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2023-08-24 01:15:15,200 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 28 predicate places. [2023-08-24 01:15:15,200 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 378 flow [2023-08-24 01:15:15,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 211.44444444444446) internal successors, (1903), 9 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:15,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:15,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:15,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 01:15:15,202 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:15,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:15,202 INFO L85 PathProgramCache]: Analyzing trace with hash -184582140, now seen corresponding path program 1 times [2023-08-24 01:15:15,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:15,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249115849] [2023-08-24 01:15:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:15,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:15,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:15,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:15,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249115849] [2023-08-24 01:15:15,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249115849] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:15,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744241344] [2023-08-24 01:15:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:15,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:15,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:15,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:15:15,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 01:15:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:15,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-24 01:15:15,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:16,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:15:16,720 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:15:16,721 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:15:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:18,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744241344] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:18,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:15:18,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 24 [2023-08-24 01:15:18,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613050895] [2023-08-24 01:15:18,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:18,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:15:18,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:15:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2023-08-24 01:15:18,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 621 [2023-08-24 01:15:18,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 207.3) internal successors, (2073), 10 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:18,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:18,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 621 [2023-08-24 01:15:18,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:20,802 INFO L124 PetriNetUnfolderBase]: 2609/3817 cut-off events. [2023-08-24 01:15:20,802 INFO L125 PetriNetUnfolderBase]: For 4290/4290 co-relation queries the response was YES. [2023-08-24 01:15:20,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12240 conditions, 3817 events. 2609/3817 cut-off events. For 4290/4290 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 17817 event pairs, 604 based on Foata normal form. 65/3452 useless extension candidates. Maximal degree in co-relation 12224. Up to 696 conditions per place. [2023-08-24 01:15:20,823 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 219 selfloop transitions, 35 changer transitions 20/274 dead transitions. [2023-08-24 01:15:20,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 274 transitions, 1888 flow [2023-08-24 01:15:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 01:15:20,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 01:15:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3088 transitions. [2023-08-24 01:15:20,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3551874856222682 [2023-08-24 01:15:20,833 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3088 transitions. [2023-08-24 01:15:20,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3088 transitions. [2023-08-24 01:15:20,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:20,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3088 transitions. [2023-08-24 01:15:20,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 220.57142857142858) internal successors, (3088), 14 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:20,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:20,849 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:20,849 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 378 flow. Second operand 14 states and 3088 transitions. [2023-08-24 01:15:20,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 274 transitions, 1888 flow [2023-08-24 01:15:20,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 274 transitions, 1884 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-24 01:15:20,858 INFO L231 Difference]: Finished difference. Result has 87 places, 87 transitions, 706 flow [2023-08-24 01:15:20,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=706, PETRI_PLACES=87, PETRI_TRANSITIONS=87} [2023-08-24 01:15:20,859 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 49 predicate places. [2023-08-24 01:15:20,859 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 87 transitions, 706 flow [2023-08-24 01:15:20,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 207.3) internal successors, (2073), 10 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:20,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:20,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:20,872 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 01:15:21,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:21,066 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:21,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1315125648, now seen corresponding path program 1 times [2023-08-24 01:15:21,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:21,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197843807] [2023-08-24 01:15:21,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:21,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:21,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:21,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197843807] [2023-08-24 01:15:21,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197843807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:21,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916373490] [2023-08-24 01:15:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:21,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:21,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:21,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:15:21,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 01:15:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:21,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-24 01:15:21,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:21,889 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:15:21,890 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 93 [2023-08-24 01:15:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:21,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:15:22,236 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:15:22,236 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:15:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:15:24,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916373490] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:24,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:15:24,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-08-24 01:15:24,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296532730] [2023-08-24 01:15:24,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:24,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:15:24,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:24,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:15:24,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2023-08-24 01:15:24,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:15:24,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 87 transitions, 706 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:24,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:24,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:15:24,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:26,577 INFO L124 PetriNetUnfolderBase]: 3859/5661 cut-off events. [2023-08-24 01:15:26,577 INFO L125 PetriNetUnfolderBase]: For 14539/14539 co-relation queries the response was YES. [2023-08-24 01:15:26,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21403 conditions, 5661 events. 3859/5661 cut-off events. For 14539/14539 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 28667 event pairs, 490 based on Foata normal form. 1/5056 useless extension candidates. Maximal degree in co-relation 21378. Up to 1394 conditions per place. [2023-08-24 01:15:26,610 INFO L140 encePairwiseOnDemand]: 605/621 looper letters, 255 selfloop transitions, 78 changer transitions 15/348 dead transitions. [2023-08-24 01:15:26,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 348 transitions, 3039 flow [2023-08-24 01:15:26,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 01:15:26,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 01:15:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2970 transitions. [2023-08-24 01:15:26,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416149068322981 [2023-08-24 01:15:26,616 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2970 transitions. [2023-08-24 01:15:26,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2970 transitions. [2023-08-24 01:15:26,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:26,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2970 transitions. [2023-08-24 01:15:26,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.14285714285714) internal successors, (2970), 14 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:26,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:26,630 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:26,630 INFO L175 Difference]: Start difference. First operand has 87 places, 87 transitions, 706 flow. Second operand 14 states and 2970 transitions. [2023-08-24 01:15:26,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 348 transitions, 3039 flow [2023-08-24 01:15:26,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 348 transitions, 2937 flow, removed 37 selfloop flow, removed 3 redundant places. [2023-08-24 01:15:26,739 INFO L231 Difference]: Finished difference. Result has 107 places, 165 transitions, 1703 flow [2023-08-24 01:15:26,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1703, PETRI_PLACES=107, PETRI_TRANSITIONS=165} [2023-08-24 01:15:26,739 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 69 predicate places. [2023-08-24 01:15:26,739 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 165 transitions, 1703 flow [2023-08-24 01:15:26,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:26,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:26,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:26,751 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 01:15:26,946 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,SelfDestructingSolverStorable19 [2023-08-24 01:15:26,946 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:26,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:26,947 INFO L85 PathProgramCache]: Analyzing trace with hash -265939184, now seen corresponding path program 2 times [2023-08-24 01:15:26,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:26,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151492280] [2023-08-24 01:15:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:26,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:27,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:27,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151492280] [2023-08-24 01:15:27,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151492280] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:27,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531094960] [2023-08-24 01:15:27,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:15:27,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:27,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:27,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:15:27,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 01:15:27,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 01:15:27,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:15:27,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-24 01:15:27,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:15:27,917 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:15:27,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531094960] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:27,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:15:27,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-08-24 01:15:27,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516761744] [2023-08-24 01:15:27,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:27,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 01:15:27,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:27,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 01:15:27,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-08-24 01:15:27,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 621 [2023-08-24 01:15:27,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 165 transitions, 1703 flow. Second operand has 9 states, 9 states have (on average 207.55555555555554) internal successors, (1868), 9 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:27,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:27,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 621 [2023-08-24 01:15:27,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:28,624 INFO L124 PetriNetUnfolderBase]: 3842/5651 cut-off events. [2023-08-24 01:15:28,624 INFO L125 PetriNetUnfolderBase]: For 23196/23196 co-relation queries the response was YES. [2023-08-24 01:15:28,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24418 conditions, 5651 events. 3842/5651 cut-off events. For 23196/23196 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 28430 event pairs, 892 based on Foata normal form. 2/5369 useless extension candidates. Maximal degree in co-relation 24383. Up to 2166 conditions per place. [2023-08-24 01:15:28,668 INFO L140 encePairwiseOnDemand]: 610/621 looper letters, 158 selfloop transitions, 80 changer transitions 24/262 dead transitions. [2023-08-24 01:15:28,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 262 transitions, 2904 flow [2023-08-24 01:15:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:15:28,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:15:28,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1965 transitions. [2023-08-24 01:15:28,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515834675254965 [2023-08-24 01:15:28,672 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1965 transitions. [2023-08-24 01:15:28,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1965 transitions. [2023-08-24 01:15:28,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:28,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1965 transitions. [2023-08-24 01:15:28,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.33333333333334) internal successors, (1965), 9 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:28,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 621.0) internal successors, (6210), 10 states have internal predecessors, (6210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:28,680 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 621.0) internal successors, (6210), 10 states have internal predecessors, (6210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:28,680 INFO L175 Difference]: Start difference. First operand has 107 places, 165 transitions, 1703 flow. Second operand 9 states and 1965 transitions. [2023-08-24 01:15:28,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 262 transitions, 2904 flow [2023-08-24 01:15:28,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 262 transitions, 2862 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-08-24 01:15:28,811 INFO L231 Difference]: Finished difference. Result has 116 places, 171 transitions, 1994 flow [2023-08-24 01:15:28,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1994, PETRI_PLACES=116, PETRI_TRANSITIONS=171} [2023-08-24 01:15:28,812 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 78 predicate places. [2023-08-24 01:15:28,812 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 171 transitions, 1994 flow [2023-08-24 01:15:28,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 207.55555555555554) internal successors, (1868), 9 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:28,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:28,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:28,821 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 01:15:29,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:29,019 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:29,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash -2105478674, now seen corresponding path program 3 times [2023-08-24 01:15:29,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:29,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003172187] [2023-08-24 01:15:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:29,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:29,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003172187] [2023-08-24 01:15:29,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003172187] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:29,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101530065] [2023-08-24 01:15:29,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:15:29,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:29,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:29,511 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:15:29,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 01:15:29,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 01:15:29,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:15:29,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-24 01:15:29,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:15:30,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:15:30,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101530065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:30,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:15:30,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2023-08-24 01:15:30,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420231827] [2023-08-24 01:15:30,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:30,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 01:15:30,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:30,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 01:15:30,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-08-24 01:15:30,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 621 [2023-08-24 01:15:30,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 171 transitions, 1994 flow. Second operand has 9 states, 9 states have (on average 207.55555555555554) internal successors, (1868), 9 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:30,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:30,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 621 [2023-08-24 01:15:30,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:30,764 INFO L124 PetriNetUnfolderBase]: 4094/6057 cut-off events. [2023-08-24 01:15:30,764 INFO L125 PetriNetUnfolderBase]: For 26019/26019 co-relation queries the response was YES. [2023-08-24 01:15:30,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26774 conditions, 6057 events. 4094/6057 cut-off events. For 26019/26019 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 31358 event pairs, 792 based on Foata normal form. 2/5737 useless extension candidates. Maximal degree in co-relation 26736. Up to 2287 conditions per place. [2023-08-24 01:15:30,803 INFO L140 encePairwiseOnDemand]: 610/621 looper letters, 163 selfloop transitions, 97 changer transitions 7/267 dead transitions. [2023-08-24 01:15:30,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 267 transitions, 3150 flow [2023-08-24 01:15:30,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:15:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:15:30,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1967 transitions. [2023-08-24 01:15:30,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519413132939703 [2023-08-24 01:15:30,808 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1967 transitions. [2023-08-24 01:15:30,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1967 transitions. [2023-08-24 01:15:30,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:30,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1967 transitions. [2023-08-24 01:15:30,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 218.55555555555554) internal successors, (1967), 9 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:30,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 621.0) internal successors, (6210), 10 states have internal predecessors, (6210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:30,878 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 621.0) internal successors, (6210), 10 states have internal predecessors, (6210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:30,878 INFO L175 Difference]: Start difference. First operand has 116 places, 171 transitions, 1994 flow. Second operand 9 states and 1967 transitions. [2023-08-24 01:15:30,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 267 transitions, 3150 flow [2023-08-24 01:15:30,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 267 transitions, 2977 flow, removed 30 selfloop flow, removed 6 redundant places. [2023-08-24 01:15:30,999 INFO L231 Difference]: Finished difference. Result has 118 places, 181 transitions, 2202 flow [2023-08-24 01:15:30,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2202, PETRI_PLACES=118, PETRI_TRANSITIONS=181} [2023-08-24 01:15:31,000 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 80 predicate places. [2023-08-24 01:15:31,000 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 181 transitions, 2202 flow [2023-08-24 01:15:31,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 207.55555555555554) internal successors, (1868), 9 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:31,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:31,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:31,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 01:15:31,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:31,208 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:31,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:31,209 INFO L85 PathProgramCache]: Analyzing trace with hash -892070302, now seen corresponding path program 4 times [2023-08-24 01:15:31,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:31,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268045803] [2023-08-24 01:15:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:31,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:31,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:31,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268045803] [2023-08-24 01:15:31,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268045803] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:31,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614567703] [2023-08-24 01:15:31,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:15:31,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:31,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:31,807 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:15:31,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 01:15:31,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:15:31,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:15:31,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-24 01:15:31,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:32,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:32,283 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:15:32,470 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:15:32,470 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:15:33,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:33,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614567703] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:33,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:15:33,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 23 [2023-08-24 01:15:33,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097355955] [2023-08-24 01:15:33,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:33,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:15:33,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:33,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:15:33,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2023-08-24 01:15:33,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 621 [2023-08-24 01:15:33,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 181 transitions, 2202 flow. Second operand has 10 states, 10 states have (on average 207.3) internal successors, (2073), 10 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:33,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:33,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 621 [2023-08-24 01:15:33,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:35,469 INFO L124 PetriNetUnfolderBase]: 3959/5902 cut-off events. [2023-08-24 01:15:35,469 INFO L125 PetriNetUnfolderBase]: For 28240/28240 co-relation queries the response was YES. [2023-08-24 01:15:35,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25893 conditions, 5902 events. 3959/5902 cut-off events. For 28240/28240 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 30803 event pairs, 1168 based on Foata normal form. 106/5686 useless extension candidates. Maximal degree in co-relation 25855. Up to 1580 conditions per place. [2023-08-24 01:15:35,501 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 243 selfloop transitions, 87 changer transitions 23/353 dead transitions. [2023-08-24 01:15:35,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 353 transitions, 3967 flow [2023-08-24 01:15:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 01:15:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 01:15:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2865 transitions. [2023-08-24 01:15:35,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548866592344853 [2023-08-24 01:15:35,506 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2865 transitions. [2023-08-24 01:15:35,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2865 transitions. [2023-08-24 01:15:35,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:35,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2865 transitions. [2023-08-24 01:15:35,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 220.3846153846154) internal successors, (2865), 13 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:35,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 621.0) internal successors, (8694), 14 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:35,515 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 621.0) internal successors, (8694), 14 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:35,515 INFO L175 Difference]: Start difference. First operand has 118 places, 181 transitions, 2202 flow. Second operand 13 states and 2865 transitions. [2023-08-24 01:15:35,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 353 transitions, 3967 flow [2023-08-24 01:15:35,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 353 transitions, 3743 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-08-24 01:15:35,640 INFO L231 Difference]: Finished difference. Result has 129 places, 187 transitions, 2347 flow [2023-08-24 01:15:35,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2347, PETRI_PLACES=129, PETRI_TRANSITIONS=187} [2023-08-24 01:15:35,640 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 91 predicate places. [2023-08-24 01:15:35,640 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 187 transitions, 2347 flow [2023-08-24 01:15:35,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 207.3) internal successors, (2073), 10 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:35,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:35,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:35,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 01:15:35,847 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,SelfDestructingSolverStorable22 [2023-08-24 01:15:35,847 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:35,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:35,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1267521212, now seen corresponding path program 1 times [2023-08-24 01:15:35,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:35,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784602993] [2023-08-24 01:15:35,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:35,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:36,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:36,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:36,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784602993] [2023-08-24 01:15:36,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784602993] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:36,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306906592] [2023-08-24 01:15:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:36,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:36,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:36,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:15:36,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 01:15:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:36,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-24 01:15:36,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:36,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:15:36,750 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:15:36,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:15:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:15:37,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306906592] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:37,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:15:37,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-08-24 01:15:37,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862503523] [2023-08-24 01:15:37,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:37,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:15:37,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:37,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:15:37,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2023-08-24 01:15:37,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:15:37,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 187 transitions, 2347 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:37,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:37,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:15:37,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:39,265 INFO L124 PetriNetUnfolderBase]: 5938/8756 cut-off events. [2023-08-24 01:15:39,265 INFO L125 PetriNetUnfolderBase]: For 50060/50060 co-relation queries the response was YES. [2023-08-24 01:15:39,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39464 conditions, 8756 events. 5938/8756 cut-off events. For 50060/50060 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 48635 event pairs, 865 based on Foata normal form. 1/8257 useless extension candidates. Maximal degree in co-relation 39421. Up to 1994 conditions per place. [2023-08-24 01:15:39,316 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 310 selfloop transitions, 141 changer transitions 15/466 dead transitions. [2023-08-24 01:15:39,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 466 transitions, 5559 flow [2023-08-24 01:15:39,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 01:15:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 01:15:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3188 transitions. [2023-08-24 01:15:39,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3422436929683306 [2023-08-24 01:15:39,321 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3188 transitions. [2023-08-24 01:15:39,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3188 transitions. [2023-08-24 01:15:39,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:39,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3188 transitions. [2023-08-24 01:15:39,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.53333333333333) internal successors, (3188), 15 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:39,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:39,332 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:39,332 INFO L175 Difference]: Start difference. First operand has 129 places, 187 transitions, 2347 flow. Second operand 15 states and 3188 transitions. [2023-08-24 01:15:39,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 466 transitions, 5559 flow [2023-08-24 01:15:39,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 466 transitions, 5293 flow, removed 61 selfloop flow, removed 7 redundant places. [2023-08-24 01:15:39,638 INFO L231 Difference]: Finished difference. Result has 144 places, 262 transitions, 3742 flow [2023-08-24 01:15:39,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3742, PETRI_PLACES=144, PETRI_TRANSITIONS=262} [2023-08-24 01:15:39,639 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 106 predicate places. [2023-08-24 01:15:39,639 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 262 transitions, 3742 flow [2023-08-24 01:15:39,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:39,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:39,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:39,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 01:15:39,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:39,846 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:39,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:39,846 INFO L85 PathProgramCache]: Analyzing trace with hash 313774616, now seen corresponding path program 5 times [2023-08-24 01:15:39,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:39,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142593681] [2023-08-24 01:15:39,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:39,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:40,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:40,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:40,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142593681] [2023-08-24 01:15:40,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142593681] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:40,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516178750] [2023-08-24 01:15:40,504 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 01:15:40,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:40,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:40,505 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:15:40,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 01:15:40,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:15:40,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:15:40,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-24 01:15:40,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:40,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:15:41,305 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:15:41,305 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:15:41,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:41,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516178750] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:41,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:15:41,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 23 [2023-08-24 01:15:41,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928079434] [2023-08-24 01:15:41,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:41,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:15:41,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:15:41,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2023-08-24 01:15:41,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 621 [2023-08-24 01:15:41,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 262 transitions, 3742 flow. Second operand has 10 states, 10 states have (on average 207.3) internal successors, (2073), 10 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:41,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:41,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 621 [2023-08-24 01:15:41,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:43,927 INFO L124 PetriNetUnfolderBase]: 6080/9004 cut-off events. [2023-08-24 01:15:43,927 INFO L125 PetriNetUnfolderBase]: For 63509/63509 co-relation queries the response was YES. [2023-08-24 01:15:43,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43212 conditions, 9004 events. 6080/9004 cut-off events. For 63509/63509 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 50381 event pairs, 1773 based on Foata normal form. 3/8485 useless extension candidates. Maximal degree in co-relation 43161. Up to 2652 conditions per place. [2023-08-24 01:15:43,969 INFO L140 encePairwiseOnDemand]: 608/621 looper letters, 296 selfloop transitions, 130 changer transitions 15/441 dead transitions. [2023-08-24 01:15:43,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 441 transitions, 5848 flow [2023-08-24 01:15:43,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 01:15:43,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 01:15:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3070 transitions. [2023-08-24 01:15:43,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353117092247527 [2023-08-24 01:15:43,973 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3070 transitions. [2023-08-24 01:15:43,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3070 transitions. [2023-08-24 01:15:43,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:43,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3070 transitions. [2023-08-24 01:15:43,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 219.28571428571428) internal successors, (3070), 14 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:43,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:43,983 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:43,984 INFO L175 Difference]: Start difference. First operand has 144 places, 262 transitions, 3742 flow. Second operand 14 states and 3070 transitions. [2023-08-24 01:15:43,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 441 transitions, 5848 flow [2023-08-24 01:15:44,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 441 transitions, 5728 flow, removed 60 selfloop flow, removed 1 redundant places. [2023-08-24 01:15:44,340 INFO L231 Difference]: Finished difference. Result has 157 places, 266 transitions, 3983 flow [2023-08-24 01:15:44,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=3646, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3983, PETRI_PLACES=157, PETRI_TRANSITIONS=266} [2023-08-24 01:15:44,341 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 119 predicate places. [2023-08-24 01:15:44,341 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 266 transitions, 3983 flow [2023-08-24 01:15:44,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 207.3) internal successors, (2073), 10 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:44,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:44,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:44,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 01:15:44,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:44,542 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:44,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:44,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1092226804, now seen corresponding path program 2 times [2023-08-24 01:15:44,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:44,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402253008] [2023-08-24 01:15:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:44,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:44,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:44,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402253008] [2023-08-24 01:15:44,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402253008] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:44,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134255444] [2023-08-24 01:15:44,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:15:44,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:44,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:44,714 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:15:44,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 01:15:44,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 01:15:44,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:15:44,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-24 01:15:44,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:45,278 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:15:45,278 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 93 [2023-08-24 01:15:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:15:45,332 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:15:45,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134255444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:45,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:15:45,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-08-24 01:15:45,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466039612] [2023-08-24 01:15:45,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:45,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:15:45,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:45,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:15:45,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-08-24 01:15:45,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:15:45,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 266 transitions, 3983 flow. Second operand has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:45,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:45,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:15:45,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:47,110 INFO L124 PetriNetUnfolderBase]: 7343/10820 cut-off events. [2023-08-24 01:15:47,110 INFO L125 PetriNetUnfolderBase]: For 80775/80775 co-relation queries the response was YES. [2023-08-24 01:15:47,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52587 conditions, 10820 events. 7343/10820 cut-off events. For 80775/80775 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 62072 event pairs, 1180 based on Foata normal form. 57/10236 useless extension candidates. Maximal degree in co-relation 52534. Up to 4224 conditions per place. [2023-08-24 01:15:47,280 INFO L140 encePairwiseOnDemand]: 606/621 looper letters, 262 selfloop transitions, 197 changer transitions 13/472 dead transitions. [2023-08-24 01:15:47,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 472 transitions, 6829 flow [2023-08-24 01:15:47,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 01:15:47,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 01:15:47,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2934 transitions. [2023-08-24 01:15:47,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33747412008281574 [2023-08-24 01:15:47,284 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2934 transitions. [2023-08-24 01:15:47,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2934 transitions. [2023-08-24 01:15:47,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:47,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2934 transitions. [2023-08-24 01:15:47,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 209.57142857142858) internal successors, (2934), 14 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:47,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:47,294 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:47,294 INFO L175 Difference]: Start difference. First operand has 157 places, 266 transitions, 3983 flow. Second operand 14 states and 2934 transitions. [2023-08-24 01:15:47,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 472 transitions, 6829 flow [2023-08-24 01:15:47,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 472 transitions, 6528 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-08-24 01:15:47,792 INFO L231 Difference]: Finished difference. Result has 168 places, 339 transitions, 5347 flow [2023-08-24 01:15:47,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=3746, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5347, PETRI_PLACES=168, PETRI_TRANSITIONS=339} [2023-08-24 01:15:47,793 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 130 predicate places. [2023-08-24 01:15:47,793 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 339 transitions, 5347 flow [2023-08-24 01:15:47,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:47,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:47,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:47,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 01:15:47,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-24 01:15:47,994 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:47,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:47,995 INFO L85 PathProgramCache]: Analyzing trace with hash -31351128, now seen corresponding path program 2 times [2023-08-24 01:15:47,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:47,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882026984] [2023-08-24 01:15:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:47,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:48,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:48,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882026984] [2023-08-24 01:15:48,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882026984] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:48,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590531601] [2023-08-24 01:15:48,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:15:48,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:48,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:48,169 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:15:48,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 01:15:48,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 01:15:48,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:15:48,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-24 01:15:48,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:48,740 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:15:48,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 93 [2023-08-24 01:15:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:15:48,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:15:48,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590531601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:48,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:15:48,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-08-24 01:15:48,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418292561] [2023-08-24 01:15:48,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:48,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:15:48,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:15:48,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-08-24 01:15:48,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:15:48,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 339 transitions, 5347 flow. Second operand has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:48,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:48,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:15:48,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:51,184 INFO L124 PetriNetUnfolderBase]: 9661/14079 cut-off events. [2023-08-24 01:15:51,184 INFO L125 PetriNetUnfolderBase]: For 129502/129502 co-relation queries the response was YES. [2023-08-24 01:15:51,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74323 conditions, 14079 events. 9661/14079 cut-off events. For 129502/129502 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 82169 event pairs, 1936 based on Foata normal form. 95/13348 useless extension candidates. Maximal degree in co-relation 74262. Up to 7445 conditions per place. [2023-08-24 01:15:51,284 INFO L140 encePairwiseOnDemand]: 606/621 looper letters, 373 selfloop transitions, 212 changer transitions 13/598 dead transitions. [2023-08-24 01:15:51,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 598 transitions, 9222 flow [2023-08-24 01:15:51,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 01:15:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 01:15:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2761 transitions. [2023-08-24 01:15:51,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34200421156942895 [2023-08-24 01:15:51,287 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2761 transitions. [2023-08-24 01:15:51,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2761 transitions. [2023-08-24 01:15:51,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:51,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2761 transitions. [2023-08-24 01:15:51,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 212.3846153846154) internal successors, (2761), 13 states have internal predecessors, (2761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:51,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 621.0) internal successors, (8694), 14 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:51,297 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 621.0) internal successors, (8694), 14 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:51,297 INFO L175 Difference]: Start difference. First operand has 168 places, 339 transitions, 5347 flow. Second operand 13 states and 2761 transitions. [2023-08-24 01:15:51,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 598 transitions, 9222 flow [2023-08-24 01:15:52,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 598 transitions, 8877 flow, removed 122 selfloop flow, removed 3 redundant places. [2023-08-24 01:15:52,474 INFO L231 Difference]: Finished difference. Result has 185 places, 431 transitions, 7208 flow [2023-08-24 01:15:52,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=5080, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7208, PETRI_PLACES=185, PETRI_TRANSITIONS=431} [2023-08-24 01:15:52,474 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 147 predicate places. [2023-08-24 01:15:52,475 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 431 transitions, 7208 flow [2023-08-24 01:15:52,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:52,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:52,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:52,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 01:15:52,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-24 01:15:52,682 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:52,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:52,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1392507744, now seen corresponding path program 3 times [2023-08-24 01:15:52,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:52,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464187490] [2023-08-24 01:15:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:52,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:52,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:52,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464187490] [2023-08-24 01:15:52,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464187490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:52,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468044123] [2023-08-24 01:15:52,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:15:52,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:52,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:52,859 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:15:52,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 01:15:52,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 01:15:52,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:15:53,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-24 01:15:53,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:15:53,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:15:53,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468044123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:53,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:15:53,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-08-24 01:15:53,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752195416] [2023-08-24 01:15:53,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:53,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:15:53,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:53,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:15:53,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-08-24 01:15:53,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:15:53,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 431 transitions, 7208 flow. Second operand has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:53,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:53,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:15:53,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:55,837 INFO L124 PetriNetUnfolderBase]: 9586/13984 cut-off events. [2023-08-24 01:15:55,838 INFO L125 PetriNetUnfolderBase]: For 153582/153582 co-relation queries the response was YES. [2023-08-24 01:15:55,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78356 conditions, 13984 events. 9586/13984 cut-off events. For 153582/153582 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 81550 event pairs, 1682 based on Foata normal form. 17/13177 useless extension candidates. Maximal degree in co-relation 78288. Up to 6046 conditions per place. [2023-08-24 01:15:55,933 INFO L140 encePairwiseOnDemand]: 606/621 looper letters, 315 selfloop transitions, 228 changer transitions 9/552 dead transitions. [2023-08-24 01:15:55,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 552 transitions, 9263 flow [2023-08-24 01:15:55,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 01:15:55,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 01:15:55,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2520 transitions. [2023-08-24 01:15:55,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33816425120772947 [2023-08-24 01:15:55,937 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2520 transitions. [2023-08-24 01:15:55,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2520 transitions. [2023-08-24 01:15:55,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:55,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2520 transitions. [2023-08-24 01:15:55,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 210.0) internal successors, (2520), 12 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:55,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 621.0) internal successors, (8073), 13 states have internal predecessors, (8073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:55,946 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 621.0) internal successors, (8073), 13 states have internal predecessors, (8073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:55,946 INFO L175 Difference]: Start difference. First operand has 185 places, 431 transitions, 7208 flow. Second operand 12 states and 2520 transitions. [2023-08-24 01:15:55,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 552 transitions, 9263 flow [2023-08-24 01:15:57,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 552 transitions, 9134 flow, removed 63 selfloop flow, removed 1 redundant places. [2023-08-24 01:15:57,510 INFO L231 Difference]: Finished difference. Result has 199 places, 433 transitions, 7675 flow [2023-08-24 01:15:57,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=7063, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7675, PETRI_PLACES=199, PETRI_TRANSITIONS=433} [2023-08-24 01:15:57,511 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 161 predicate places. [2023-08-24 01:15:57,511 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 433 transitions, 7675 flow [2023-08-24 01:15:57,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:57,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:57,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:57,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 01:15:57,712 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,SelfDestructingSolverStorable27 [2023-08-24 01:15:57,713 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:57,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:57,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1387111442, now seen corresponding path program 6 times [2023-08-24 01:15:57,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:57,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705518975] [2023-08-24 01:15:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:57,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:15:58,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:58,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705518975] [2023-08-24 01:15:58,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705518975] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:58,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066560103] [2023-08-24 01:15:58,209 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 01:15:58,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:58,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:58,210 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:15:58,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 01:15:58,349 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-24 01:15:58,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:15:58,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-24 01:15:58,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:58,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:15:58,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:15:58,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066560103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:58,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:15:58,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 17 [2023-08-24 01:15:58,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600447340] [2023-08-24 01:15:58,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:58,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:15:58,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:58,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:15:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-08-24 01:15:58,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:15:58,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 433 transitions, 7675 flow. Second operand has 11 states, 11 states have (on average 199.0909090909091) internal successors, (2190), 11 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:58,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:58,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:15:58,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:16:01,422 INFO L124 PetriNetUnfolderBase]: 9763/14302 cut-off events. [2023-08-24 01:16:01,422 INFO L125 PetriNetUnfolderBase]: For 171278/171278 co-relation queries the response was YES. [2023-08-24 01:16:01,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82511 conditions, 14302 events. 9763/14302 cut-off events. For 171278/171278 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 84628 event pairs, 1896 based on Foata normal form. 3/13455 useless extension candidates. Maximal degree in co-relation 82438. Up to 8709 conditions per place. [2023-08-24 01:16:01,611 INFO L140 encePairwiseOnDemand]: 608/621 looper letters, 356 selfloop transitions, 193 changer transitions 8/557 dead transitions. [2023-08-24 01:16:01,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 557 transitions, 9724 flow [2023-08-24 01:16:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 01:16:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 01:16:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2514 transitions. [2023-08-24 01:16:01,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33735909822866345 [2023-08-24 01:16:01,614 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2514 transitions. [2023-08-24 01:16:01,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2514 transitions. [2023-08-24 01:16:01,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:16:01,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2514 transitions. [2023-08-24 01:16:01,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 209.5) internal successors, (2514), 12 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:01,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 621.0) internal successors, (8073), 13 states have internal predecessors, (8073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:01,622 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 621.0) internal successors, (8073), 13 states have internal predecessors, (8073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:01,622 INFO L175 Difference]: Start difference. First operand has 199 places, 433 transitions, 7675 flow. Second operand 12 states and 2514 transitions. [2023-08-24 01:16:01,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 557 transitions, 9724 flow [2023-08-24 01:16:02,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 557 transitions, 9438 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-24 01:16:02,966 INFO L231 Difference]: Finished difference. Result has 208 places, 455 transitions, 8304 flow [2023-08-24 01:16:02,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=7395, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8304, PETRI_PLACES=208, PETRI_TRANSITIONS=455} [2023-08-24 01:16:02,966 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 170 predicate places. [2023-08-24 01:16:02,967 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 455 transitions, 8304 flow [2023-08-24 01:16:02,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 199.0909090909091) internal successors, (2190), 11 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:02,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:16:02,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:16:02,972 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 01:16:03,168 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,SelfDestructingSolverStorable28 [2023-08-24 01:16:03,169 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:16:03,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:16:03,169 INFO L85 PathProgramCache]: Analyzing trace with hash -229360000, now seen corresponding path program 4 times [2023-08-24 01:16:03,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:16:03,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023223229] [2023-08-24 01:16:03,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:16:03,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:16:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:16:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:03,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:16:03,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023223229] [2023-08-24 01:16:03,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023223229] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:03,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060920564] [2023-08-24 01:16:03,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:16:03,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:03,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:16:03,397 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:16:03,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-24 01:16:03,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:16:03,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:16:03,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-24 01:16:03,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:16:03,875 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:16:03,876 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 93 [2023-08-24 01:16:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:03,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:16:04,092 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:16:04,092 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:16:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:16:04,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060920564] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:04,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:16:04,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-08-24 01:16:04,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995585346] [2023-08-24 01:16:04,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:16:04,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:16:04,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:16:04,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:16:04,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2023-08-24 01:16:04,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:16:04,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 455 transitions, 8304 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:04,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:16:04,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:16:04,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:16:08,093 INFO L124 PetriNetUnfolderBase]: 10634/15526 cut-off events. [2023-08-24 01:16:08,093 INFO L125 PetriNetUnfolderBase]: For 198954/198954 co-relation queries the response was YES. [2023-08-24 01:16:08,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92217 conditions, 15526 events. 10634/15526 cut-off events. For 198954/198954 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 92216 event pairs, 1388 based on Foata normal form. 3/14615 useless extension candidates. Maximal degree in co-relation 92141. Up to 5250 conditions per place. [2023-08-24 01:16:08,197 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 416 selfloop transitions, 244 changer transitions 23/683 dead transitions. [2023-08-24 01:16:08,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 683 transitions, 12015 flow [2023-08-24 01:16:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 01:16:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 01:16:08,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2964 transitions. [2023-08-24 01:16:08,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409247757073844 [2023-08-24 01:16:08,201 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2964 transitions. [2023-08-24 01:16:08,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2964 transitions. [2023-08-24 01:16:08,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:16:08,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2964 transitions. [2023-08-24 01:16:08,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 211.71428571428572) internal successors, (2964), 14 states have internal predecessors, (2964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:08,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:08,209 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:08,209 INFO L175 Difference]: Start difference. First operand has 208 places, 455 transitions, 8304 flow. Second operand 14 states and 2964 transitions. [2023-08-24 01:16:08,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 683 transitions, 12015 flow [2023-08-24 01:16:09,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 683 transitions, 11899 flow, removed 55 selfloop flow, removed 2 redundant places. [2023-08-24 01:16:09,948 INFO L231 Difference]: Finished difference. Result has 226 places, 504 transitions, 9922 flow [2023-08-24 01:16:09,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=8220, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9922, PETRI_PLACES=226, PETRI_TRANSITIONS=504} [2023-08-24 01:16:09,949 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 188 predicate places. [2023-08-24 01:16:09,949 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 504 transitions, 9922 flow [2023-08-24 01:16:09,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:09,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:16:09,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:16:09,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-24 01:16:10,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:10,156 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:16:10,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:16:10,156 INFO L85 PathProgramCache]: Analyzing trace with hash 361156156, now seen corresponding path program 7 times [2023-08-24 01:16:10,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:16:10,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948602666] [2023-08-24 01:16:10,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:16:10,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:16:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:16:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:10,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:16:10,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948602666] [2023-08-24 01:16:10,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948602666] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:10,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142677400] [2023-08-24 01:16:10,613 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 01:16:10,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:10,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:16:10,614 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:16:10,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-24 01:16:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:16:10,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-24 01:16:10,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:16:10,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:10,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:16:11,379 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:16:11,380 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:16:12,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:12,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142677400] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:12,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:16:12,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 23 [2023-08-24 01:16:12,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549235883] [2023-08-24 01:16:12,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:16:12,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:16:12,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:16:12,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:16:12,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2023-08-24 01:16:12,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 621 [2023-08-24 01:16:12,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 504 transitions, 9922 flow. Second operand has 10 states, 10 states have (on average 207.3) internal successors, (2073), 10 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:12,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:16:12,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 621 [2023-08-24 01:16:12,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:16:16,031 INFO L124 PetriNetUnfolderBase]: 10576/15427 cut-off events. [2023-08-24 01:16:16,031 INFO L125 PetriNetUnfolderBase]: For 284508/284508 co-relation queries the response was YES. [2023-08-24 01:16:16,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100003 conditions, 15427 events. 10576/15427 cut-off events. For 284508/284508 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 91284 event pairs, 3261 based on Foata normal form. 2/14515 useless extension candidates. Maximal degree in co-relation 99919. Up to 6301 conditions per place. [2023-08-24 01:16:16,261 INFO L140 encePairwiseOnDemand]: 608/621 looper letters, 415 selfloop transitions, 243 changer transitions 28/686 dead transitions. [2023-08-24 01:16:16,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 686 transitions, 12913 flow [2023-08-24 01:16:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 01:16:16,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 01:16:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3073 transitions. [2023-08-24 01:16:16,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3534621578099839 [2023-08-24 01:16:16,264 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3073 transitions. [2023-08-24 01:16:16,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3073 transitions. [2023-08-24 01:16:16,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:16:16,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3073 transitions. [2023-08-24 01:16:16,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 219.5) internal successors, (3073), 14 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:16,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:16,270 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:16,270 INFO L175 Difference]: Start difference. First operand has 226 places, 504 transitions, 9922 flow. Second operand 14 states and 3073 transitions. [2023-08-24 01:16:16,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 686 transitions, 12913 flow [2023-08-24 01:16:18,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 686 transitions, 12542 flow, removed 77 selfloop flow, removed 7 redundant places. [2023-08-24 01:16:18,539 INFO L231 Difference]: Finished difference. Result has 233 places, 501 transitions, 10064 flow [2023-08-24 01:16:18,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=9611, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10064, PETRI_PLACES=233, PETRI_TRANSITIONS=501} [2023-08-24 01:16:18,539 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 195 predicate places. [2023-08-24 01:16:18,540 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 501 transitions, 10064 flow [2023-08-24 01:16:18,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 207.3) internal successors, (2073), 10 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:18,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:16:18,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:16:18,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-24 01:16:18,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-08-24 01:16:18,745 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:16:18,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:16:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1394908038, now seen corresponding path program 5 times [2023-08-24 01:16:18,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:16:18,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203074524] [2023-08-24 01:16:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:16:18,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:16:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:16:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:18,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:16:18,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203074524] [2023-08-24 01:16:18,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203074524] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:18,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572615162] [2023-08-24 01:16:18,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 01:16:18,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:18,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:16:18,899 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:16:18,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-24 01:16:19,016 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:16:19,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:16:19,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-24 01:16:19,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:16:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:19,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:16:19,677 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:16:19,677 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:16:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:16:20,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572615162] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:20,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:16:20,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-08-24 01:16:20,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181324071] [2023-08-24 01:16:20,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:16:20,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:16:20,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:16:20,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:16:20,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2023-08-24 01:16:20,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:16:20,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 501 transitions, 10064 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:20,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:16:20,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:16:20,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:16:24,589 INFO L124 PetriNetUnfolderBase]: 10960/16016 cut-off events. [2023-08-24 01:16:24,589 INFO L125 PetriNetUnfolderBase]: For 270319/270319 co-relation queries the response was YES. [2023-08-24 01:16:24,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103940 conditions, 16016 events. 10960/16016 cut-off events. For 270319/270319 co-relation queries the response was YES. Maximal size of possible extension queue 755. Compared 96340 event pairs, 1198 based on Foata normal form. 5/15059 useless extension candidates. Maximal degree in co-relation 103855. Up to 5692 conditions per place. [2023-08-24 01:16:24,875 INFO L140 encePairwiseOnDemand]: 605/621 looper letters, 419 selfloop transitions, 285 changer transitions 17/721 dead transitions. [2023-08-24 01:16:24,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 721 transitions, 13671 flow [2023-08-24 01:16:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 01:16:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 01:16:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3180 transitions. [2023-08-24 01:16:24,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3413848631239936 [2023-08-24 01:16:24,889 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3180 transitions. [2023-08-24 01:16:24,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3180 transitions. [2023-08-24 01:16:24,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:16:24,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3180 transitions. [2023-08-24 01:16:24,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.0) internal successors, (3180), 15 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:24,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:24,909 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:24,910 INFO L175 Difference]: Start difference. First operand has 233 places, 501 transitions, 10064 flow. Second operand 15 states and 3180 transitions. [2023-08-24 01:16:24,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 721 transitions, 13671 flow [2023-08-24 01:16:27,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 721 transitions, 13139 flow, removed 23 selfloop flow, removed 11 redundant places. [2023-08-24 01:16:27,210 INFO L231 Difference]: Finished difference. Result has 242 places, 524 transitions, 10954 flow [2023-08-24 01:16:27,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=9611, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10954, PETRI_PLACES=242, PETRI_TRANSITIONS=524} [2023-08-24 01:16:27,210 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 204 predicate places. [2023-08-24 01:16:27,210 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 524 transitions, 10954 flow [2023-08-24 01:16:27,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:27,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:16:27,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:16:27,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-24 01:16:27,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:27,411 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:16:27,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:16:27,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1422128944, now seen corresponding path program 6 times [2023-08-24 01:16:27,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:16:27,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046250838] [2023-08-24 01:16:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:16:27,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:16:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:16:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:27,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:16:27,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046250838] [2023-08-24 01:16:27,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046250838] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:27,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826819401] [2023-08-24 01:16:27,562 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 01:16:27,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:27,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:16:27,565 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:16:27,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-24 01:16:27,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-24 01:16:27,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:16:27,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-24 01:16:27,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:16:28,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:16:28,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:16:28,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826819401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:16:28,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:16:28,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-08-24 01:16:28,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210650139] [2023-08-24 01:16:28,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:16:28,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:16:28,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:16:28,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:16:28,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-08-24 01:16:28,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:16:28,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 524 transitions, 10954 flow. Second operand has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:28,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:16:28,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:16:28,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:16:31,458 INFO L124 PetriNetUnfolderBase]: 10772/15831 cut-off events. [2023-08-24 01:16:31,459 INFO L125 PetriNetUnfolderBase]: For 311610/311610 co-relation queries the response was YES. [2023-08-24 01:16:31,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106023 conditions, 15831 events. 10772/15831 cut-off events. For 311610/311610 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 95814 event pairs, 1822 based on Foata normal form. 53/14918 useless extension candidates. Maximal degree in co-relation 105932. Up to 6881 conditions per place. [2023-08-24 01:16:31,575 INFO L140 encePairwiseOnDemand]: 606/621 looper letters, 366 selfloop transitions, 278 changer transitions 14/658 dead transitions. [2023-08-24 01:16:31,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 658 transitions, 13518 flow [2023-08-24 01:16:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 01:16:31,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 01:16:31,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2729 transitions. [2023-08-24 01:16:31,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380403815186424 [2023-08-24 01:16:31,578 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2729 transitions. [2023-08-24 01:16:31,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2729 transitions. [2023-08-24 01:16:31,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:16:31,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2729 transitions. [2023-08-24 01:16:31,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 209.92307692307693) internal successors, (2729), 13 states have internal predecessors, (2729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:31,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 621.0) internal successors, (8694), 14 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:31,584 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 621.0) internal successors, (8694), 14 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:31,584 INFO L175 Difference]: Start difference. First operand has 242 places, 524 transitions, 10954 flow. Second operand 13 states and 2729 transitions. [2023-08-24 01:16:31,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 658 transitions, 13518 flow [2023-08-24 01:16:34,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 658 transitions, 13074 flow, removed 77 selfloop flow, removed 7 redundant places. [2023-08-24 01:16:34,283 INFO L231 Difference]: Finished difference. Result has 252 places, 529 transitions, 11330 flow [2023-08-24 01:16:34,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=10408, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11330, PETRI_PLACES=252, PETRI_TRANSITIONS=529} [2023-08-24 01:16:34,284 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 214 predicate places. [2023-08-24 01:16:34,284 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 529 transitions, 11330 flow [2023-08-24 01:16:34,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:34,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:16:34,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:16:34,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-24 01:16:34,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:34,485 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:16:34,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:16:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1358580658, now seen corresponding path program 7 times [2023-08-24 01:16:34,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:16:34,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27846897] [2023-08-24 01:16:34,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:16:34,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:16:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:16:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:34,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:16:34,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27846897] [2023-08-24 01:16:34,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27846897] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:34,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526177102] [2023-08-24 01:16:34,612 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 01:16:34,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:34,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:16:34,613 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:16:34,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-24 01:16:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:16:34,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-24 01:16:34,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:16:35,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:35,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:16:35,285 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:16:35,286 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:16:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:16:35,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526177102] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:35,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:16:35,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-08-24 01:16:35,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343181051] [2023-08-24 01:16:35,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:16:35,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:16:35,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:16:35,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:16:35,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2023-08-24 01:16:35,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:16:35,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 529 transitions, 11330 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:35,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:16:35,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:16:35,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:16:39,738 INFO L124 PetriNetUnfolderBase]: 10815/15934 cut-off events. [2023-08-24 01:16:39,738 INFO L125 PetriNetUnfolderBase]: For 322516/322516 co-relation queries the response was YES. [2023-08-24 01:16:39,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109360 conditions, 15934 events. 10815/15934 cut-off events. For 322516/322516 co-relation queries the response was YES. Maximal size of possible extension queue 755. Compared 97174 event pairs, 1544 based on Foata normal form. 1/14969 useless extension candidates. Maximal degree in co-relation 109264. Up to 4214 conditions per place. [2023-08-24 01:16:39,872 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 430 selfloop transitions, 274 changer transitions 23/727 dead transitions. [2023-08-24 01:16:39,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 727 transitions, 14757 flow [2023-08-24 01:16:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 01:16:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 01:16:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3174 transitions. [2023-08-24 01:16:39,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2023-08-24 01:16:39,875 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3174 transitions. [2023-08-24 01:16:39,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3174 transitions. [2023-08-24 01:16:39,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:16:39,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3174 transitions. [2023-08-24 01:16:39,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 211.6) internal successors, (3174), 15 states have internal predecessors, (3174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:39,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:39,884 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:39,884 INFO L175 Difference]: Start difference. First operand has 252 places, 529 transitions, 11330 flow. Second operand 15 states and 3174 transitions. [2023-08-24 01:16:39,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 727 transitions, 14757 flow [2023-08-24 01:16:42,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 727 transitions, 14327 flow, removed 52 selfloop flow, removed 7 redundant places. [2023-08-24 01:16:42,952 INFO L231 Difference]: Finished difference. Result has 263 places, 536 transitions, 11705 flow [2023-08-24 01:16:42,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=10954, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11705, PETRI_PLACES=263, PETRI_TRANSITIONS=536} [2023-08-24 01:16:42,953 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 225 predicate places. [2023-08-24 01:16:42,953 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 536 transitions, 11705 flow [2023-08-24 01:16:42,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:42,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:16:42,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:16:42,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-24 01:16:43,155 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,SelfDestructingSolverStorable33 [2023-08-24 01:16:43,155 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:16:43,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:16:43,155 INFO L85 PathProgramCache]: Analyzing trace with hash 446168390, now seen corresponding path program 8 times [2023-08-24 01:16:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:16:43,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364040069] [2023-08-24 01:16:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:16:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:16:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:16:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:43,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:16:43,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364040069] [2023-08-24 01:16:43,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364040069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:43,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008701550] [2023-08-24 01:16:43,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:16:43,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:43,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:16:43,273 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:16:43,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-24 01:16:43,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 01:16:43,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:16:43,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-24 01:16:43,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:16:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:16:43,700 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:16:43,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008701550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:16:43,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:16:43,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-08-24 01:16:43,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157299980] [2023-08-24 01:16:43,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:16:43,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:16:43,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:16:43,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:16:43,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-08-24 01:16:43,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:16:43,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 536 transitions, 11705 flow. Second operand has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:43,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:16:43,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:16:43,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:16:47,084 INFO L124 PetriNetUnfolderBase]: 10862/16023 cut-off events. [2023-08-24 01:16:47,084 INFO L125 PetriNetUnfolderBase]: For 346999/346999 co-relation queries the response was YES. [2023-08-24 01:16:47,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110169 conditions, 16023 events. 10862/16023 cut-off events. For 346999/346999 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 97863 event pairs, 1770 based on Foata normal form. 17/15074 useless extension candidates. Maximal degree in co-relation 110071. Up to 7377 conditions per place. [2023-08-24 01:16:47,229 INFO L140 encePairwiseOnDemand]: 606/621 looper letters, 387 selfloop transitions, 272 changer transitions 29/688 dead transitions. [2023-08-24 01:16:47,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 688 transitions, 14531 flow [2023-08-24 01:16:47,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 01:16:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 01:16:47,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3142 transitions. [2023-08-24 01:16:47,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33730542136339237 [2023-08-24 01:16:47,233 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3142 transitions. [2023-08-24 01:16:47,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3142 transitions. [2023-08-24 01:16:47,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:16:47,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3142 transitions. [2023-08-24 01:16:47,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 209.46666666666667) internal successors, (3142), 15 states have internal predecessors, (3142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:47,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:47,243 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:47,243 INFO L175 Difference]: Start difference. First operand has 263 places, 536 transitions, 11705 flow. Second operand 15 states and 3142 transitions. [2023-08-24 01:16:47,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 688 transitions, 14531 flow [2023-08-24 01:16:50,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 688 transitions, 14049 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-08-24 01:16:50,473 INFO L231 Difference]: Finished difference. Result has 267 places, 544 transitions, 12006 flow [2023-08-24 01:16:50,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=11235, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=12006, PETRI_PLACES=267, PETRI_TRANSITIONS=544} [2023-08-24 01:16:50,473 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 229 predicate places. [2023-08-24 01:16:50,473 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 544 transitions, 12006 flow [2023-08-24 01:16:50,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:50,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:16:50,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:16:50,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-24 01:16:50,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:50,674 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:16:50,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:16:50,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1092191938, now seen corresponding path program 9 times [2023-08-24 01:16:50,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:16:50,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108244708] [2023-08-24 01:16:50,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:16:50,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:16:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:16:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:50,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:16:50,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108244708] [2023-08-24 01:16:50,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108244708] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:50,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814548406] [2023-08-24 01:16:50,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:16:50,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:50,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:16:50,801 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:16:50,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-24 01:16:50,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 01:16:50,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:16:50,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-24 01:16:50,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:16:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:16:51,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:16:51,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814548406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:16:51,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:16:51,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-08-24 01:16:51,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485932114] [2023-08-24 01:16:51,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:16:51,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:16:51,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:16:51,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:16:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-08-24 01:16:51,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:16:51,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 544 transitions, 12006 flow. Second operand has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:51,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:16:51,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:16:51,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:16:54,913 INFO L124 PetriNetUnfolderBase]: 10813/15938 cut-off events. [2023-08-24 01:16:54,913 INFO L125 PetriNetUnfolderBase]: For 376661/376661 co-relation queries the response was YES. [2023-08-24 01:16:54,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113202 conditions, 15938 events. 10813/15938 cut-off events. For 376661/376661 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 97137 event pairs, 1772 based on Foata normal form. 1/14973 useless extension candidates. Maximal degree in co-relation 113101. Up to 7340 conditions per place. [2023-08-24 01:16:55,059 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 395 selfloop transitions, 273 changer transitions 13/681 dead transitions. [2023-08-24 01:16:55,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 681 transitions, 14532 flow [2023-08-24 01:16:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 01:16:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 01:16:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2941 transitions. [2023-08-24 01:16:55,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33827927306188177 [2023-08-24 01:16:55,063 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2941 transitions. [2023-08-24 01:16:55,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2941 transitions. [2023-08-24 01:16:55,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:16:55,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2941 transitions. [2023-08-24 01:16:55,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 210.07142857142858) internal successors, (2941), 14 states have internal predecessors, (2941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:55,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:55,070 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:55,070 INFO L175 Difference]: Start difference. First operand has 267 places, 544 transitions, 12006 flow. Second operand 14 states and 2941 transitions. [2023-08-24 01:16:55,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 681 transitions, 14532 flow [2023-08-24 01:16:58,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 681 transitions, 14226 flow, removed 42 selfloop flow, removed 7 redundant places. [2023-08-24 01:16:58,670 INFO L231 Difference]: Finished difference. Result has 272 places, 544 transitions, 12281 flow [2023-08-24 01:16:58,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=11726, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12281, PETRI_PLACES=272, PETRI_TRANSITIONS=544} [2023-08-24 01:16:58,671 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 234 predicate places. [2023-08-24 01:16:58,671 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 544 transitions, 12281 flow [2023-08-24 01:16:58,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:16:58,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:16:58,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:16:58,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-24 01:16:58,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:58,872 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:16:58,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:16:58,872 INFO L85 PathProgramCache]: Analyzing trace with hash 991640120, now seen corresponding path program 10 times [2023-08-24 01:16:58,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:16:58,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002963969] [2023-08-24 01:16:58,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:16:58,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:16:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:16:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:59,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:16:59,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002963969] [2023-08-24 01:16:59,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002963969] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:16:59,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990775288] [2023-08-24 01:16:59,011 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:16:59,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:16:59,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:16:59,012 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:16:59,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-24 01:16:59,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:16:59,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:16:59,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-24 01:16:59,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:16:59,481 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:16:59,481 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 93 [2023-08-24 01:16:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:16:59,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:16:59,713 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:16:59,714 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:17:00,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:17:00,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990775288] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:17:00,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:17:00,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-08-24 01:17:00,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485470758] [2023-08-24 01:17:00,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:17:00,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:17:00,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:17:00,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:17:00,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2023-08-24 01:17:00,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:17:00,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 544 transitions, 12281 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:00,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:17:00,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:17:00,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:17:04,717 INFO L124 PetriNetUnfolderBase]: 11684/17108 cut-off events. [2023-08-24 01:17:04,718 INFO L125 PetriNetUnfolderBase]: For 393787/393787 co-relation queries the response was YES. [2023-08-24 01:17:04,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125688 conditions, 17108 events. 11684/17108 cut-off events. For 393787/393787 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 104299 event pairs, 1302 based on Foata normal form. 2/16092 useless extension candidates. Maximal degree in co-relation 125587. Up to 4433 conditions per place. [2023-08-24 01:17:04,888 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 423 selfloop transitions, 345 changer transitions 28/796 dead transitions. [2023-08-24 01:17:04,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 796 transitions, 17017 flow [2023-08-24 01:17:04,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 01:17:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 01:17:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3191 transitions. [2023-08-24 01:17:04,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34256575415995705 [2023-08-24 01:17:04,892 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3191 transitions. [2023-08-24 01:17:04,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3191 transitions. [2023-08-24 01:17:04,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:17:04,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3191 transitions. [2023-08-24 01:17:04,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.73333333333332) internal successors, (3191), 15 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:04,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:04,901 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:04,901 INFO L175 Difference]: Start difference. First operand has 272 places, 544 transitions, 12281 flow. Second operand 15 states and 3191 transitions. [2023-08-24 01:17:04,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 796 transitions, 17017 flow [2023-08-24 01:17:08,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 796 transitions, 16409 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-08-24 01:17:08,890 INFO L231 Difference]: Finished difference. Result has 283 places, 593 transitions, 13944 flow [2023-08-24 01:17:08,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=11776, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=13944, PETRI_PLACES=283, PETRI_TRANSITIONS=593} [2023-08-24 01:17:08,891 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 245 predicate places. [2023-08-24 01:17:08,891 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 593 transitions, 13944 flow [2023-08-24 01:17:08,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:08,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:17:08,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:17:08,902 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 01:17:09,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:17:09,097 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:17:09,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:17:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash -117944948, now seen corresponding path program 11 times [2023-08-24 01:17:09,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:17:09,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282214400] [2023-08-24 01:17:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:17:09,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:17:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:17:09,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:17:09,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:17:09,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282214400] [2023-08-24 01:17:09,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282214400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:17:09,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791865110] [2023-08-24 01:17:09,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 01:17:09,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:17:09,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:17:09,217 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:17:09,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-24 01:17:09,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:17:09,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:17:09,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-24 01:17:09,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:17:09,687 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:17:09,687 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 91 [2023-08-24 01:17:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:17:09,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:17:10,013 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:17:10,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:17:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:17:10,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791865110] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:17:10,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:17:10,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-08-24 01:17:10,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217921290] [2023-08-24 01:17:10,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:17:10,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:17:10,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:17:10,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:17:10,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2023-08-24 01:17:10,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:17:10,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 593 transitions, 13944 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:10,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:17:10,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:17:10,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:17:15,235 INFO L124 PetriNetUnfolderBase]: 12329/18000 cut-off events. [2023-08-24 01:17:15,235 INFO L125 PetriNetUnfolderBase]: For 475614/475614 co-relation queries the response was YES. [2023-08-24 01:17:15,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138592 conditions, 18000 events. 12329/18000 cut-off events. For 475614/475614 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 109806 event pairs, 1304 based on Foata normal form. 1/16935 useless extension candidates. Maximal degree in co-relation 138485. Up to 4315 conditions per place. [2023-08-24 01:17:15,400 INFO L140 encePairwiseOnDemand]: 606/621 looper letters, 455 selfloop transitions, 385 changer transitions 19/859 dead transitions. [2023-08-24 01:17:15,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 859 transitions, 18822 flow [2023-08-24 01:17:15,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 01:17:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 01:17:15,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4010 transitions. [2023-08-24 01:17:15,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3398593101110264 [2023-08-24 01:17:15,403 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4010 transitions. [2023-08-24 01:17:15,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4010 transitions. [2023-08-24 01:17:15,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:17:15,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4010 transitions. [2023-08-24 01:17:15,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 211.05263157894737) internal successors, (4010), 19 states have internal predecessors, (4010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:15,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 621.0) internal successors, (12420), 20 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:15,412 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 621.0) internal successors, (12420), 20 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:15,412 INFO L175 Difference]: Start difference. First operand has 283 places, 593 transitions, 13944 flow. Second operand 19 states and 4010 transitions. [2023-08-24 01:17:15,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 859 transitions, 18822 flow [2023-08-24 01:17:20,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 859 transitions, 18101 flow, removed 195 selfloop flow, removed 8 redundant places. [2023-08-24 01:17:20,461 INFO L231 Difference]: Finished difference. Result has 299 places, 637 transitions, 15397 flow [2023-08-24 01:17:20,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=13449, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=15397, PETRI_PLACES=299, PETRI_TRANSITIONS=637} [2023-08-24 01:17:20,462 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 261 predicate places. [2023-08-24 01:17:20,462 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 637 transitions, 15397 flow [2023-08-24 01:17:20,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:20,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:17:20,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:17:20,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-24 01:17:20,663 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,SelfDestructingSolverStorable37 [2023-08-24 01:17:20,663 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:17:20,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:17:20,663 INFO L85 PathProgramCache]: Analyzing trace with hash -914359176, now seen corresponding path program 12 times [2023-08-24 01:17:20,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:17:20,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789326393] [2023-08-24 01:17:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:17:20,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:17:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:17:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:17:20,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:17:20,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789326393] [2023-08-24 01:17:20,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789326393] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:17:20,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417792136] [2023-08-24 01:17:20,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 01:17:20,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:17:20,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:17:20,793 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:17:20,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-24 01:17:20,959 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-24 01:17:20,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:17:20,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-24 01:17:20,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:17:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:17:21,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:17:21,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417792136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:17:21,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:17:21,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 15 [2023-08-24 01:17:21,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264455407] [2023-08-24 01:17:21,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:17:21,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:17:21,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:17:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:17:21,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-08-24 01:17:21,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:17:21,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 637 transitions, 15397 flow. Second operand has 11 states, 11 states have (on average 199.0909090909091) internal successors, (2190), 11 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:21,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:17:21,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:17:21,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:17:25,642 INFO L124 PetriNetUnfolderBase]: 12276/17975 cut-off events. [2023-08-24 01:17:25,642 INFO L125 PetriNetUnfolderBase]: For 507615/507615 co-relation queries the response was YES. [2023-08-24 01:17:25,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139767 conditions, 17975 events. 12276/17975 cut-off events. For 507615/507615 co-relation queries the response was YES. Maximal size of possible extension queue 839. Compared 109795 event pairs, 1968 based on Foata normal form. 17/16918 useless extension candidates. Maximal degree in co-relation 139654. Up to 7896 conditions per place. [2023-08-24 01:17:25,825 INFO L140 encePairwiseOnDemand]: 606/621 looper letters, 420 selfloop transitions, 353 changer transitions 17/790 dead transitions. [2023-08-24 01:17:25,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 790 transitions, 18415 flow [2023-08-24 01:17:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 01:17:25,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 01:17:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3148 transitions. [2023-08-24 01:17:25,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3379495437466452 [2023-08-24 01:17:25,829 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3148 transitions. [2023-08-24 01:17:25,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3148 transitions. [2023-08-24 01:17:25,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:17:25,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3148 transitions. [2023-08-24 01:17:25,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 209.86666666666667) internal successors, (3148), 15 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:25,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:25,837 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:25,837 INFO L175 Difference]: Start difference. First operand has 299 places, 637 transitions, 15397 flow. Second operand 15 states and 3148 transitions. [2023-08-24 01:17:25,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 790 transitions, 18415 flow [2023-08-24 01:17:31,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 790 transitions, 17712 flow, removed 124 selfloop flow, removed 9 redundant places. [2023-08-24 01:17:31,869 INFO L231 Difference]: Finished difference. Result has 309 places, 641 transitions, 15632 flow [2023-08-24 01:17:31,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=14680, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=15632, PETRI_PLACES=309, PETRI_TRANSITIONS=641} [2023-08-24 01:17:31,869 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 271 predicate places. [2023-08-24 01:17:31,869 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 641 transitions, 15632 flow [2023-08-24 01:17:31,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 199.0909090909091) internal successors, (2190), 11 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:31,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:17:31,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:17:31,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-24 01:17:32,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-24 01:17:32,071 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:17:32,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:17:32,072 INFO L85 PathProgramCache]: Analyzing trace with hash 823967236, now seen corresponding path program 3 times [2023-08-24 01:17:32,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:17:32,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065306692] [2023-08-24 01:17:32,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:17:32,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:17:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:17:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:17:32,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:17:32,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065306692] [2023-08-24 01:17:32,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065306692] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:17:32,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094115149] [2023-08-24 01:17:32,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:17:32,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:17:32,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:17:32,191 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:17:32,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-24 01:17:32,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 01:17:32,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:17:32,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-24 01:17:32,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:17:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:17:32,732 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:17:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094115149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:17:32,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:17:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-08-24 01:17:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316675449] [2023-08-24 01:17:32,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:17:32,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:17:32,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:17:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:17:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-08-24 01:17:32,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:17:32,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 641 transitions, 15632 flow. Second operand has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:32,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:17:32,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:17:32,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:17:37,094 INFO L124 PetriNetUnfolderBase]: 12286/18011 cut-off events. [2023-08-24 01:17:37,094 INFO L125 PetriNetUnfolderBase]: For 527718/527718 co-relation queries the response was YES. [2023-08-24 01:17:37,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141265 conditions, 18011 events. 12286/18011 cut-off events. For 527718/527718 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 110184 event pairs, 2150 based on Foata normal form. 3/16936 useless extension candidates. Maximal degree in co-relation 141148. Up to 10333 conditions per place. [2023-08-24 01:17:37,261 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 521 selfloop transitions, 292 changer transitions 8/821 dead transitions. [2023-08-24 01:17:37,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 821 transitions, 19310 flow [2023-08-24 01:17:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 01:17:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 01:17:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3155 transitions. [2023-08-24 01:17:37,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33870101986044016 [2023-08-24 01:17:37,265 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3155 transitions. [2023-08-24 01:17:37,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3155 transitions. [2023-08-24 01:17:37,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:17:37,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3155 transitions. [2023-08-24 01:17:37,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 210.33333333333334) internal successors, (3155), 15 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:37,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:37,271 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:37,271 INFO L175 Difference]: Start difference. First operand has 309 places, 641 transitions, 15632 flow. Second operand 15 states and 3155 transitions. [2023-08-24 01:17:37,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 821 transitions, 19310 flow [2023-08-24 01:17:42,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 821 transitions, 18682 flow, removed 9 selfloop flow, removed 10 redundant places. [2023-08-24 01:17:42,905 INFO L231 Difference]: Finished difference. Result has 316 places, 653 transitions, 15924 flow [2023-08-24 01:17:42,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=15024, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=15924, PETRI_PLACES=316, PETRI_TRANSITIONS=653} [2023-08-24 01:17:42,906 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 278 predicate places. [2023-08-24 01:17:42,906 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 653 transitions, 15924 flow [2023-08-24 01:17:42,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:42,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:17:42,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:17:42,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-24 01:17:43,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-24 01:17:43,111 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:17:43,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:17:43,112 INFO L85 PathProgramCache]: Analyzing trace with hash 225306142, now seen corresponding path program 4 times [2023-08-24 01:17:43,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:17:43,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463703804] [2023-08-24 01:17:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:17:43,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:17:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:17:43,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:17:43,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:17:43,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463703804] [2023-08-24 01:17:43,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463703804] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:17:43,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6095257] [2023-08-24 01:17:43,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:17:43,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:17:43,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:17:43,269 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:17:43,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-24 01:17:43,411 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:17:43,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:17:43,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-24 01:17:43,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:17:43,762 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:17:43,763 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 93 [2023-08-24 01:17:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:17:43,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:17:43,983 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:17:43,983 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:17:45,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:17:45,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6095257] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:17:45,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:17:45,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-08-24 01:17:45,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158012872] [2023-08-24 01:17:45,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:17:45,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:17:45,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:17:45,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:17:45,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2023-08-24 01:17:45,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:17:45,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 653 transitions, 15924 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:45,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:17:45,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:17:45,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:17:51,739 INFO L124 PetriNetUnfolderBase]: 15314/22147 cut-off events. [2023-08-24 01:17:51,740 INFO L125 PetriNetUnfolderBase]: For 697473/697473 co-relation queries the response was YES. [2023-08-24 01:17:51,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182476 conditions, 22147 events. 15314/22147 cut-off events. For 697473/697473 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 136711 event pairs, 1284 based on Foata normal form. 7/20868 useless extension candidates. Maximal degree in co-relation 182357. Up to 9681 conditions per place. [2023-08-24 01:17:51,952 INFO L140 encePairwiseOnDemand]: 605/621 looper letters, 514 selfloop transitions, 447 changer transitions 32/993 dead transitions. [2023-08-24 01:17:51,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 993 transitions, 24015 flow [2023-08-24 01:17:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 01:17:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 01:17:51,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2975 transitions. [2023-08-24 01:17:51,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3421900161030596 [2023-08-24 01:17:51,955 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2975 transitions. [2023-08-24 01:17:51,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2975 transitions. [2023-08-24 01:17:51,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:17:51,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2975 transitions. [2023-08-24 01:17:51,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.5) internal successors, (2975), 14 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:51,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:51,961 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:51,961 INFO L175 Difference]: Start difference. First operand has 316 places, 653 transitions, 15924 flow. Second operand 14 states and 2975 transitions. [2023-08-24 01:17:51,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 993 transitions, 24015 flow [2023-08-24 01:17:58,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 993 transitions, 23486 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-08-24 01:17:58,863 INFO L231 Difference]: Finished difference. Result has 329 places, 787 transitions, 20746 flow [2023-08-24 01:17:58,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=15537, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=20746, PETRI_PLACES=329, PETRI_TRANSITIONS=787} [2023-08-24 01:17:58,864 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 291 predicate places. [2023-08-24 01:17:58,865 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 787 transitions, 20746 flow [2023-08-24 01:17:58,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:17:58,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:17:58,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:17:58,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-24 01:17:59,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:17:59,071 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:17:59,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:17:59,072 INFO L85 PathProgramCache]: Analyzing trace with hash -44208844, now seen corresponding path program 13 times [2023-08-24 01:17:59,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:17:59,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509122669] [2023-08-24 01:17:59,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:17:59,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:17:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:17:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:17:59,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:17:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509122669] [2023-08-24 01:17:59,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509122669] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:17:59,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773182191] [2023-08-24 01:17:59,189 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 01:17:59,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:17:59,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:17:59,191 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:17:59,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-24 01:17:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:17:59,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-24 01:17:59,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:17:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:17:59,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:17:59,799 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:17:59,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:18:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:18:00,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773182191] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:18:00,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:18:00,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-08-24 01:18:00,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369472692] [2023-08-24 01:18:00,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:18:00,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:18:00,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:18:00,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:18:00,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2023-08-24 01:18:00,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:18:00,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 787 transitions, 20746 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:00,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:18:00,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:18:00,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:18:06,938 INFO L124 PetriNetUnfolderBase]: 15193/21968 cut-off events. [2023-08-24 01:18:06,938 INFO L125 PetriNetUnfolderBase]: For 866235/866235 co-relation queries the response was YES. [2023-08-24 01:18:07,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192575 conditions, 21968 events. 15193/21968 cut-off events. For 866235/866235 co-relation queries the response was YES. Maximal size of possible extension queue 1025. Compared 134966 event pairs, 1506 based on Foata normal form. 1/20679 useless extension candidates. Maximal degree in co-relation 192450. Up to 6469 conditions per place. [2023-08-24 01:18:07,373 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 528 selfloop transitions, 448 changer transitions 37/1013 dead transitions. [2023-08-24 01:18:07,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1013 transitions, 25537 flow [2023-08-24 01:18:07,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 01:18:07,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 01:18:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3406 transitions. [2023-08-24 01:18:07,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3427938808373591 [2023-08-24 01:18:07,378 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3406 transitions. [2023-08-24 01:18:07,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3406 transitions. [2023-08-24 01:18:07,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:18:07,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3406 transitions. [2023-08-24 01:18:07,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.875) internal successors, (3406), 16 states have internal predecessors, (3406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:07,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 621.0) internal successors, (10557), 17 states have internal predecessors, (10557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:07,386 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 621.0) internal successors, (10557), 17 states have internal predecessors, (10557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:07,387 INFO L175 Difference]: Start difference. First operand has 329 places, 787 transitions, 20746 flow. Second operand 16 states and 3406 transitions. [2023-08-24 01:18:07,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1013 transitions, 25537 flow [2023-08-24 01:18:17,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 1013 transitions, 24923 flow, removed 246 selfloop flow, removed 6 redundant places. [2023-08-24 01:18:17,980 INFO L231 Difference]: Finished difference. Result has 339 places, 769 transitions, 20878 flow [2023-08-24 01:18:17,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=20360, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=20878, PETRI_PLACES=339, PETRI_TRANSITIONS=769} [2023-08-24 01:18:17,981 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 301 predicate places. [2023-08-24 01:18:17,981 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 769 transitions, 20878 flow [2023-08-24 01:18:17,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:17,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:18:17,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:18:17,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-24 01:18:18,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:18:18,187 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:18:18,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:18:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1425011862, now seen corresponding path program 5 times [2023-08-24 01:18:18,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:18:18,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200608092] [2023-08-24 01:18:18,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:18:18,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:18:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:18:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:18:18,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:18:18,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200608092] [2023-08-24 01:18:18,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200608092] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:18:18,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10169340] [2023-08-24 01:18:18,319 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 01:18:18,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:18:18,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:18:18,320 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:18:18,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-24 01:18:18,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:18:18,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:18:18,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-24 01:18:18,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:18:18,725 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:18:18,725 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 90 [2023-08-24 01:18:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:18:18,806 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:18:19,093 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:18:19,093 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:18:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:18:19,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10169340] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:18:19,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:18:19,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-08-24 01:18:19,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319843478] [2023-08-24 01:18:19,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:18:19,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:18:19,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:18:19,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:18:19,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2023-08-24 01:18:19,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:18:19,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 769 transitions, 20878 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:19,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:18:19,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:18:19,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:18:26,202 INFO L124 PetriNetUnfolderBase]: 15256/22208 cut-off events. [2023-08-24 01:18:26,202 INFO L125 PetriNetUnfolderBase]: For 795935/795935 co-relation queries the response was YES. [2023-08-24 01:18:26,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190700 conditions, 22208 events. 15256/22208 cut-off events. For 795935/795935 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 138052 event pairs, 1550 based on Foata normal form. 2/20880 useless extension candidates. Maximal degree in co-relation 190574. Up to 9125 conditions per place. [2023-08-24 01:18:26,661 INFO L140 encePairwiseOnDemand]: 605/621 looper letters, 585 selfloop transitions, 364 changer transitions 17/966 dead transitions. [2023-08-24 01:18:26,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 966 transitions, 25077 flow [2023-08-24 01:18:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 01:18:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 01:18:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3175 transitions. [2023-08-24 01:18:26,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408480944712829 [2023-08-24 01:18:26,664 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3175 transitions. [2023-08-24 01:18:26,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3175 transitions. [2023-08-24 01:18:26,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:18:26,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3175 transitions. [2023-08-24 01:18:26,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 211.66666666666666) internal successors, (3175), 15 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:26,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:26,671 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:26,671 INFO L175 Difference]: Start difference. First operand has 339 places, 769 transitions, 20878 flow. Second operand 15 states and 3175 transitions. [2023-08-24 01:18:26,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 966 transitions, 25077 flow [2023-08-24 01:18:37,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 966 transitions, 24334 flow, removed 35 selfloop flow, removed 15 redundant places. [2023-08-24 01:18:37,199 INFO L231 Difference]: Finished difference. Result has 340 places, 774 transitions, 21166 flow [2023-08-24 01:18:37,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=20167, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=356, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=21166, PETRI_PLACES=340, PETRI_TRANSITIONS=774} [2023-08-24 01:18:37,200 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 302 predicate places. [2023-08-24 01:18:37,200 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 774 transitions, 21166 flow [2023-08-24 01:18:37,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:37,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:18:37,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:18:37,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-24 01:18:37,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-24 01:18:37,401 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:18:37,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:18:37,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1026613778, now seen corresponding path program 6 times [2023-08-24 01:18:37,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:18:37,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50218939] [2023-08-24 01:18:37,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:18:37,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:18:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:18:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:18:37,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:18:37,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50218939] [2023-08-24 01:18:37,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50218939] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:18:37,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742919990] [2023-08-24 01:18:37,537 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 01:18:37,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:18:37,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:18:37,538 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:18:37,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-24 01:18:37,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-24 01:18:37,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:18:37,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-24 01:18:37,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:18:37,973 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:18:37,973 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 85 [2023-08-24 01:18:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:18:38,051 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:18:38,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742919990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:18:38,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:18:38,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 15 [2023-08-24 01:18:38,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206105829] [2023-08-24 01:18:38,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:18:38,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:18:38,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:18:38,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:18:38,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-08-24 01:18:38,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:18:38,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 774 transitions, 21166 flow. Second operand has 11 states, 11 states have (on average 199.0909090909091) internal successors, (2190), 11 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:38,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:18:38,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:18:38,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:18:44,325 INFO L124 PetriNetUnfolderBase]: 15104/22222 cut-off events. [2023-08-24 01:18:44,325 INFO L125 PetriNetUnfolderBase]: For 801339/801339 co-relation queries the response was YES. [2023-08-24 01:18:44,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184835 conditions, 22222 events. 15104/22222 cut-off events. For 801339/801339 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 141132 event pairs, 2562 based on Foata normal form. 154/21002 useless extension candidates. Maximal degree in co-relation 184709. Up to 12416 conditions per place. [2023-08-24 01:18:44,582 INFO L140 encePairwiseOnDemand]: 606/621 looper letters, 605 selfloop transitions, 399 changer transitions 8/1012 dead transitions. [2023-08-24 01:18:44,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 1012 transitions, 25868 flow [2023-08-24 01:18:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 01:18:44,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 01:18:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3811 transitions. [2023-08-24 01:18:44,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409375559134013 [2023-08-24 01:18:44,769 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3811 transitions. [2023-08-24 01:18:44,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3811 transitions. [2023-08-24 01:18:44,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:18:44,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3811 transitions. [2023-08-24 01:18:44,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 211.72222222222223) internal successors, (3811), 18 states have internal predecessors, (3811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:44,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 621.0) internal successors, (11799), 19 states have internal predecessors, (11799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:44,793 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 621.0) internal successors, (11799), 19 states have internal predecessors, (11799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:44,793 INFO L175 Difference]: Start difference. First operand has 340 places, 774 transitions, 21166 flow. Second operand 18 states and 3811 transitions. [2023-08-24 01:18:44,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 1012 transitions, 25868 flow [2023-08-24 01:18:54,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1012 transitions, 25226 flow, removed 67 selfloop flow, removed 10 redundant places. [2023-08-24 01:18:54,944 INFO L231 Difference]: Finished difference. Result has 355 places, 797 transitions, 22211 flow [2023-08-24 01:18:54,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=20132, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=22211, PETRI_PLACES=355, PETRI_TRANSITIONS=797} [2023-08-24 01:18:54,944 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 317 predicate places. [2023-08-24 01:18:54,944 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 797 transitions, 22211 flow [2023-08-24 01:18:54,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 199.0909090909091) internal successors, (2190), 11 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:54,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:18:54,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:18:54,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-24 01:18:55,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-08-24 01:18:55,146 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:18:55,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:18:55,146 INFO L85 PathProgramCache]: Analyzing trace with hash 658951710, now seen corresponding path program 7 times [2023-08-24 01:18:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:18:55,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092765844] [2023-08-24 01:18:55,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:18:55,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:18:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:18:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:18:55,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:18:55,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092765844] [2023-08-24 01:18:55,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092765844] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:18:55,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054482501] [2023-08-24 01:18:55,319 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 01:18:55,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:18:55,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:18:55,320 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:18:55,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-24 01:18:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:18:55,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-24 01:18:55,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:18:55,809 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:18:55,809 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 93 [2023-08-24 01:18:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:18:55,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:18:55,984 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:18:55,984 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:18:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:18:56,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054482501] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:18:56,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:18:56,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-08-24 01:18:56,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335793674] [2023-08-24 01:18:56,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:18:56,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:18:56,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:18:56,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:18:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2023-08-24 01:18:56,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:18:56,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 797 transitions, 22211 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:18:56,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:18:56,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:18:56,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:19:04,444 INFO L124 PetriNetUnfolderBase]: 15740/23170 cut-off events. [2023-08-24 01:19:04,444 INFO L125 PetriNetUnfolderBase]: For 913117/913117 co-relation queries the response was YES. [2023-08-24 01:19:04,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199848 conditions, 23170 events. 15740/23170 cut-off events. For 913117/913117 co-relation queries the response was YES. Maximal size of possible extension queue 1144. Compared 149160 event pairs, 1674 based on Foata normal form. 3/21751 useless extension candidates. Maximal degree in co-relation 199715. Up to 8670 conditions per place. [2023-08-24 01:19:04,730 INFO L140 encePairwiseOnDemand]: 605/621 looper letters, 496 selfloop transitions, 483 changer transitions 35/1014 dead transitions. [2023-08-24 01:19:04,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 1014 transitions, 27328 flow [2023-08-24 01:19:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 01:19:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 01:19:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3167 transitions. [2023-08-24 01:19:04,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3399892646269458 [2023-08-24 01:19:04,733 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3167 transitions. [2023-08-24 01:19:04,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3167 transitions. [2023-08-24 01:19:04,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:19:04,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3167 transitions. [2023-08-24 01:19:04,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 211.13333333333333) internal successors, (3167), 15 states have internal predecessors, (3167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:04,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:04,739 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 621.0) internal successors, (9936), 16 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:04,739 INFO L175 Difference]: Start difference. First operand has 355 places, 797 transitions, 22211 flow. Second operand 15 states and 3167 transitions. [2023-08-24 01:19:04,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 1014 transitions, 27328 flow [2023-08-24 01:19:17,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 1014 transitions, 26794 flow, removed 142 selfloop flow, removed 6 redundant places. [2023-08-24 01:19:17,683 INFO L231 Difference]: Finished difference. Result has 370 places, 825 transitions, 24179 flow [2023-08-24 01:19:17,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=21738, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=24179, PETRI_PLACES=370, PETRI_TRANSITIONS=825} [2023-08-24 01:19:17,684 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 332 predicate places. [2023-08-24 01:19:17,684 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 825 transitions, 24179 flow [2023-08-24 01:19:17,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:17,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:19:17,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:19:17,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-24 01:19:17,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:19:17,885 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:19:17,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:19:17,886 INFO L85 PathProgramCache]: Analyzing trace with hash 720515726, now seen corresponding path program 14 times [2023-08-24 01:19:17,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:19:17,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993911512] [2023-08-24 01:19:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:19:17,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:19:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:19:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:19:18,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:19:18,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993911512] [2023-08-24 01:19:18,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993911512] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:19:18,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577442646] [2023-08-24 01:19:18,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:19:18,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:19:18,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:19:18,024 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:19:18,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-24 01:19:18,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 01:19:18,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:19:18,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-24 01:19:18,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:19:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:19:18,534 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:19:18,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577442646] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:19:18,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:19:18,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 15 [2023-08-24 01:19:18,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399946779] [2023-08-24 01:19:18,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:19:18,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:19:18,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:19:18,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:19:18,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-08-24 01:19:18,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:19:18,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 825 transitions, 24179 flow. Second operand has 11 states, 11 states have (on average 199.0909090909091) internal successors, (2190), 11 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:18,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:19:18,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:19:18,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:19:25,754 INFO L124 PetriNetUnfolderBase]: 15684/23046 cut-off events. [2023-08-24 01:19:25,754 INFO L125 PetriNetUnfolderBase]: For 979391/979391 co-relation queries the response was YES. [2023-08-24 01:19:25,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204659 conditions, 23046 events. 15684/23046 cut-off events. For 979391/979391 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 147351 event pairs, 2354 based on Foata normal form. 1/21625 useless extension candidates. Maximal degree in co-relation 204518. Up to 10986 conditions per place. [2023-08-24 01:19:26,057 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 509 selfloop transitions, 452 changer transitions 14/975 dead transitions. [2023-08-24 01:19:26,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 975 transitions, 27490 flow [2023-08-24 01:19:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 01:19:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 01:19:26,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3354 transitions. [2023-08-24 01:19:26,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33756038647342995 [2023-08-24 01:19:26,060 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3354 transitions. [2023-08-24 01:19:26,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3354 transitions. [2023-08-24 01:19:26,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:19:26,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3354 transitions. [2023-08-24 01:19:26,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 209.625) internal successors, (3354), 16 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:26,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 621.0) internal successors, (10557), 17 states have internal predecessors, (10557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:26,067 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 621.0) internal successors, (10557), 17 states have internal predecessors, (10557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:26,067 INFO L175 Difference]: Start difference. First operand has 370 places, 825 transitions, 24179 flow. Second operand 16 states and 3354 transitions. [2023-08-24 01:19:26,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 975 transitions, 27490 flow [2023-08-24 01:19:39,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 975 transitions, 27084 flow, removed 52 selfloop flow, removed 8 redundant places. [2023-08-24 01:19:39,420 INFO L231 Difference]: Finished difference. Result has 375 places, 823 transitions, 24645 flow [2023-08-24 01:19:39,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=23781, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=452, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=24645, PETRI_PLACES=375, PETRI_TRANSITIONS=823} [2023-08-24 01:19:39,420 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 337 predicate places. [2023-08-24 01:19:39,421 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 823 transitions, 24645 flow [2023-08-24 01:19:39,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 199.0909090909091) internal successors, (2190), 11 states have internal predecessors, (2190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:39,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:19:39,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:19:39,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-24 01:19:39,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:19:39,622 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:19:39,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:19:39,622 INFO L85 PathProgramCache]: Analyzing trace with hash -690196790, now seen corresponding path program 15 times [2023-08-24 01:19:39,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:19:39,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733452182] [2023-08-24 01:19:39,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:19:39,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:19:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:19:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:19:39,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:19:39,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733452182] [2023-08-24 01:19:39,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733452182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:19:39,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443710389] [2023-08-24 01:19:39,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:19:39,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:19:39,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:19:39,752 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:19:39,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-24 01:19:39,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 01:19:39,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:19:39,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-24 01:19:39,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:19:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:19:40,303 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:19:40,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443710389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:19:40,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:19:40,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-08-24 01:19:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591861951] [2023-08-24 01:19:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:19:40,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:19:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:19:40,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:19:40,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-08-24 01:19:40,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:19:40,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 823 transitions, 24645 flow. Second operand has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:40,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:19:40,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:19:40,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:19:47,409 INFO L124 PetriNetUnfolderBase]: 15449/22803 cut-off events. [2023-08-24 01:19:47,409 INFO L125 PetriNetUnfolderBase]: For 988358/988358 co-relation queries the response was YES. [2023-08-24 01:19:47,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204224 conditions, 22803 events. 15449/22803 cut-off events. For 988358/988358 co-relation queries the response was YES. Maximal size of possible extension queue 1123. Compared 146911 event pairs, 2536 based on Foata normal form. 117/21498 useless extension candidates. Maximal degree in co-relation 204084. Up to 9070 conditions per place. [2023-08-24 01:19:47,867 INFO L140 encePairwiseOnDemand]: 606/621 looper letters, 432 selfloop transitions, 514 changer transitions 25/971 dead transitions. [2023-08-24 01:19:47,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 971 transitions, 28005 flow [2023-08-24 01:19:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 01:19:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 01:19:47,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3547 transitions. [2023-08-24 01:19:47,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359856019702567 [2023-08-24 01:19:47,870 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3547 transitions. [2023-08-24 01:19:47,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3547 transitions. [2023-08-24 01:19:47,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:19:47,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3547 transitions. [2023-08-24 01:19:47,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 208.64705882352942) internal successors, (3547), 17 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:47,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 621.0) internal successors, (11178), 18 states have internal predecessors, (11178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:47,880 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 621.0) internal successors, (11178), 18 states have internal predecessors, (11178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:19:47,880 INFO L175 Difference]: Start difference. First operand has 375 places, 823 transitions, 24645 flow. Second operand 17 states and 3547 transitions. [2023-08-24 01:19:47,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 971 transitions, 28005 flow [2023-08-24 01:20:00,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 971 transitions, 27003 flow, removed 60 selfloop flow, removed 15 redundant places. [2023-08-24 01:20:00,802 INFO L231 Difference]: Finished difference. Result has 382 places, 823 transitions, 24984 flow [2023-08-24 01:20:00,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=23479, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=504, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=24984, PETRI_PLACES=382, PETRI_TRANSITIONS=823} [2023-08-24 01:20:00,803 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 344 predicate places. [2023-08-24 01:20:00,803 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 823 transitions, 24984 flow [2023-08-24 01:20:00,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:20:00,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:20:00,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:20:00,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-24 01:20:01,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:20:01,004 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:20:01,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:20:01,005 INFO L85 PathProgramCache]: Analyzing trace with hash 657195142, now seen corresponding path program 16 times [2023-08-24 01:20:01,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:20:01,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292240224] [2023-08-24 01:20:01,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:20:01,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:20:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:20:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:20:01,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:20:01,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292240224] [2023-08-24 01:20:01,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292240224] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:20:01,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958683883] [2023-08-24 01:20:01,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:20:01,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:20:01,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:20:01,116 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:20:01,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-24 01:20:01,271 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:20:01,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:20:01,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-24 01:20:01,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:20:01,399 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:20:01,399 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 85 [2023-08-24 01:20:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:20:01,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:20:02,082 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:20:02,082 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:20:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:20:02,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958683883] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:20:02,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:20:02,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 8] total 21 [2023-08-24 01:20:02,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546820251] [2023-08-24 01:20:02,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:20:02,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 01:20:02,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:20:02,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 01:20:02,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2023-08-24 01:20:02,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 621 [2023-08-24 01:20:02,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 823 transitions, 24984 flow. Second operand has 8 states, 8 states have (on average 227.875) internal successors, (1823), 8 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:20:02,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:20:02,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 621 [2023-08-24 01:20:02,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:20:14,497 INFO L124 PetriNetUnfolderBase]: 26084/37857 cut-off events. [2023-08-24 01:20:14,497 INFO L125 PetriNetUnfolderBase]: For 1844815/1844815 co-relation queries the response was YES. [2023-08-24 01:20:14,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339162 conditions, 37857 events. 26084/37857 cut-off events. For 1844815/1844815 co-relation queries the response was YES. Maximal size of possible extension queue 1898. Compared 255020 event pairs, 3078 based on Foata normal form. 6/35629 useless extension candidates. Maximal degree in co-relation 339018. Up to 19407 conditions per place. [2023-08-24 01:20:15,371 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 983 selfloop transitions, 986 changer transitions 5/1974 dead transitions. [2023-08-24 01:20:15,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 1974 transitions, 60798 flow [2023-08-24 01:20:15,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 01:20:15,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 01:20:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4532 transitions. [2023-08-24 01:20:15,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38410034748707517 [2023-08-24 01:20:15,375 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4532 transitions. [2023-08-24 01:20:15,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4532 transitions. [2023-08-24 01:20:15,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:20:15,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4532 transitions. [2023-08-24 01:20:15,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 238.52631578947367) internal successors, (4532), 19 states have internal predecessors, (4532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:20:15,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 621.0) internal successors, (12420), 20 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:20:15,383 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 621.0) internal successors, (12420), 20 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:20:15,383 INFO L175 Difference]: Start difference. First operand has 382 places, 823 transitions, 24984 flow. Second operand 19 states and 4532 transitions. [2023-08-24 01:20:15,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 1974 transitions, 60798 flow [2023-08-24 01:20:42,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 1974 transitions, 58287 flow, removed 64 selfloop flow, removed 14 redundant places. [2023-08-24 01:20:42,165 INFO L231 Difference]: Finished difference. Result has 398 places, 1604 transitions, 51381 flow [2023-08-24 01:20:42,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=23916, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=51381, PETRI_PLACES=398, PETRI_TRANSITIONS=1604} [2023-08-24 01:20:42,166 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 360 predicate places. [2023-08-24 01:20:42,166 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 1604 transitions, 51381 flow [2023-08-24 01:20:42,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 227.875) internal successors, (1823), 8 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:20:42,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:20:42,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:20:42,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-24 01:20:42,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-24 01:20:42,367 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:20:42,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:20:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash -2002897252, now seen corresponding path program 17 times [2023-08-24 01:20:42,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:20:42,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190905544] [2023-08-24 01:20:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:20:42,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:20:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:20:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:20:42,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:20:42,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190905544] [2023-08-24 01:20:42,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190905544] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:20:42,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137201561] [2023-08-24 01:20:42,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 01:20:42,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:20:42,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:20:42,479 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:20:42,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-24 01:20:42,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 01:20:42,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:20:42,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-24 01:20:42,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:20:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:20:42,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:20:43,417 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:20:43,418 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:20:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:20:43,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137201561] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:20:43,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:20:43,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-08-24 01:20:43,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340416337] [2023-08-24 01:20:43,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:20:43,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:20:43,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:20:43,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:20:43,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2023-08-24 01:20:43,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:20:43,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 1604 transitions, 51381 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:20:43,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:20:43,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:20:43,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:21:00,172 INFO L124 PetriNetUnfolderBase]: 28779/42022 cut-off events. [2023-08-24 01:21:00,172 INFO L125 PetriNetUnfolderBase]: For 2000060/2000060 co-relation queries the response was YES. [2023-08-24 01:21:01,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395490 conditions, 42022 events. 28779/42022 cut-off events. For 2000060/2000060 co-relation queries the response was YES. Maximal size of possible extension queue 2032. Compared 287083 event pairs, 2722 based on Foata normal form. 4/39518 useless extension candidates. Maximal degree in co-relation 395334. Up to 8437 conditions per place. [2023-08-24 01:21:02,017 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 987 selfloop transitions, 1090 changer transitions 29/2106 dead transitions. [2023-08-24 01:21:02,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 2106 transitions, 66225 flow [2023-08-24 01:21:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 01:21:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 01:21:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4022 transitions. [2023-08-24 01:21:02,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408763454530045 [2023-08-24 01:21:02,020 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4022 transitions. [2023-08-24 01:21:02,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4022 transitions. [2023-08-24 01:21:02,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:21:02,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4022 transitions. [2023-08-24 01:21:02,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 211.68421052631578) internal successors, (4022), 19 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:21:02,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 621.0) internal successors, (12420), 20 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:21:02,032 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 621.0) internal successors, (12420), 20 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:21:02,032 INFO L175 Difference]: Start difference. First operand has 398 places, 1604 transitions, 51381 flow. Second operand 19 states and 4022 transitions. [2023-08-24 01:21:02,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 2106 transitions, 66225 flow [2023-08-24 01:21:58,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 2106 transitions, 64260 flow, removed 981 selfloop flow, removed 1 redundant places. [2023-08-24 01:21:58,403 INFO L231 Difference]: Finished difference. Result has 427 places, 1763 transitions, 59302 flow [2023-08-24 01:21:58,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=50134, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=936, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=59302, PETRI_PLACES=427, PETRI_TRANSITIONS=1763} [2023-08-24 01:21:58,404 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 389 predicate places. [2023-08-24 01:21:58,405 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 1763 transitions, 59302 flow [2023-08-24 01:21:58,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:21:58,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:21:58,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:21:58,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-24 01:21:58,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-08-24 01:21:58,609 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:21:58,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:21:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash 128381812, now seen corresponding path program 8 times [2023-08-24 01:21:58,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:21:58,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892495862] [2023-08-24 01:21:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:21:58,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:21:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:21:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:21:58,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:21:58,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892495862] [2023-08-24 01:21:58,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892495862] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:21:58,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052757961] [2023-08-24 01:21:58,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:21:58,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:21:58,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:21:58,736 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:21:58,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-24 01:21:58,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 01:21:58,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:21:58,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-24 01:21:58,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:21:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:21:59,226 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:21:59,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052757961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:21:59,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:21:59,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-08-24 01:21:59,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182522531] [2023-08-24 01:21:59,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:21:59,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:21:59,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:21:59,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:21:59,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-08-24 01:21:59,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:21:59,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 1763 transitions, 59302 flow. Second operand has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:21:59,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:21:59,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:21:59,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:22:18,644 INFO L124 PetriNetUnfolderBase]: 28740/41978 cut-off events. [2023-08-24 01:22:18,644 INFO L125 PetriNetUnfolderBase]: For 2279156/2279156 co-relation queries the response was YES. [2023-08-24 01:22:19,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413295 conditions, 41978 events. 28740/41978 cut-off events. For 2279156/2279156 co-relation queries the response was YES. Maximal size of possible extension queue 2116. Compared 287671 event pairs, 5491 based on Foata normal form. 3/39469 useless extension candidates. Maximal degree in co-relation 413126. Up to 27150 conditions per place. [2023-08-24 01:22:19,657 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 1107 selfloop transitions, 846 changer transitions 29/1982 dead transitions. [2023-08-24 01:22:19,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 1982 transitions, 66192 flow [2023-08-24 01:22:19,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 01:22:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 01:22:19,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3572 transitions. [2023-08-24 01:22:19,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3383536989675097 [2023-08-24 01:22:19,660 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3572 transitions. [2023-08-24 01:22:19,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3572 transitions. [2023-08-24 01:22:19,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:22:19,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3572 transitions. [2023-08-24 01:22:19,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 210.11764705882354) internal successors, (3572), 17 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:22:19,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 621.0) internal successors, (11178), 18 states have internal predecessors, (11178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:22:19,667 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 621.0) internal successors, (11178), 18 states have internal predecessors, (11178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:22:19,667 INFO L175 Difference]: Start difference. First operand has 427 places, 1763 transitions, 59302 flow. Second operand 17 states and 3572 transitions. [2023-08-24 01:22:19,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 1982 transitions, 66192 flow [2023-08-24 01:23:27,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1982 transitions, 64997 flow, removed 313 selfloop flow, removed 6 redundant places. [2023-08-24 01:23:27,240 INFO L231 Difference]: Finished difference. Result has 437 places, 1753 transitions, 59595 flow [2023-08-24 01:23:27,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=58220, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=844, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=917, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=59595, PETRI_PLACES=437, PETRI_TRANSITIONS=1753} [2023-08-24 01:23:27,241 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 399 predicate places. [2023-08-24 01:23:27,241 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 1753 transitions, 59595 flow [2023-08-24 01:23:27,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:23:27,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:23:27,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:23:27,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-24 01:23:27,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-08-24 01:23:27,447 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:23:27,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:23:27,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1385495374, now seen corresponding path program 18 times [2023-08-24 01:23:27,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:23:27,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277363817] [2023-08-24 01:23:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:23:27,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:23:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:23:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:23:27,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:23:27,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277363817] [2023-08-24 01:23:27,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277363817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:23:27,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140512040] [2023-08-24 01:23:27,573 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 01:23:27,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:23:27,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:23:27,574 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:23:27,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-24 01:23:27,763 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-24 01:23:27,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:23:27,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-24 01:23:27,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:23:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:23:28,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:23:28,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140512040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:23:28,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:23:28,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-08-24 01:23:28,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514725516] [2023-08-24 01:23:28,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:23:28,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:23:28,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:23:28,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:23:28,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-08-24 01:23:28,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:23:28,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1753 transitions, 59595 flow. Second operand has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:23:28,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:23:28,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:23:28,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:23:47,867 INFO L124 PetriNetUnfolderBase]: 28701/41938 cut-off events. [2023-08-24 01:23:47,867 INFO L125 PetriNetUnfolderBase]: For 2294686/2294686 co-relation queries the response was YES. [2023-08-24 01:23:48,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412256 conditions, 41938 events. 28701/41938 cut-off events. For 2294686/2294686 co-relation queries the response was YES. Maximal size of possible extension queue 2061. Compared 287149 event pairs, 4820 based on Foata normal form. 2/39428 useless extension candidates. Maximal degree in co-relation 412086. Up to 20339 conditions per place. [2023-08-24 01:23:48,810 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 830 selfloop transitions, 1071 changer transitions 11/1912 dead transitions. [2023-08-24 01:23:48,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 1912 transitions, 65372 flow [2023-08-24 01:23:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 01:23:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 01:23:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2932 transitions. [2023-08-24 01:23:48,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724407637451115 [2023-08-24 01:23:48,813 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2932 transitions. [2023-08-24 01:23:48,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2932 transitions. [2023-08-24 01:23:48,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:23:48,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2932 transitions. [2023-08-24 01:23:48,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 209.42857142857142) internal successors, (2932), 14 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:23:48,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:23:48,820 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 621.0) internal successors, (9315), 15 states have internal predecessors, (9315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:23:48,820 INFO L175 Difference]: Start difference. First operand has 437 places, 1753 transitions, 59595 flow. Second operand 14 states and 2932 transitions. [2023-08-24 01:23:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 1912 transitions, 65372 flow [2023-08-24 01:24:46,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1912 transitions, 63807 flow, removed 37 selfloop flow, removed 10 redundant places. [2023-08-24 01:24:46,524 INFO L231 Difference]: Finished difference. Result has 444 places, 1778 transitions, 61198 flow [2023-08-24 01:24:46,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=58047, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=61198, PETRI_PLACES=444, PETRI_TRANSITIONS=1778} [2023-08-24 01:24:46,526 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 406 predicate places. [2023-08-24 01:24:46,526 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 1778 transitions, 61198 flow [2023-08-24 01:24:46,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:24:46,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:24:46,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:24:46,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-24 01:24:46,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-08-24 01:24:46,735 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:24:46,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:24:46,735 INFO L85 PathProgramCache]: Analyzing trace with hash 965410858, now seen corresponding path program 9 times [2023-08-24 01:24:46,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:24:46,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197470284] [2023-08-24 01:24:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:24:46,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:24:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:24:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:24:46,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:24:46,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197470284] [2023-08-24 01:24:46,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197470284] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:24:46,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341425156] [2023-08-24 01:24:46,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:24:46,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:24:46,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:24:46,850 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:24:46,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-24 01:24:47,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 01:24:47,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:24:47,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-24 01:24:47,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:24:47,289 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:24:47,289 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 85 [2023-08-24 01:24:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:24:47,418 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:24:47,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341425156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:24:47,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:24:47,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 16 [2023-08-24 01:24:47,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021859825] [2023-08-24 01:24:47,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:24:47,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:24:47,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:24:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:24:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-08-24 01:24:47,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:24:47,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1778 transitions, 61198 flow. Second operand has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:24:47,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:24:47,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:24:47,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:25:07,394 INFO L124 PetriNetUnfolderBase]: 28861/42230 cut-off events. [2023-08-24 01:25:07,394 INFO L125 PetriNetUnfolderBase]: For 2293917/2293917 co-relation queries the response was YES. [2023-08-24 01:25:08,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415734 conditions, 42230 events. 28861/42230 cut-off events. For 2293917/2293917 co-relation queries the response was YES. Maximal size of possible extension queue 2136. Compared 290831 event pairs, 5468 based on Foata normal form. 6/39704 useless extension candidates. Maximal degree in co-relation 415560. Up to 26174 conditions per place. [2023-08-24 01:25:08,300 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 1110 selfloop transitions, 884 changer transitions 20/2014 dead transitions. [2023-08-24 01:25:08,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 2014 transitions, 68460 flow [2023-08-24 01:25:08,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 01:25:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 01:25:08,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3574 transitions. [2023-08-24 01:25:08,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33854314672728997 [2023-08-24 01:25:08,304 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3574 transitions. [2023-08-24 01:25:08,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3574 transitions. [2023-08-24 01:25:08,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:25:08,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3574 transitions. [2023-08-24 01:25:08,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 210.23529411764707) internal successors, (3574), 17 states have internal predecessors, (3574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:25:08,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 621.0) internal successors, (11178), 18 states have internal predecessors, (11178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:25:08,311 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 621.0) internal successors, (11178), 18 states have internal predecessors, (11178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:25:08,311 INFO L175 Difference]: Start difference. First operand has 444 places, 1778 transitions, 61198 flow. Second operand 17 states and 3574 transitions. [2023-08-24 01:25:08,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 2014 transitions, 68460 flow [2023-08-24 01:26:06,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 2014 transitions, 67054 flow, removed 28 selfloop flow, removed 7 redundant places. [2023-08-24 01:26:06,623 INFO L231 Difference]: Finished difference. Result has 455 places, 1788 transitions, 62002 flow [2023-08-24 01:26:06,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=59814, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=872, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=894, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=62002, PETRI_PLACES=455, PETRI_TRANSITIONS=1788} [2023-08-24 01:26:06,624 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 417 predicate places. [2023-08-24 01:26:06,624 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 1788 transitions, 62002 flow [2023-08-24 01:26:06,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.91666666666666) internal successors, (2387), 12 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:26:06,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:26:06,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:26:06,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-24 01:26:06,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:26:06,826 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:26:06,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:26:06,826 INFO L85 PathProgramCache]: Analyzing trace with hash -230545536, now seen corresponding path program 19 times [2023-08-24 01:26:06,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:26:06,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391043580] [2023-08-24 01:26:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:26:06,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:26:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:26:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:26:06,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:26:06,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391043580] [2023-08-24 01:26:06,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391043580] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:26:06,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670508770] [2023-08-24 01:26:06,940 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 01:26:06,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:26:06,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:26:06,942 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:26:06,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-24 01:26:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:26:07,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-24 01:26:07,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:26:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:26:07,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:26:07,848 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:26:07,848 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:26:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:26:08,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670508770] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:26:08,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:26:08,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 10] total 25 [2023-08-24 01:26:08,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791383104] [2023-08-24 01:26:08,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:26:08,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:26:08,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:26:08,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:26:08,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2023-08-24 01:26:08,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:26:08,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 1788 transitions, 62002 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:26:08,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:26:08,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:26:08,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:26:29,065 INFO L124 PetriNetUnfolderBase]: 29195/42818 cut-off events. [2023-08-24 01:26:29,066 INFO L125 PetriNetUnfolderBase]: For 2314125/2314125 co-relation queries the response was YES. [2023-08-24 01:26:30,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417702 conditions, 42818 events. 29195/42818 cut-off events. For 2314125/2314125 co-relation queries the response was YES. Maximal size of possible extension queue 2129. Compared 296463 event pairs, 3292 based on Foata normal form. 2/40236 useless extension candidates. Maximal degree in co-relation 417527. Up to 15181 conditions per place. [2023-08-24 01:26:30,239 INFO L140 encePairwiseOnDemand]: 607/621 looper letters, 969 selfloop transitions, 1113 changer transitions 22/2104 dead transitions. [2023-08-24 01:26:30,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 2104 transitions, 70900 flow [2023-08-24 01:26:30,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 01:26:30,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 01:26:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4023 transitions. [2023-08-24 01:26:30,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34096109839816935 [2023-08-24 01:26:30,242 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4023 transitions. [2023-08-24 01:26:30,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4023 transitions. [2023-08-24 01:26:30,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:26:30,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4023 transitions. [2023-08-24 01:26:30,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 211.73684210526315) internal successors, (4023), 19 states have internal predecessors, (4023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:26:30,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 621.0) internal successors, (12420), 20 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:26:30,249 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 621.0) internal successors, (12420), 20 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:26:30,249 INFO L175 Difference]: Start difference. First operand has 455 places, 1788 transitions, 62002 flow. Second operand 19 states and 4023 transitions. [2023-08-24 01:26:30,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 2104 transitions, 70900 flow [2023-08-24 01:27:34,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 2104 transitions, 69551 flow, removed 15 selfloop flow, removed 10 redundant places. [2023-08-24 01:27:34,508 INFO L231 Difference]: Finished difference. Result has 468 places, 1830 transitions, 64843 flow [2023-08-24 01:27:34,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=621, PETRI_DIFFERENCE_MINUEND_FLOW=60663, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1070, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=64843, PETRI_PLACES=468, PETRI_TRANSITIONS=1830} [2023-08-24 01:27:34,510 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 430 predicate places. [2023-08-24 01:27:34,510 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1830 transitions, 64843 flow [2023-08-24 01:27:34,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:27:34,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:27:34,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:27:34,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-24 01:27:34,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-08-24 01:27:34,716 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:27:34,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:27:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash -97593542, now seen corresponding path program 10 times [2023-08-24 01:27:34,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:27:34,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993840001] [2023-08-24 01:27:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:27:34,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:27:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:27:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:27:34,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:27:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993840001] [2023-08-24 01:27:34,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993840001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:27:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191909803] [2023-08-24 01:27:34,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:27:34,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:27:34,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:27:34,867 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 01:27:34,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-24 01:27:35,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:27:35,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:27:35,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-24 01:27:35,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:27:35,378 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:27:35,378 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 93 [2023-08-24 01:27:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:27:35,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:27:35,549 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:27:35,550 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 122 [2023-08-24 01:27:36,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:27:36,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191909803] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 01:27:36,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 01:27:36,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 11] total 26 [2023-08-24 01:27:36,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442744848] [2023-08-24 01:27:36,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:27:36,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 01:27:36,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:27:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 01:27:36,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2023-08-24 01:27:36,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 621 [2023-08-24 01:27:36,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1830 transitions, 64843 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:27:36,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:27:36,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 621 [2023-08-24 01:27:36,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-24 01:27:59,803 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 01:27:59,804 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 01:28:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 01:28:00,702 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 01:28:00,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-08-24 01:28:00,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-24 01:28:00,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:28:00,902 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (10states, 197/621 universal loopers) in iteration 54,while PetriNetUnfolder was constructing finite prefix that currently has 444690 conditions, 44572 events (30484/44571 cut-off events. For 2503796/2503796 co-relation queries the response was YES. Maximal size of possible extension queue 2165. Compared 308617 event pairs, 2924 based on Foata normal form. 6/41929 useless extension candidates. Maximal degree in co-relation 444510. Up to 22413 conditions per place.). [2023-08-24 01:28:00,904 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 01:28:00,904 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 01:28:00,904 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 01:28:00,904 INFO L445 BasicCegarLoop]: Path program histogram: [19, 10, 7, 6, 5, 5, 1, 1] [2023-08-24 01:28:00,907 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 01:28:00,907 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 01:28:00,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:28:00 BasicIcfg [2023-08-24 01:28:00,909 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 01:28:00,909 INFO L158 Benchmark]: Toolchain (without parser) took 786944.32ms. Allocated memory was 356.5MB in the beginning and 14.0GB in the end (delta: 13.7GB). Free memory was 332.7MB in the beginning and 8.3GB in the end (delta: -8.0GB). Peak memory consumption was 7.7GB. Max. memory is 16.0GB. [2023-08-24 01:28:00,909 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory was 333.0MB in the beginning and 332.8MB in the end (delta: 145.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:28:00,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.80ms. Allocated memory is still 356.5MB. Free memory was 332.7MB in the beginning and 320.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 01:28:00,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.76ms. Allocated memory is still 356.5MB. Free memory was 320.5MB in the beginning and 318.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 01:28:00,909 INFO L158 Benchmark]: Boogie Preprocessor took 56.63ms. Allocated memory is still 356.5MB. Free memory was 318.3MB in the beginning and 316.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 01:28:00,909 INFO L158 Benchmark]: RCFGBuilder took 555.14ms. Allocated memory is still 356.5MB. Free memory was 316.3MB in the beginning and 292.2MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-24 01:28:00,910 INFO L158 Benchmark]: TraceAbstraction took 786064.41ms. Allocated memory was 356.5MB in the beginning and 14.0GB in the end (delta: 13.7GB). Free memory was 291.5MB in the beginning and 8.3GB in the end (delta: -8.0GB). Peak memory consumption was 7.7GB. Max. memory is 16.0GB. [2023-08-24 01:28:00,910 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory was 333.0MB in the beginning and 332.8MB in the end (delta: 145.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 212.80ms. Allocated memory is still 356.5MB. Free memory was 332.7MB in the beginning and 320.5MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.76ms. Allocated memory is still 356.5MB. Free memory was 320.5MB in the beginning and 318.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 56.63ms. Allocated memory is still 356.5MB. Free memory was 318.3MB in the beginning and 316.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 555.14ms. Allocated memory is still 356.5MB. Free memory was 316.3MB in the beginning and 292.2MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 786064.41ms. Allocated memory was 356.5MB in the beginning and 14.0GB in the end (delta: 13.7GB). Free memory was 291.5MB in the beginning and 8.3GB in the end (delta: -8.0GB). Peak memory consumption was 7.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.8s, 271 PlacesBefore, 38 PlacesAfterwards, 290 TransitionsBefore, 39 TransitionsAfterwards, 7998 CoEnabledTransitionPairs, 8 FixpointIterations, 156 TrivialSequentialCompositions, 75 ConcurrentSequentialCompositions, 38 TrivialYvCompositions, 31 ConcurrentYvCompositions, 18 ChoiceCompositions, 318 TotalNumberOfCompositions, 10353 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8565, independent: 8418, independent conditional: 0, independent unconditional: 8418, dependent: 147, dependent conditional: 0, dependent unconditional: 147, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4747, independent: 4711, independent conditional: 0, independent unconditional: 4711, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8565, independent: 3707, independent conditional: 0, independent unconditional: 3707, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 4747, unknown conditional: 0, unknown unconditional: 4747] , Statistics on independence cache: Total cache size (in pairs): 176, Positive cache size: 165, Positive conditional cache size: 0, Positive unconditional cache size: 165, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (10states, 197/621 universal loopers) in iteration 54,while PetriNetUnfolder was constructing finite prefix that currently has 444690 conditions, 44572 events (30484/44571 cut-off events. For 2503796/2503796 co-relation queries the response was YES. Maximal size of possible extension queue 2165. Compared 308617 event pairs, 2924 based on Foata normal form. 6/41929 useless extension candidates. Maximal degree in co-relation 444510. Up to 22413 conditions per place.). - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (10states, 197/621 universal loopers) in iteration 54,while PetriNetUnfolder was constructing finite prefix that currently has 444690 conditions, 44572 events (30484/44571 cut-off events. For 2503796/2503796 co-relation queries the response was YES. Maximal size of possible extension queue 2165. Compared 308617 event pairs, 2924 based on Foata normal form. 6/41929 useless extension candidates. Maximal degree in co-relation 444510. Up to 22413 conditions per place.). - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (10states, 197/621 universal loopers) in iteration 54,while PetriNetUnfolder was constructing finite prefix that currently has 444690 conditions, 44572 events (30484/44571 cut-off events. For 2503796/2503796 co-relation queries the response was YES. Maximal size of possible extension queue 2165. Compared 308617 event pairs, 2924 based on Foata normal form. 6/41929 useless extension candidates. Maximal degree in co-relation 444510. Up to 22413 conditions per place.). - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (10states, 197/621 universal loopers) in iteration 54,while PetriNetUnfolder was constructing finite prefix that currently has 444690 conditions, 44572 events (30484/44571 cut-off events. For 2503796/2503796 co-relation queries the response was YES. Maximal size of possible extension queue 2165. Compared 308617 event pairs, 2924 based on Foata normal form. 6/41929 useless extension candidates. Maximal degree in co-relation 444510. Up to 22413 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 359 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: 785.9s, OverallIterations: 54, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 715.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7782 SdHoareTripleChecker+Valid, 16.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7782 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 13.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 374 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24281 IncrementalHoareTripleChecker+Invalid, 24655 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 374 mSolverCounterUnsat, 0 mSDtfsCounter, 24281 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1899 GetRequests, 777 SyntacticMatches, 4 SemanticMatches, 1118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7992 ImplicationChecksByTransitivity, 34.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64843occurred in iteration=53, InterpolantAutomatonStates: 603, 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: 0.7s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 46.3s InterpolantComputationTime, 2027 NumberOfCodeBlocks, 2010 NumberOfCodeBlocksAsserted, 101 NumberOfCheckSat, 2355 ConstructedInterpolants, 0 QuantifiedInterpolants, 40151 SizeOfPredicates, 966 NumberOfNonLiveVariables, 10071 ConjunctsInSsa, 1381 ConjunctsInUnsatCore, 109 InterpolantComputations, 54 PerfectInterpolantSequences, 36/91 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